KR20080041581A - Image processing apparatus, image processing method, electro-optical device and electronic device - Google Patents

Abstract

An image processing apparatus, an image processing method, an electro-optical device, and an electronic device are provided to prevent the lowering of brightness in the entire image, and to inhibit the blurring of moving pictures without a complicate image process. The first frame image obtaining member(11) obtains plural first frame images for constructing the moving pictures. The second frame image insertion member(21) produces the second frame image including the white image and inserts the second frame image between the obtained first frame images. A frame image outputting member(31) outputs the plural first frame image with the inserted second frame images. The second frame image inserting member includes a double frame image producing member(22) for producing the double frame images continuously and sequentially from the first frame image. A white image pattern generating member(24) produces the white image pattern including the white image in order to change the double frame image into the second frame image. The second frame image conversion member(25) converts the double frame image into the second frame image on the basis of the white image pattern.

Description

Image processing apparatus, image processing method, electro-optical device and electronic device {IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, ELECTRO-OPTICAL DEVICE AND ELECTRONIC DEVICE}

The present invention relates to an image processing apparatus, an image processing method, an electro-optical device, and an electronic device.

In electro-optical devices such as liquid crystal devices that display in hold mode, human visual afterimages are remarkably seen when displaying moving images, compared to display devices that display in impulse mode such as CRT (Cathode Ray Tube). There is a case in which moving image blurring in which the edge of the moving object image in the display image is blurred appears. For example, Patent Documents 1, 2 and Non-Patent Document 1 below disclose examples of techniques for suppressing such moving picture blurring.

In Patent Literature 1, the light emission time between frames is controlled by controlling the light emission luminance to suppress moving image blurring. In addition, in Non-Patent Document 1, an impulse mode is pseudo-realized without lowering the brightness by displaying the original image for one screen as two images, one of a brighter image and a darker image than the original image. Moreover, in patent document 2, a part of an image is covered with a black belt and the position of this belt is moved from top to bottom. At this time, it is part of the image that is covered by the belt, but when one frame is integrated for a period, a period in which the image does not go out in one frame is created, and black image is inserted into the entire image (hereinafter referred to as black insertion). ) Is getting the same effect.

[Patent Document 1] Japanese Patent Application Laid-Open No. 4-302289

[Patent Document 2] Japanese Patent Application Laid-Open No. 2005-10579

[Non-Patent Document 1] Hitachi Display News Release April 10, 2006 "Development of new technology" Flexible BI "for moving picture in IPS liquid crystal panel for digital television" (https://www.hitachi.co.jp/ New / cnews / month / 2006/04 / 0410a.html)

However, in the technique described in Patent Document 1, the entire image becomes dark by limiting the light emission time between frames. In addition, in the technique described in Non-Patent Document 1, it is possible to reduce the darkening of the entire image, but the image processing becomes complicated, such as generating an image in which the highlight portion is inverted in real time. In addition, in the technique described in the patent document 2 described above, similar to the technique described in the non-patent document 1, the entire darkening of the image can be reduced, but the brightness as in the case of not inserting black cannot be made. .

9 is a diagram illustrating a conventional example in which black is inserted between frame images constituting a moving image. In FIG. 9, the image f1 and the image f3 represent a frame image f1 and a frame image f3 constituting a moving image, and the image f2 and the image f4 represent a frame image f2 and a frame image f4 inserted in black. As shown in FIG. 9, moving picture blurring of the frame image f1 and the frame image f3 can be suppressed by black inserting the frame image f2 in connection with the frame image f1 and the frame image f4 in connection with the frame image f3. However, since the frame image f2 and the frame image f4 are black images, when displaying the frame images f1 to f4 as images, the whole image becomes darker than the original image.

According to one of the effects of the present invention, moving image blurring can be suppressed without lowering the brightness of the entire image. In addition, moving image blurring can be suppressed without requiring complicated image processing.

As described above, in the image processing method by black insertion between the frame images constituting the moving image shown in FIG. 9, the image is darker than the original image. The inventor of this invention performed the experiment to improve this point, and obtained the following knowledge.

In other words, the effect of conventional black insertion = "providing a period during which light is not emitted and suppressing moving image blurring by erasing the memory of time" is also obtained by providing a period in which the screen is full white. It confirmed by experiment.

An image processing apparatus according to the present invention generates a first frame image acquisition unit for acquiring a plurality of first frame images constituting a moving image, and a second frame image including a white image representing a white image, and the plurality of acquired images And a second frame image insertion section for inserting the second frame image between each of the first frame images, and a frame image output section for outputting the plurality of first frame images in which the second frame image is inserted. It features.

According to the image processing apparatus according to the present invention, the first frame image acquisition unit acquires a plurality of first frame images constituting a moving image, and the second frame image insertion unit generates a second frame image including a back image, A second frame image including this back image is inserted between each of the first frame images. And the frame image output part outputs the 1st frame image which inserted the 2nd frame image. As a result, when displaying the frame image output from the frame image output unit as an image, a second frame image including a back image exists between each of the first frame images, whereby one frame of the image is displayed. By providing this period of time that does not go out, moving image blurring can be suppressed. In addition, since the inserted second frame image is a back image, moving picture blurring can be suppressed without lowering the brightness of the entire image. In addition, this image processing can be easily realized without requiring complicated image processing or the like.

In the image processing apparatus according to the present invention described above, the second frame image insertion unit includes a double speed frame image generation unit that generates a double speed frame image continuous in time series from each of the obtained plurality of first frame images, and the double speed. A back image pattern generation unit for generating a back image pattern including the back image for converting a frame image into the second frame image, and converting the double speed frame image to the second frame image based on the back image pattern And a second frame image conversion unit.

In the image processing apparatus according to the present invention described above, the second frame image conversion unit sets the back image to the entire image of the double speed frame image based on the back image pattern, thereby converting the double speed frame image to the second. The image is converted into a frame image.

In the image processing apparatus according to the present invention described above, the double-speed frame image generation unit has n frames (n is an integer of 2 or more) that have the same image as the first frame image consecutively in time series from one of the first frame images. Generating the double speed frame image, and the second frame image converting unit divides each of the double speed frame image of the n frame into n partial images, for the n partial images for each of the double speed frame image It is characterized by converting each of the double-speed frame images to the second frame image by setting the back image to one partial image at a different division position among the double-speed frame images.

In the image processing apparatus according to the present invention described above, the second frame image inserting unit further includes a brightness detecting unit detecting a level of the brightness of the acquired first frame image, and the back image pattern generating unit includes the detected brightness. The luminance value of the white image included in the white image pattern is increased when the level of the image is high, and the luminance value of the white image is lowered when the level of the detected brightness is low. A brightness value of an image is set.

In the image processing apparatus according to the present invention, the back image pattern generation unit increases the luminance value of the back image when the detected brightness level exceeds a predetermined threshold value, and the detected brightness level is set to the above-mentioned. The luminance value of the back image is set by comparing the detected brightness level with the threshold value so as to lower the luminance value of the back image when the threshold value is not exceeded.

An image processing method according to the present invention comprises a first frame image acquisition step of acquiring a plurality of first frame images constituting a moving image, and a second frame image including a white image representing a white image, and generating the plurality of first frame images. A second frame image insertion step of inserting the second frame image between each of the first frame images, and a frame image output step of outputting the plurality of first frame images into which the second frame image is inserted. Characterized in that.

An electro-optical device according to the present invention is characterized in that it is an electro-optical device provided with any one of the image processing devices described above.

The electronic device according to the present invention is characterized in that the electronic device is provided with any one of the image processing apparatuses described above.

According to the present invention, it is possible to provide an image processing apparatus capable of suppressing moving image blurring without lowering the brightness of the entire image.

(Example 1)

EMBODIMENT OF THE INVENTION Hereinafter, the image processing apparatus which concerns on Embodiment 1 of this invention is demonstrated with reference to drawings.

(Schematic Configuration of Image Processing Apparatus)

First, a schematic configuration of an image processing apparatus according to Embodiment 1 of the present invention will be described. 1 is a block diagram showing an example of a schematic configuration of an image processing apparatus according to a first embodiment of the present invention. As shown in FIG. 1, the image processing apparatus 1 includes a first frame image acquisition unit 11, a second frame image insertion unit 21, and a frame image output unit 31. In addition, the second frame image insertion unit 21 includes a double speed frame image generation unit 22, a brightness detection unit 23, a back image pattern generation unit 24, and a second frame image conversion unit 25. .

The first frame image acquisition unit 11 receives a moving picture composed of a predetermined number of pixels and predetermined pixel values such as an RGB format from an external device such as a DVD player, a video deck, a personal computer, and the like as a digital video signal. A plurality of first frame images constituting the moving image are acquired. Here, one first frame image represents a still image corresponding to one coma of a moving image.

The second frame image insertion section 21 generates a second frame image in which the entire image is a white image (hereinafter, abbreviated as a white image) or a part of the image is a white image, and the plurality of acquired images The generated second frame image is inserted between each one frame image.

The frame image output unit 31 outputs the frame image in which the second frame image is inserted between each of the obtained plurality of first frame images as a digital video signal to a display device or the like.

Next, the double speed frame image generation unit 22 included in the second frame image insertion unit 21 continuously n sheets in time series for each of the obtained plurality of first frame images (n is an integer of 1 or more). Create a double speed frame image. As a result, one first frame image becomes (n + 1) times the number of frame images, thereby increasing the speed (n + 1). For example, by connecting one first frame image, one double frame image is generated to be a total of two frames (doubled), or two double frame images are generated to generate three (3x) It is assumed to be a frame image.

The brightness detector 23 detects each brightness level with respect to the obtained plurality of first frame images. In the detection of the brightness level, first, calculation of the following equation is performed on all pixels included in one first frame image to calculate a brightness signal from each pixel. The average value of the calculated brightness signals is taken as the brightness level of the first frame image. Brightness Signal = 0.3 × R + 0.6 × G + 0.1 × B

In addition, the method of detecting a brightness level is not limited to the above-mentioned method, You may detect a brightness level using another method.

The back image pattern generation unit 24 generates a back image pattern used when converting the double speed frame image generated by the double speed frame image generation unit 22 to a second frame image. In this back image pattern, a back image overwriting the double speed frame image is set. The brightness value of this back image is set in accordance with the brightness level of the first frame image detected by the brightness detector 23.

The second frame image conversion unit 25 converts the double speed frame image into a second frame image based on the back image pattern generated by the back image pattern generation unit 24. Specifically, the double speed frame image is converted into a second frame image by overwriting the back image set in the back image pattern with respect to the double speed frame image.

Here, although not shown, the image processing apparatus 1 includes a storage medium in which programs for controlling the above-described parts are stored, a CPU for executing these programs, and a RAM for storing data necessary for executing the programs. Equipped. Then, by executing the program by the CPU, the processes of the respective sections are realized. In addition, the storage medium is a semiconductor storage medium such as RAM or ROM, magnetic storage type storage medium such as FD or HD, optical reading system storage medium such as CD, CDV, LD, DVD, magnetic storage type / optical reading such as MO As a type of storage medium, any storage medium can be included as long as it is a computer-readable storage medium irrespective of an electronic, magnetic or optical reading method. In addition, each of the above-described parts functions only with a dedicated program, controls a hardware by a dedicated program, and performs the functions. In addition, you may comprise the function of each part by only dedicated hardware.

(Operation of the image processing device)

Next, the operation of the image processing apparatus according to the first embodiment of the present invention will be described. 2 is a flowchart showing the operation of the image processing apparatus according to the first embodiment of the present invention.

First, in step S110, the first frame image acquisition unit 11 receives a moving image input as a digital video signal from an external device, and sequentially processes the plurality of first frame images constituting the moving image by one frame in time series. Acquired by In subsequent steps S120 to S160, processing is performed one by one on the acquired first frame image.

In step S120, the double speed frame image generation unit 22 generates n double speed frame images for the first frame image acquired in step S110 by connecting to the first frame image.

In step S130, the back image pattern generation unit 24 generates a back image pattern used when converting each of the n double speed frame images generated in step S120 into a second frame image. Here, a back image pattern is generated which overwrites the entire double speed frame image. In addition, the detail of the operation | movement which produces | generates a back image pattern is mentioned later.

In step S140, the second frame image conversion unit 25 converts the n double speed frame images into n second frame images based on the back image pattern generated in step S130. Here, each of the double speed frame images is converted into a second frame image by overwriting the back image set in the back image pattern with respect to each of the double speed frame images.

In step S150, the acquired first frame image and the n second frame images converted in step S140 subsequent to the time series are output as a digital video signal to a display device or the like. The frame image output in this way constitutes a frame image in which a back image is inserted between each of the obtained plurality of first frame images.

In step S160, it is determined whether the acquired first frame image is the last frame. In the case of the last frame, the operation of the image processing apparatus 1 ends. On the other hand, if it is not the last frame, the process returns to step S110 to acquire a first frame image corresponding to the next coma of the moving image.

(Operation to generate a white image pattern)

Next, the details of the operation for generating the back image pattern will be described.

3 is a flowchart showing an operation of generating a back image pattern.

First, in step S210, the brightness detector 23 detects the brightness levels by calculating brightness signals from all the pixels included in the acquired first frame image and calculating their average values.

In step S220, the brightness level detected in step S210 is compared with a predetermined threshold value to determine whether the first frame image is bright or dark. When the brightness level exceeds a predetermined threshold, that is, when it is determined that the first frame image is bright, the flow advances to step S230 to increase the luminance value of the back image set in the back image pattern. As a result, the back image is set to a normal bag (a bag having a high luminance value).

On the other hand, when the brightness level exceeds a predetermined threshold, that is, when it is determined that the first frame image is dark, the flow advances to step S240 to slightly lower the luminance value of the white image set to the back image pattern. Accordingly, the white image is set to gray (white with a slightly lower luminance value).

In the above, the operation | movement which produces | generates a back image pattern is complete | finished, and it returns to the process of the flowchart shown in FIG.

In addition, the 1st frame image acquisition process of this invention is corresponded to the said step S110. In addition, the 2nd frame image insertion process of this invention is corresponded to the said steps S120-S140. In addition, the frame image output process of this invention is corresponded to the said step S150.

(Example of frame image after conversion)

Next, an example of the frame image converted based on the back image pattern will be described. 4 is a diagram illustrating an example of a frame image converted on the basis of a back image pattern, (a) is a diagram illustrating a back image pattern, and (b) is an agent inserted between the first frame images. It is a figure which shows a two-frame image. The white image pattern p1 shown in (a) is produced | generated in step S130 shown in FIG. 2, and the normal back is set to the whole image.

The image f1 shown in FIG. 4B is the first frame image f1 obtained in the i-th step in step S110, and the image f3 is the first frame image f3 obtained in the (i + 1) th image. In addition, the image f2 shown in FIG. 4 (b) is converted by overwriting the entire back image pattern p1 shown in FIG. 4 (a) in step S140 with respect to one double speed frame image generated in step S120. It is one 2nd frame image f2, and the image of f4 is the 2nd frame image f4 similarly converted. 4 (b) and subsequent figures, the horizontal axis t indicates the passage of time from left to right toward the drawing, and indicates that each frame image is continuous in time series.

As shown in Fig. 4B, the moving image received from the external device is converted into a group of frame images in which a back image is inserted between the first frame images constituting the moving image.

5 is a diagram showing an example of a frame image converted on the basis of a back image pattern having different luminance values, and FIG. 5A shows two back image patterns having different luminance values. b) is a figure which shows the 2nd frame image inserted between the 1st frame images. In the two back image patterns shown in Fig. 5A, the back image pattern p1 in which the normal white (the white with a high luminance value) is set and gray (the white with a slightly lower luminance value) are set to the whole image. There is a set white image pattern p2.

In addition, the images of f1, f3, and f5 shown in Fig. 5B are first frame images f1, f3, f5 obtained in the i-th, (i + 1) -th, and (i + 2) -th, respectively. In addition, the image of f2 and f6 shown to FIG. 5 (b) is the 2nd frame image converted by overwriting the whole back image pattern p1 (white) shown to FIG. 5 (a) with respect to a double speed frame image, respectively. f2 and f6. On the other hand, the image f4 shown in Fig. 5B is the second frame image f4 converted by overwriting the entire back image pattern p2 (gray).

In the example shown in FIG. 5, in step S210 shown in FIG. 3, the brightness levels of the first frame images f1, f3 and f5 shown in FIG. 5 (b) are detected, and in step S220 whether each image is bright or dark. Determine. As a result, since it was determined that the first frame images f1 and f5 shown in FIG. 5B are bright, normal bags are set in the second frame images f2 and f6. On the other hand, since it was determined that the first frame image f3 shown in Fig. 5B is dark, gray is set in the second frame image f4.

As a result, as shown in Fig. 5B, the moving image received from the external device is either a normal white or an image according to the brightness of each first frame image between each first frame image constituting the moving image. The image is converted to a frame image group into which gray images are inserted.

In the example of FIGS. 4B and 5B, one double speed frame image is generated from one first frame image in step S120. However, the number of double-speed frame images generated from one first frame image is not limited to one. For example, two or three double speed frame images may be generated from one first frame image, and the back image pattern may be overwritten and converted into a second frame image for each double speed frame image.

(effect)

As described above, in the image processing apparatus 1 of the present embodiment, as shown in the example of Fig. 4B, the moving image received from the external device is placed between each first frame image constituting the moving image. The image is converted into a frame image group into which the back image is inserted.

In the conventional example shown in FIG. 9, moving picture blurring of the frame images f1 and f3 can be suppressed by black inserting the frame image f2 in connection with the frame image f1 and the frame image f3 in black. However, since the frame images f2 and f4 are black images, when displaying the frame images f1 to f4 as images, the entire image becomes darker than the original image.

On the other hand, in the example shown in Fig. 4B in the present embodiment, the frame image f2 connected to the frame image f1 to be a back image and the frame image f4 connected to the frame image f3 to be a back image are inserted. Therefore, the moving picture blurring of the frame images f1 and f3 can be suppressed. In addition, since the frame images f2 and f4 are back images, when displaying the frame images f1 to f4 as images, the whole image does not become darker than the original image. That is, the blurring of moving images can be suppressed without lowering the brightness of the entire image.

Moreover, in the conventional example shown in FIG. 9, in order to adjust the suppression effect of a moving image blurring, the number of the frame image inserted black may be increased between the frame images which comprise a moving image. In this case, when displaying as an image, since the black image increases, there is a problem that the entire image becomes darker.

On the other hand, in the example shown in Fig. 4 (b) in the present embodiment, the number of frame images to be the back images to be inserted between the frame images constituting the moving image can be increased. In this case, when displaying as an image, since the white image increases, the whole image does not become dark. In other words, the effect of suppressing moving picture blurring can be adjusted without lowering the brightness of the entire image.

In addition, in the image processing apparatus 1 of the present embodiment, as shown in the example of FIG. 5 (b), the moving image received from the external device is made between each first frame image constituting the moving image. According to the brightness of one frame image, it is converted into a frame image group into which a normal white or gray image is inserted.

When a dark image is continued in a moving image scene, if a back image having a high luminance value is inserted between the first frame images to be the image scene, there is a fear that the contrast of the entire image of the image scene is reduced. For this reason, in the example shown in FIG. 5 (b), according to the brightness level of the first frame image, gray is set as the image to be inserted if the image is a normal white if the image is bright and vice versa. If the first frame image is a dark image, by inserting a gray image, moving image blurring can be suppressed without reducing the contrast of the image even when the dark image continues in the image scene of the moving image.

(Example 2)

Next, an image processing apparatus according to a second embodiment of the present invention will be described with reference to the drawings.

(Schematic Configuration and Operation of Image Processing Apparatus)

The schematic configuration of the image processing apparatus according to the second embodiment of the present invention is similar to the schematic configuration of the image processing apparatus according to the first embodiment shown in FIG. 1 described above. The operation of the image processing apparatus according to the second embodiment is basically the same as that of the image processing apparatus according to the first embodiment shown in FIGS. 2 and 3 described above, but a part of the flowchart in FIG. The processing contents are different from those in the first embodiment.

Specifically, the process of generating the double speed frame image in step S120 shown in FIG. 2, the process of generating the back image pattern in step S130, and the double speed frame image in step S140 as a second frame image. Some of the contents of the conversion process are different.

In the case of Example 2, in the process of generating the double speed frame image in step S120, unlike the case of the first embodiment, n sheets (n is an integer of 2 or more) having the same image as the acquired first frame image The image is created by connecting to the first frame image.

In addition, in the second embodiment, in the processing for generating the back image pattern in step S130, unlike in the case of the first embodiment, each double speed frame is not a back image pattern overwritten over the entire double speed frame image. A back image pattern is generated for overwriting a part of the image.

In the second embodiment, in the processing for converting the double speed frame image in step S140 to the second frame image, unlike the case of the first embodiment, overwriting the back image for the entire double speed frame image is performed. Instead, by overwriting a part of each double speed frame image, the double speed frame image is converted into a second frame image.

In step S140 in the case of the second embodiment, a part of the double speed frame image that overwrites the back image means that each of the n double speed frame images is divided into n partial images for each double speed frame image. One partial image is shown. The one partial image to be overwritten in each double speed frame image is at a different division position between each double speed frame image.

FIG. 6 is a diagram illustrating an example of a frame image obtained by converting a part based on a back image pattern, and FIG. 6A is a diagram illustrating a double speed frame image divided into partial images, and FIG. Fig. 6 (c) is a diagram showing a double speed frame image overwritten with the back image. In the double speed frame image shown in Fig. 6A, the entire image is divided into four partial images b1 to b4.

In addition, in each of the white image patterns p1-p4 shown to FIG. 6 (b), each back image pattern is divided with respect to the division area w1-w4 of the back image pattern corresponding to the partial image b1-b4 shown to FIG. 6 (a). With respect to, the back image is set from the upper divided area w1 to the lower divided area w4 one by one.

In addition, in the double speed frame images f1 to f4 shown in FIG. 6C, the divided regions w1 to w4 in which the back images of the back image patterns p1 to p4 shown in FIG. 6B are set for the same image as the first frame image. Is overwritten. In this case, for each of the double speed frame images f1 to f4, the back image is set from the partial image b1 at the top to the partial image b4 at the bottom with respect to each double speed frame image. That is, a back image is set to the partial image which exists in a different division position between each double speed frame image.

The moving image received from the external device is converted into a frame image group in which the double speed frame image shown in Fig. 6C is inserted between the first frame images constituting the moving image.

(effect)

As described above, in the image processing apparatus 1 of the present embodiment, a moving image received from an external device is a double speed frame image shown in the example of FIG. 6C between each first frame image constituting the moving image. Is converted to the inserted frame image group.

In the example shown in Fig. 6 (c), since back images are set to partial images at different division positions among respective double speed frame images, the back image can be displayed over the entire frame by integrating these double speed frame images for a period. have. Thereby, similarly to the case of Embodiment 1 described above, the effect of inserting a back image between each first frame image constituting a moving image can be obtained. Further, by increasing or decreasing the number of double speed frame images to be inserted between each first frame image, and increasing or decreasing the number of divisions of the double speed frame images, the width of the partial image for setting the back image can be increased or decreased. As a result, by adjusting the number of double speed frame images and the width of partial images, the effect of suppressing moving image blurring and the contrast of the images can be finely and precisely adjusted.

Incidentally, the image processing in the above-described embodiment can be easily realized without requiring complicated image processing or the like.

(Modification 1)

In the above-described embodiment, in the operation of generating the back image pattern, as shown in the flowchart shown in Fig. 3, by comparing the brightness level with a predetermined threshold value, the normal white (white with high luminance value) or gray (luminance) Back to a slightly lower value). However, the present invention is not limited to this, but a back image having a variable luminance value may be set according to the brightness level. 7 is a diagram illustrating a change in brightness of a moving image and a back image. As shown in Fig. 7, the brightness of the back image may be set to be variable according to the brightness of the first frame image constituting the moving image.

As a result, the contrast of the back image to be inserted between the first frame images constituting the moving image can be set in correspondence with the contrast of the image scene of the moving image, thereby blurring the moving image while maintaining the contrast suitable for each image scene. Can be suppressed.

(Modification 2)

In the above-described embodiment, in the second embodiment, as in the example shown in FIG. 6, the double-speed frame image is divided in the vertical direction, and the back images are set one by one from the upper partial image b1 to the lower partial image b4. . However, the direction of dividing the double speed frame image and the order of setting the back image in each partial image are not limited to this. For example, by dividing the double speed frame image in the vertical direction and setting the back image in order from the lower partial image to the upper partial image, or dividing the double speed frame image in the horizontal direction, from the left partial image to the right partial image, Alternatively, the back image may be set in order from the partial image on the right to the partial image on the left.

Even in this configuration, similarly to the first embodiment described above, the effect of inserting a back image between each first frame image constituting a moving image can be obtained. Further, by adjusting the number of double speed frame images and the width of partial images, the effect of suppressing moving image blur and the contrast of the images can be finely and precisely adjusted.

(Modification 3)

In the above-described embodiment, the image processing apparatus implementing the present invention has been described, but the image processing circuit may be implemented instead of the image processing apparatus. 8 is a block diagram illustrating an example of a schematic configuration of an image processing circuit according to an embodiment of the present invention. As shown in FIG. 8, the image processing circuit 5 includes a first frame image acquisition circuit 51, a second frame image insertion circuit 61, and a frame image output circuit 71. In addition, the second frame image insertion circuit 61 includes a double speed frame image generation circuit 62, a brightness detection circuit 63, a back image pattern generation circuit 64, and a second frame image conversion circuit 65. have. Processing of each circuit shown in FIG. 8 is the same as that of the corresponding each part provided in the image processing apparatus 1 shown in FIG. The above image processing apparatus and image processing circuit may be provided in an electro-optical device or an electronic device.

1 is a block diagram showing an example of a schematic configuration of an image processing apparatus according to a first embodiment of the present invention;

2 is a flowchart showing the operation of the image processing apparatus according to the first embodiment of the present invention;

3 is a flowchart showing an operation of generating a back image pattern;

4 is a diagram showing an example of a frame image converted based on a back image pattern, FIG. 4A is a diagram showing a back image pattern, and FIG. 4B is inserted between the first frame images. A diagram showing one second frame image,

FIG. 5 is a diagram showing an example of a frame image converted based on a back image pattern having different luminance values, FIG. 5A shows two back image patterns having different luminance values, and FIG. A diagram showing a second frame image inserted between one frame image;

FIG. 6 is a diagram showing an example of a frame image obtained by converting a part based on a back image pattern. FIG. 6A is a diagram showing a double speed frame image divided into partial images, and FIG. Fig. 6 (c) is a diagram showing a double speed frame image overwritten with a back image,

7 is a view showing a change in brightness of a moving image and a back image;

8 is a block diagram showing an example of a schematic configuration of an image processing circuit according to an embodiment of the present invention;

Fig. 9 shows a conventional example in which black is inserted between frame images constituting a moving image.

Explanation of symbols for the main parts of the drawings

1 image processing apparatus 5 image processing circuit

11: first frame image acquisition unit 21: second frame image insertion unit

22: double speed frame image generation unit 23: brightness detection unit

24: back image pattern generation section 25: second frame image conversion section

31 frame image output section 51 first frame image acquisition circuit

61: second frame image insertion circuit 62: double speed frame image generation circuit

63: brightness detection circuit 64: back image pattern generation circuit

65: second frame image conversion circuit 71: frame image output circuit

Claims (9)

A first frame image acquisition unit for acquiring a plurality of first frame images constituting a moving image; A second frame image insertion section for generating a second frame image including a white image representing a white image, and inserting the second frame image between each of the acquired plurality of first frame images; A frame image output unit for outputting the plurality of first frame images into which the second frame image is inserted An image processing apparatus comprising: The method of claim 1, The second frame image inserting unit, A double speed frame image generation unit for generating a double speed frame image subsequent to each other in time series from each of the obtained plurality of first frame images; A back image pattern generation unit for generating a back image pattern including the back image for converting the double speed frame image into the second frame image; A second frame image conversion unit that converts the double speed frame image into the second frame image based on the back image pattern An image processing apparatus comprising: The method of claim 2, The second frame image conversion unit converts the double speed frame image to the second frame image by setting the back image to the entire image of the double speed frame image based on the back image pattern. Device. The method of claim 2, The double-speed frame image generation unit generates the double-speed frame image of n frames (n is an integer of 2 or more) having the same image as the first frame image continuously in time series from the first frame image of one, The second frame image conversion unit differs between the double speed frame images among the n partial images when the respective double speed frame images of the n frames are divided into n partial images. Converting each of the double speed frame images to the second frame image by setting the back image to one partial image at the divided position An image processing apparatus comprising: The method according to any one of claims 2 to 4, The second frame image inserting unit further includes a brightness detecting unit detecting a level of brightness of the acquired first frame image, The back image pattern generation unit increases the luminance value of the white image included in the white image pattern when the detected brightness level is high, and lowers the luminance value of the white image when the detected brightness level is low. Setting a luminance value of the white image according to the detected level of brightness. An image processing apparatus comprising: The method of claim 5, wherein The back image pattern generation unit increases the luminance value of the back image when the detected level of brightness exceeds a predetermined threshold, and the luminance of the back image when the detected level of brightness does not exceed the threshold. And the luminance value of the back image is set by comparing the detected level of brightness with the threshold value so as to lower the value. A first frame image acquisition step of acquiring a plurality of first frame images constituting a moving image; A second frame image insertion step of generating a second frame image including a back image representing a white image, and inserting the second frame image between each of the obtained plurality of first frame images; A frame image output step of outputting the plurality of first frame images into which the second frame image is inserted; An image processing method comprising: The image processing apparatus of Claim 1 was provided. The electro-optical device characterized by the above-mentioned. An electronic device comprising the image processing device according to claim 1.

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