TWI492619B - System for zooming different areas of image with different zooming scales and method thereof - Google Patents

Description

System and method for scaling different regions of an image at different zoom ratios

An image zooming system and method, in particular, a system and method for scaling different regions of an image at different zoom ratios.

Since the image zooming technology of the image has been developed, various devices having the display function, when displaying the data, for example, when displaying a webpage and displaying an article side by side, if the displayed data includes an image in the form of a picture, In order to make the user have a better visual effect for the user to read, each device usually first zooms the image contained in the displayed data, and then displays the scaled image.

However, at present, each device zooms the image, and only uses a single zoom ratio to scale the entire image. Since the current image zooming technique usually causes image distortion, the scaled image is not clear enough, and the zoom ratio is more Larger, the more severe the image distortion after scaling, that is, the larger the zoom ratio, the more blurred the zoomed image. Therefore, if the scale used by each device to zoom the image is too large, or the area of the message expressed in the image is too small, after the image is scaled, the message expressed in the image tends to be too severe, so that the image is too severe. The message being expressed is too vague to be read by the user.

In summary, it can be seen that in the prior art, there has been a long-standing problem that an image may be too blurred after being scaled so that the user cannot read it. Therefore, it is necessary to propose an improved technical means to solve this problem.

In view of the problem that some images in the prior art are too blurred after scaling, the present invention discloses a system and a method for scaling different regions in an image with different zoom ratios. The method, wherein: the system for zooming different regions in an image with different zoom ratios includes at least: an image loading module for loading a pre-stored original image; and an area determining module for determining the original image. The effective area and the invalid area; the area zooming module is configured to scale the effective area with the first zoom ratio, and to zoom the invalid area by the second zoom ratio; the image combination module is configured to use the zoomed effective area and The zoomed invalid area is combined into a zoomed image; the image output module is used to output a zoomed image.

The method for zooming different regions in an image with different scaling ratios includes the steps of: loading a pre-stored original image; determining an effective area and an invalid area in the original image; and scaling the effective area by the first scaling ratio and The invalid area is scaled by the second scaling ratio; the combined effective area and the zoomed invalid area are zoomed images; the zoomed image is output.

The system and method disclosed in the present invention are different from the prior art in that the present invention solves the prior art by determining the effective area and the invalid area in the original image and respectively scaling the effective area and the invalid area at different scaling ratios. The problem can be achieved, and the distortion of the effective area in the original image can be reduced, so that the information in the scaled image is sufficient for the user to understand the technical effect.

The features and embodiments of the present invention will be described in detail below with reference to the drawings and embodiments, which are sufficient to enable those skilled in the art to fully understand the technical means to which the present invention solves the technical problems, and The achievable effects of the present invention.

The invention can scale the image in different zoom ratios when scaling the image The effective area and the invalid area are used to reduce the effective area of the image because the image is zoomed too much and the content is unrecognizable.

The effective area mentioned in the present invention refers to an area in the image in which a message to be expressed is recorded, including but not limited to an area in which an image or a pattern is present in the image, and the invalid area mentioned in the present invention refers to an area outside the effective area. The area, for example, a blank area in the image, an area having only a small number of images, and the like, but the invention is not limited thereto.

The system operation of the present invention will be described below by first referring to the system architecture diagram of the different regions in the image with different scaling ratios in the "Fig. 1". As shown in FIG. 1, the system of the present invention includes an image loading module 110, an area determining module 120, an area zooming module 150, an image combining module 160, and an image output module 170.

The image loading module 110 is responsible for loading the image to be zoomed. The image loaded by the image loading module 110 is referred to as "original image" in the present invention. The original image is stored in advance in a storage medium inside the apparatus in which the present invention is executed, or is stored in advance in other apparatuses external to the apparatus for carrying out the present invention, and the present invention is not particularly limited. If the original image is stored in another device external to the device for performing the present invention, the image loading module 110 will download the original image through a network protocol such as HTTP or FTP or a transmission protocol such as USB or RS-232, but the image is loaded. The protocol used by module 110 to load the original image is not limited to the above.

The area decision module 120 is responsible for determining the effective area and the invalid area in the original image loaded by the image loading module 110. In an original image, the region decision module 120 can determine one or more active regions, and can also determine one or more invalid regions.

The area determining module 120 can detect a blank portion of the original image to determine an invalid area and an effective area in the original image, for example, the area determining module 120. The blank portion of the original image may be directly determined as an invalid region, or the blank portion of the original image whose scale or area exceeds a predetermined value may be determined as an invalid region, and then the other portion of the non-invalid region is determined as the effective region. . The area determining module 120 can also determine the effective area and the invalid area according to the pixel color in the original image. For example, the area determining module 120 can determine the unit area according to the amount or complexity of the pixel color in the unit area in the original image. The effective area or the invalid area, when the pixel color in the unit area is more than a certain number, the pixel color of the adjacent two pixels is significantly different, or the number of times the pixel color changes in the vertical direction, the horizontal direction or any other direction reaches a certain level. For the value, the area decision module 120 can determine that the unit area is a valid area, and vice versa. The area determining module 120 can also define an effective area and an invalid area according to the input signal. That is, the area determining module 120 can provide one or more areas directly on the original image through the input module 190, and will be The framed area is defined as a valid area, and the unselected area is defined as an invalid area. However, the manner in which the area decision module 120 determines the effective area and the invalid area is not limited to the above.

In some embodiments, the area decision module 120 may also record location information of each valid area and/or each invalid area in the original image. The position information recorded by the area determining module 120 is data indicating the position of the effective area/invalid area in the original image, for example, the coordinates of the upper left corner of the effective area/invalid area in the original image, etc., but the present invention does not This is limited to this.

The area zoom module 150 is responsible for using the first zoom ratio area to determine the effective area determined by the module 120, and using the second zoom ratio area to determine the invalid area determined by the module 120. Wherein, when there are multiple valid areas or invalid areas determined by the area determining module 120, the area zooming module 150 generally uses the same The first scaling scales all the active areas, and all the invalid areas are also scaled by the same second scaling. However, the present invention is not limited thereto. In some embodiments, the area zooming module 150 can also be used. The different first scaling scales respectively scale the respective active regions, and/or may scale the respective invalid regions separately using different second scaling scalings.

In general, the first scaling ratio used by the area scaling module 150 to scale the effective area is not the same as the second scaling ratio used to scale the invalid area. The present invention is not particularly limited, but the first scaling ratio is usually greater than Or equal to the second scaling, in some embodiments, the second scaling may even be zero (ie, the invalid area is deleted). It should be noted that the first scaling ratio and the second scaling ratio may be predetermined values, but in some embodiments, the first scaling ratio and the second scaling ratio may also be calculated and generated by the scaling policy module 130. The zoom policy module 130 will be described later.

The image combination module 160 is configured to combine the effective area scaled by the area zoom module 150 and the invalid area scaled by the area zoom module 150 into a new image. In the present invention, the image combination module 160 combines new The image is called a "zoom image."

In general, the image combination module 160 can determine the relative position of the effective area and the invalid area of the original image according to the position information of the effective area and the invalid area recorded by the area determining module 120 in the original image, thereby combining and scaling. The effective area and the zoomed invalid area, for example, when the effective area is above/right of the original image and the invalid area is below/left of the original image, the image combining module 160 also sets the zoomed effective area to the scaled Above/left of the invalid area.

The image output module 170 is responsible for outputting the combined image assembly module 160. Put the image. The image output module 170 can display the zoomed image, store the zoomed image into a storage medium inside the apparatus for performing the present invention, or store the zoomed image into other devices external to the apparatus for performing the present invention, thereby outputting the zoomed image, but the image output mode The manner in which the group 170 outputs the scaled image is not limited to the above, and any output mode that allows the zoomed image to continue to be used later can be used in the present invention.

The present invention may further include an additional zoom policy module 130. The zoom policy module 130 is responsible for the position of the active area determined by the area determining module 120 in the original image loaded by the image loading module 110 and/or The scaling strategy is determined according to the proportion of the invalid area determined by the area determining module 120 in the original image loaded by the image loading module 110. The scaling policy determined by the scaling policy module 130 includes at least a first scaling ratio and a second scaling ratio used by the regional scaling module 150.

In some embodiments, for example, when the effective area is above the original image, the scaling policy module 130 may depend on the ratio of the length of the original image to the length required to scale the image (hereinafter referred to as "target length"). Calculating the first zoom ratio and the second zoom ratio, so that the zoom image combined by the image combining module 160 conforms to the target length, and, for example, when the effective area is to the right of the original image, the zoom policy module 130 can be based on the original image. The ratio of the width to the width required to zoom the image (hereinafter referred to as "target width") is calculated, and the first zoom ratio and the second zoom ratio are calculated, so that the zoom image combined by the image combining module 160 conforms to the target width. Similarly, the scaling strategy module 130 can also calculate the first scaling ratio and the second scaling ratio according to the ratio of the length and width of the original image to the target length and width (ie, the target length and the target width), for example, in the original image. The length of the target and the length of the original image and the ratio of the width of the original image to the target width are smaller, for example, 60% of the 60% and 66% ratios are selected, and the first scaling ratio is calculated and The second zoom ratio is such that the zoom image combined by the image combining module 160 conforms to the target length/width, wherein the length of the original image and the target length and the ratio of the width of the original image to the target width are larger, and the scaled length is / The width will be less than the target length/width.

In some embodiments, the scaling strategy module 130 may also depend on the ratio of the length of the effective area to the target length, the ratio of the width of the effective area to the target width, the length and width of the effective area, and the ratio of the length and width of the target area, or Is the ratio of the area of the effective area in the original image, determining the first scaling ratio and the second scaling ratio, for example, determining that the first scaling ratio is 60% and the second scaling ratio is 0% (that is, deleting the invalid area, making the scaling The image does not contain an invalid area), or the first scaling factor is 75%, the second scaling ratio is 25%, etc., but the invention is not limited thereto.

In addition, since the area determining module 120 may determine multiple active areas and/or invalid areas, the scaling policy module 130 may also determine different first scaling ratios for each effective area, similarly, scaling strategy mode. Group 130 may also determine a different second scaling for each of the invalid regions.

Next, the operation system and method of the present invention will be explained with reference to the first embodiment, and please refer to the "2nd drawing" flowchart of the method for scaling different regions in the image with different zoom ratios.

When the original image is scaled by the present invention, the image loading module 110 can load the pre-stored original image (step 210). In this embodiment, it is assumed that the image loading module 110 downloads the original image 300a as shown in the "FIG. 3A" from the network to the server, and the original image 300a downloaded by the image loading module 110 mainly expresses the content. For a tree 311.

After the image loading module 110 loads the pre-stored original image (step 210), the region determining module 120 can determine the original loaded by the image loading module 110. The active area and the invalid area in the image (step 220). In this embodiment, it is assumed that the area determining module 120 detects the blank portion of the original image 300a, and as shown in the "FIG. 3B", after detecting the blank portion in the original image 300a, the invalid area 321a is determined. And determining that the area of the non-invalid area 321a in the original image 300a is the effective area 310a. Similarly, the area determining module 120 can also determine the effective area 310a according to the pixel color of the tree 311 in the original image 300a and the pixel color of the background, and The area of the non-effective area 310a in the original image 300a is judged to be the invalid area 321a.

After the area determining module 120 determines the effective area and the invalid area in the original image (step 220), the area zooming module 150 may zoom the effective area determined by the area determining module 120 by the first scaling, and use the second zoom. The scaling area determines the invalid area determined by module 120 (step 250). In this embodiment, it is assumed that the area zooming module 150 will use the predetermined first zoom ratio, such as 77%, to scale the effective area 310a in the original image 300a, and use the predetermined second zoom ratio, such as 28%, to scale the original. Invalid area 321a in image 300a.

In this embodiment, if the zoom policy module 130 is further included, the zoom policy module is scaled before the area zoom module 150 scales the effective area by the first zoom ratio and scales the invalid area by the second zoom ratio (step 250). The position of the effective area determined by the area determining module 120 in the original image loaded by the image loading module 110 and/or the invalid area determined by the area determining module 120 may be in the image loading module 110. The ratio in the original image loaded determines a scaling strategy that includes at least a first scaling ratio and a second scaling ratio (step 235). It is assumed that the scaling policy module 130 first calculates the proportion of the invalid area 321a (or the effective area 310a) in the original image 300a, and determines the first scaling ratio and the second scaling ratio according to the calculated ratio, for example, according to the calculated The scale of the scale determines the first scaling ratio and the second scaling ratio For example, if the zoom policy module 130 determines that the first zoom ratio and the second zoom ratio are 77% and 28%, respectively, the region zoom module 150 may calculate the first zoom ratio and the first generated by the zoom policy module 130. The two scaling scales the active area and the invalid area, respectively (step 250).

After the area zoom module 150 scales the effective area by the first zoom ratio and scales the invalid area by the second zoom ratio (step 250), the image combining module 160 can combine the valid area and the path after being scaled by the area zooming module 150. The zoomed inactive area of the area zooming module 150 is a zoomed image (step 260), and the image output module 170 can output the zoomed image. In the present embodiment, as shown in the "3C", in the zoom image 300b combined by the image combining module 160, the scaled down effective area 310b is reduced by a smaller proportion than the scaled invalid area 321b. That is, the scaled effective area 310b is larger than the scale of the scaled invalid area 321b in the scaled image 300b, and therefore, the present invention is compared with the conventional technique of scaling the entire original image using a single zoom ratio. The scale of the effective area 310b in the zoomed image may be large. Therefore, in the case where the scaled image size is the same, the effective area 310b in the zoomed image of the present invention is clearer than the effective area in the conventional zoomed image.

Hereinafter, the operation system and method of the present invention will be explained in the second embodiment. Please continue to refer to "Fig. 2". When the original image is scaled by the present invention, the image loading module 110 can load the pre-stored original image (step 210). In the present embodiment, it is assumed that the image loading module 110 loads the original image 300c as shown in the "3D" image in the storage medium of the device for executing the present invention. The original image 300c mainly expresses a segment. Text.

Loading the pre-stored original image in the image loading module 110 (step 210) Thereafter, the region decision module 120 can determine the valid region and the invalid region in the original image (step 220). In this embodiment, it is assumed that the area determining module 120 detects the blank portion of the original image 300c, and as shown in the "3E", after detecting the blank portion in the original image 300c, the invalid area 321c is determined. And determining that the area of the non-invalid area 321c in the original image 300c is the effective area 310c. Similarly, the area determining module 120 can also determine the effective area 310c according to the portion of the original image 300c whose color is constantly changing in black and white. The area in which the non-effective area 310c in the original image 300c is determined is the invalid area 321c.

After the area determining module 120 determines the effective area and the invalid area in the original image (step 220), the area zooming module 150 may scale the effective area by the first scaling and zoom the invalid area by the second scaling (step 250). . In this embodiment, it is assumed that the area zooming module 150 uses the first zoom ratio and the second zoom ratio determined by the zoom policy module 130 to respectively scale the effective area 310c and the invalid area 321c in the original image 300c.

Therefore, before the area zoom module 150 scales the effective area by the first zoom ratio and scales the invalid area by the second zoom ratio (step 250), the zoom policy module 130 can determine the position of the effective area in the original image and/or A scaling policy including at least a first scaling ratio and a second scaling ratio is determined according to a ratio of the invalid region in the original image (step 235).

In this embodiment, it is assumed that the scaling policy module 130 first calculates the proportion of the invalid area 321c (or the effective area 310c) in the original image 300c, and the proportion of the invalid area 321c in the original image 300c is greater than or equal to a predetermined value. When 50%, the first scaling ratio and the second scaling ratio are determined in the manner as described in the first embodiment. And when the ratio of the invalid area 321c in the original image 300c is less than a predetermined value, The play strategy module 130 calculates the first zoom ratio and the second zoom ratio according to the position of the effective area 310c in the original image 300c. If the zoom policy module 130 is in the effective area 310c on the left and right of the original image 300c, the first zoom ratio and the second zoom ratio are calculated according to the ratio of the width of the original image 300c to the target width, and the original image is in the active area 310c. When the upper and lower sides of 300c are up, the first zoom ratio and the second zoom ratio are calculated according to the ratio of the length of the original image 300c to the target length, and if the effective area 310c is at the center of the original image 300c, the first embodiment is used. The method calculates the first zoom ratio and the second zoom ratio. Therefore, as shown in FIG. 3E, the effective area 310c is at the lower left of the original image 300c. Therefore, the zoom policy module 130 simultaneously depends on the length and width of the original image 300c. The ratio between the first zoom ratio and the second zoom ratio is calculated according to the ratio of the target length to width, thereby maintaining the relative position of the zoomed effective area and the zoomed invalid area in the combined image.

In this manner, after the zoom policy module 130 determines the zoom strategy (step 235) including at least the first zoom ratio and the second zoom ratio according to the position of the effective area in the original image and/or according to the ratio of the invalid area in the original image. The area zooming module 150 may scale the effective area by the first zoom ratio and scale the invalid area by the second zoom ratio (step 250), and the image combining module 160 may combine the scaled effective area and the scaled invalid area into a zoom. The image (step 260), the image output module 170 can output a zoomed image. In the present embodiment, as shown in the "3F", in the zoom image 300d combined by the image combining module 160, the scaled down effective area 310d is reduced by a smaller proportion than the scaled invalid area 321d. That is, the ratio of the effective area 310d in the zoomed image of the present invention is larger than the ratio of the effective area in the scaled image generated by scaling the original image by a single zoom ratio, and thus, in the zoomed image of the present invention Effective area 310d will be more conventional Put the effective area in the image clear.

Hereinafter, the operation system and method of the present invention will be explained in the third embodiment. Please continue to refer to "FIG. 2". When the original image is scaled by the present invention, the image loading module 110 can load the pre-stored original image (step 210). In the present embodiment, it is assumed that the image loading module 110 is loaded with the original image 400a as shown in FIG. 4A from the storage medium of the device for executing the present invention. The original image 400a mainly expresses a content. The mathematical symbol "2 ³ ".

After the image loading module 110 loads the pre-stored original image (step 210), the region determining module 120 can determine the valid area and the invalid area in the original image (step 220). In this embodiment, it is assumed that the area determining module 120 determines the effective areas 411a and 412a according to the portion of the original image 400a in which the pixel color changes in black (mathematical symbol) and white (background), and determines that the original image 400a is not The area belonging to the effective areas 411a and 412a is the invalid area 421a as shown in "Fig. 4B".

After the area determining module 120 determines the valid area and the invalid area in the original image (step 220), the area determining module 120 can record the position information of the determined effective area and the invalid area in the original image (step 231). Then, the zoom policy module 130 may determine a zoom strategy that includes at least the first zoom ratio and the second zoom ratio according to the position information of the recorded effective area in the original image and/or according to the ratio of the invalid area in the original image. Step 235).

In this embodiment, since the area determining module 120 determines two effective areas, the scaling policy module 130 first determines whether the valid areas 411a and 412a need to use the same first scaling ratio, since the original in this embodiment The size of the numbers "2" and "3" in the mathematical symbol "2 ³ " represented by the image 400a is significant. Therefore, the scaling policy module 130 determines that the first scaling ratio of the effective areas 411a and 412a needs to be the same. The effective area 411a and the effective area 412a are prevented from being the same size after being scaled, so that the mathematical symbol "2 ³ " represented by the original image 400a is mistaken by the user as "23". However, if the size of the effective area 411a and the effective area 412a is meaningless, the scaling policy module 130 may scale the effective area 411a and the effective area 412a, respectively, using different first scaling ratios.

After the scaling policy module 130 determines whether the valid regions 411a and 412a need to use the same first scaling ratio, the first scaling ratio and the second scaling ratio may be determined in a manner as described in the second embodiment.

The zoom policy module 130 determines a zoom policy including at least a first zoom ratio and a second zoom ratio according to the position information of the recorded effective area in the original image and/or the proportion of the invalid area in the original image (step 235). After that, the area zooming module 150 may scale the effective areas 411a, 412a using the first scaling determined by the scaling policy module 130, and scale the invalid areas 421a by the second scaling (step 250).

After the area zoom module 150 uses the first zoom ratio effective area 411a, 412a and scales the invalid area 421a by the second zoom ratio (step 250), the image combining module 160 can combine the scaled effective area with the scaled The invalid area is a zoomed image (step 260). In this embodiment, the image combining module 160 sets the zoomed effective area 412b to be valid after zooming according to the position information of the effective area 411a and the effective area 412a recorded by the area determining module 120 in the original image 400a. The upper right of the area 411b.

After the image combining module 160 combines the zoomed effective area and the zoomed invalid area into a zoomed image (step 260), the image output module 170 may output the zoomed image. In the present embodiment, as shown in FIG. 4C, in the zoom image 400b combined by the image combining module 160, the scaled down effective areas 411b and 412b are reduced by a smaller scale than the scaled invalid area 421b. The ratio is small, and the scaled effective area 411b and the effective area 412b still maintain the "2 ³ " style, that is, the ratio of the effective areas 411b and 412b in the zoomed image of the present invention is more conventionally scaled by a single zoom ratio. The proportion of the effective area in the scaled image produced by the image is large, and therefore, the effective areas 411b and 412b in the zoomed image of the present invention are clearer than the effective area in the conventional zoom image.

In summary, it can be seen that the difference between the present invention and the prior art is that there is a technical means for determining the effective area and the invalid area in the original image, and respectively scaling the effective area and the invalid area with different scaling ratios. The method can solve the problem that some images in the prior art are too blurred after being scaled, thereby achieving a reduction in the distortion of the effective area in the original image, so that the information in the scaled image is sufficient for the user to understand the technical effect.

Furthermore, the method for scaling different regions in an image with different zoom ratios can be implemented in hardware, software or a combination of hardware and software, or can be implemented in a centralized manner in a computer system or distributed by different components. The decentralized implementation of several interconnected computer systems.

While the embodiments of the present invention have been described above, the above description is not intended to limit the scope of the invention. Any modification of the form and details of the practice of the present invention, which is a matter of ordinary skill in the art to which the present invention pertains, is a patent protection of the present invention. range. The scope of the invention is to be determined by the scope of the appended claims.

110‧‧‧Image Loading Module

120‧‧‧Regional Decision Module

130‧‧‧Scale Strategy Module

150‧‧‧Zone Zoom Module

160‧‧‧Image Combination Module

170‧‧‧Image output module

190‧‧‧Input module

300a‧‧‧ original image

300b‧‧‧Zoom image

300c‧‧‧ original image

300d‧‧‧Zoom image

310a‧‧ Effective area

310b‧‧‧Zoomed effective area

310c‧‧ effective area

310d‧‧‧Zoomed effective area

311‧‧‧ tree

321a‧‧‧Invalid area

321b‧‧‧Invalid area after zooming

321c‧‧‧Invalid area

321d‧‧‧Invalid area after zooming

400a‧‧‧ original image

400b‧‧‧Zoom image

411a‧‧‧Active area

411b‧‧‧Zero effective area

412a‧‧‧Active area

412b‧‧‧Zoomed effective area

421a‧‧‧Invalid area

421b‧‧‧Invalid area after scaling

Step 210‧‧‧ Load pre-stored original images

Step 220‧‧‧Determine the effective area and the invalid area in the original image

Step 231‧‧‧ Record the location information of the active area and the invalid area in the original image

Step 235‧‧‧Determining the scaling strategy based on the position of the active area in the original image and/or based on the proportion of the invalid area in the original image The strategy includes at least a first scaling ratio and a second scaling ratio

Step 250‧‧‧Scale the active area with the first zoom ratio and the invalid area with the second zoom ratio

Step 260‧‧‧The combined effective area and the zoomed invalid area are zoomed images

Step 270‧‧‧ Output zoom image

FIG. 1 is a system architecture diagram of zooming in different regions of an image with different zoom ratios according to the present invention.

2 is a flow chart of a method for scaling different regions in an image with different zoom ratios according to the present invention.

FIG. 3A is a schematic diagram of an original image according to an embodiment of the present invention.

FIG. 3B is a schematic diagram of an effective area and an invalid area according to an embodiment of the present invention.

FIG. 3C is a schematic diagram of image zooming according to an embodiment of the present invention.

FIG. 3D is a schematic diagram of an original image according to an embodiment of the present invention.

FIG. 3E is a schematic diagram of an effective area and an invalid area according to an embodiment of the present invention.

FIG. 3F is a schematic diagram of image zooming according to an embodiment of the present invention.

FIG. 4A is a schematic diagram of an original image according to an embodiment of the present invention.

FIG. 4B is a schematic diagram of an effective area and an invalid area according to an embodiment of the present invention.

FIG. 4C is a schematic diagram of the zoomed image according to an embodiment of the present invention.

Step 210‧‧‧ Load pre-stored original images

Step 220‧‧‧Determine the effective area and the invalid area in the original image

Step 231‧‧‧ Record the location information of the active area and the invalid area in the original image

Step 235 ‧ ‧ Depending on the position of the effective area in the original image and / or according to the proportion of the invalid area in the original image, the scaling strategy is determined, the scaling strategy includes at least the first scaling ratio and the second scaling ratio

Step 250‧‧‧Scale the active area with the first zoom ratio and the invalid area with the second zoom ratio

Step 260‧‧‧The combined effective area and the zoomed invalid area are zoomed images

Step 270‧‧‧ Output zoom image

Claims (10)

A method for scaling different regions in an image with different scaling ratios, the method comprising at least the steps of: loading a pre-stored original image; determining at least one active region and at least one invalid region in the original image; Scaling and scaling each of the effective regions and scaling each of the invalid regions by at least one second scaling; combining the scaled effective region and the scaled invalid region into a zoomed image; and outputting the zoomed image. The method for scaling different regions in an image according to the first aspect of the patent application, wherein the step of determining the effective region and the invalid region in the original image is to detect a blank portion in the original image. Determining the invalid area and the effective area, determining the valid area and the invalid area according to the pixel color in the original image, or defining the effective area and the invalid area according to the input signal. The method for scaling different regions in an image with different scaling ratios as described in claim 1, wherein the method further comprises: determining, according to the effective region, the step of determining the effective region and the invalid region in the original image The position in the original image and/or the scaling of the invalid region in the original image determines a scaling strategy that includes at least the first scaling and the second scaling. Zooming in the image at different zoom ratios as described in item 3 of the patent application scope The method of the same region, wherein the step of determining the scaling strategy further comprises: calculating the first scaling ratio according to a ratio of a length and a width of the original image to a target length and width or a ratio of a length and a width of the effective region to a target length and width; The step of the second scaling. The method for scaling different regions in an image with different scaling ratios as described in claim 3, wherein the step of determining the scaling strategy further comprises determining whether to scale each valid region/each of the invalid regions to use the same first scaling ratio. / second scaling ratio, when determining that the same first scaling ratio/second scaling ratio is to be used, the method further comprises the step of combining the zoomed effective area and the scaled invalid area as the zoomed image The step of setting the scaled effective area and the scaled invalid area to the position of the effective area in the original image. A system for scaling different regions of an image at different zoom ratios, the system comprising at least: an image loading module for loading a pre-stored original image; and an area determining module for determining the original image At least one active area and at least one invalid area; an area zooming module for scaling the active area by at least a first zoom ratio, and for scaling the invalid area by at least a second zoom ratio; an image combination module The zoomed effective area and the scaled invalid area are combined into a zoomed image; and an image output module is configured to output the zoomed image. A system for scaling different regions of an image at different zoom ratios as described in claim 6 of the patent application, wherein the region determining module detects the original image The blank portion determines the invalid area and the effective area, determines the valid area and the invalid area according to the pixel color in the original image, or defines the effective area and the invalid area according to the input signal. A system for scaling different regions of an image at different zoom ratios as described in claim 6 wherein the system further includes a zoom policy module for determining a position and/or basis of the active region in the original image. The ratio of the invalid region in the original image determines a scaling policy, wherein the scaling strategy includes at least the first scaling ratio and the second scaling ratio. A system for scaling different regions in an image with different scaling ratios as described in claim 8 wherein the scaling strategy module is further configured to use a ratio of a length to a width of the original image to a target length or width or a length of the effective region. The ratio of the width to the target length and width is calculated, and the first scaling ratio and the second scaling ratio are calculated. The system for scaling different regions in the image by using different scaling factors, as described in claim 8, wherein the scaling strategy module is further configured to determine whether to scale the effective regions/each of the invalid regions to use the same first scaling ratio/ The second zoom ratio, the image combination module is further configured to: when the zoom strategy module determines that the same first zoom ratio/second zoom ratio is to be used, determining the valid area recorded by the module according to the area and the invalid The location information in the original image is set, and the scaled effective area and the scaled invalid area are set.