JPS60249463A - Recorder of multiformat picture - Google Patents

Abstract

PURPOSE:To record always picture data with a specified image frame memory capacity independently of the division number of pictures, by providing an auxiliary memory and an editing processing part which controls this auxiliary memory and compresses and interpolates picture data. CONSTITUTION:After selection of picture data in an auxiliary memory 4, control of the storage position of a picture in an image frame memory 6 and the picture size, or compression and interpolation processings of picture data are performed by an editing processing part 5, picture data is written in the image frame memory 6. When the editing processing for desired picture data is terminated and the write to the image frame memory 6 is completed, contents of the image frame memory 6 are recorded on a recording photosensitive sheet by a picture recording part. Thus, pictures are recorded at optional positions with optional picture sizes.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention records a plurality of images dividedly on one recording photosensitive sheet 7, in particular, a CT image, an RI image, an ultrasound image,
The present invention relates to a multi-format image recording device that records medical diagnostic images such as NMR images using a light beam.

2. Description of the Related Art Conventionally, as a device for recording, for example, a plurality of medical diagnostic images on a single recording photosensitive sheet, there is a multi-format camera that sequentially photographs images of a CRT monitor using an optical system.

As shown in FIGS. 1(a) to (e), the image 2 recorded on the recording photosensitive sheet l of the same size differs in size depending on the number of divisions, but generally it is printed on the CRT surface. The disadvantage is that the image quality is poor due to blurred images and a coarse number of scanning lines.

In order to improve these drawbacks, recently a system has been developed in which a light beam such as a laser beam is scanned and the light intensity is modulated to directly record on a photosensitive recording sheet. In this type of light beam image recording device, the image is -Ll-RAM (Random
It is necessary to store the image frame memory in the image frame memory (Access Memory). Furthermore, when recording a plurality of images on one recording photosensitive sheet, it is required to record the plurality of images in one scan in order to simplify the structure of the apparatus. However, in order to record multiple images on a recording photosensitive sheet every second time, an image frame memory with a huge capacity corresponding to the number of divisions is required, which inevitably increases the cost significantly. .

On the other hand, if the image frame memory function and editing processing function possessed by the image diagnostic apparatus itself such as CT are used, the original functions of the image diagnostic apparatus will stop while these functions are working to record images. The problem arises. Furthermore, an image diagnostic apparatus that has an image frame memory necessary for recording and an editing processing function is a very special device and is by no means common. Furthermore, in conventional light beam image recording devices, it is necessary to change the size of the recorded image according to the number of divisions, so generally a method is adopted in which all images are recorded using the minimum beam spot diameter determined by the maximum number of divisions. It is being However, in this method, when enlarging a recorded image, one pixel of the input image becomes the number of pixels on the recorded image, that is, the number of pixels corresponding to the enlargement magnification in heam scanning, resulting in a rough image.

Recently, a new method has been considered in which the beam spot diameter corresponding to one pixel is changed depending on the size of the recorded image, but in this case, an optical system is required to change the beam spot diameter, and the entire beam spot diameter is changed. However, the structure becomes more complicated and the cost becomes higher, and as the recorded image becomes larger, the beam diameter, that is, one pixel becomes larger, resulting in a rougher image.

An object of the present invention is to provide a high-performance multiformant image that can always be recorded with a constant image frame memory capacity regardless of the number of image divisions, and that allows high-quality images to be obtained even with large image sizes. The purpose is to provide a recording device, the gist of which is an image recording device that divides and records a plurality of images on one recording photosensitive sheet-1 using a light beam. It has an auxiliary memory that temporarily stores the input image signal, and an editing processing unit that increases or decreases the number of pixels constituting one image according to the number of image divisions at the time of recording, and compresses and interpolates the image data for that purpose. It is characterized by:

The present invention will be explained in detail below based on the embodiments shown in FIG. 12 and below.

FIG. 2 shows a schematic configuration when the input image signal A is an analog image signal, including an A/D converter 3 for quantizing the video signal from the image diagnostic device, and the quantization device. The image processing apparatus includes an auxiliary memory 4 for capturing the image data stored in the auxiliary memory 4, and an editing processing section 5 for digitally processing the image data stored in the auxiliary memory 4 and transferring the digital image data to the image frame memory 6. Note that 7 indicates an image recording section that records the contents of the image frame memory 6 on a recording photosensitive sheet;
A CRT monitor 8 displays images stored in the auxiliary memory 4 and images stored in the image frame memory 6.

The auxiliary memory 4 has a higher speed than the image frame memory and complements the frame memory, and has a capacity to store a number of images greater than the capacity at the maximum number of divisions, such as magnetic tape, magnetic disk, optical disk, etc. , magneto-optical disks, etc. The editing processing section 5 is composed of an editing controller 9, a data compression processing section 1O, and a data interpolation processing section 11, as shown in FIG. This section performs selection, designation of the number of divisions of the image to be recorded, conversion of image data values in consideration of the photosensitive characteristics of the recording photosensitive sheet, transfer of image data to the image frame memory 6, and control of the CRT monitor 8.

In this embodiment, the image is enlarged or reduced without changing the beam diameter of the laser beam used for image recording. For example, when four images 2 are recorded on one recording photosensitive sheet 1 as shown in FIG. If the beam spot diameter is the corresponding size, then both images 2 will be enlarged in the case of Fig. 1 (a) and (b), and image 2 will be reduced in the case of Fig. 1 (d) and (e). There is a need to do.

In the case of digital images, enlarging or reducing the image generally requires converting the number of pixels that make up the image, so the data compression processing unit 10 shown in FIG. 3 reduces the number of pixels in one image. Furthermore, the data interpolation processing section 11 performs digital image processing to expand the number of pixels. That is, when enlarging, data is interpolated in the horizontal and vertical directions, and, for example, pseudo data that takes an intermediate value between two data is filled in. When reducing, data is compressed in the horizontal and vertical directions, and, for example, predetermined data is erased.

In the case of Fig. 2, the input image signal A is an analog image signal, so it is quantized by the A/D converter 3 and then taken into the auxiliary memory 4, but the input image signal A is a digital image signal. If there is, it can be input directly to the auxiliary memory 4 as shown in FIG. 4, so the A/D converter 3 is not necessary.

In either case, the editing processing section 5 selects the image data in the auxiliary memory 4, controls the storage position and image size of the image in the image frame memory 6, or compresses and interpolates the image data. , the image data will be written into the image frame memory 6. Then, when the editing process for the desired image data is completed and writing to the image frame memory 6 is completed, the contents of the image frame memory 6 are recorded on the recording photosensitive sheet 1 by the image recording section 7.

FIG. 5 shows a specific example of the image recording section 7, including a D/A converter 12 that converts image data from the image frame memory 6 into analog, an optical modulator 13 driven by the analog image signal, and a laser. A condenser lens 15 that inputs the light @ 14 and the laser beam emitted from the light source 14 into the optical modulator 13, a polygon mirror 16 that scans the laser beam intensity-modulated by the optical modulator 13, and a polygon mirror 16 that scans the laser beam that has been intensity-modulated by the optical modulator 13, and the scanned laser beam. It is composed of an f.0 lens 17 that allows the light to enter the recording photosensitive sheet 1 made of silver salt or non-silver 1n.

When all the image data have been input to the image frame memory 6, the editing controller 9 shown in FIG. 3 transmits an image recording command to the image frame memory 6, and sequentially sends the image data to the D/A converter 12. Therefore, the analog image signal drives the optical modulator 13, and intensity modulation of the laser light from the laser light source 14 is performed. The laser beam intensity-modulated in this manner is scanned by a polygon mirror 16, passes through an f/θ lens 17, and records an image on the recording photosensitive sheet 1.

In this embodiment, an image recording section is shown in which the image is recorded on the recording photosensitive sheet 1 by scanning a laser beam, or a conventional method is shown in which the CRT monitor surface is photographed on the recording photosensitive sheet 1 using an optical system. It goes without saying that the present invention can be applied to the auxiliary memory as well.6 As explained above, the multi-format image recording device according to the present invention includes an auxiliary memory and an editing processing unit that controls the auxiliary memory and compresses and interpolates image data. By providing a It has the effect of enabling image recording at any position and obtaining high quality images even with large image sizes. In addition, by using auxiliary memory, the storage capacity of the image frame memory can be reduced, resulting in significantly lower manufacturing costs, and the functions of the memory within the image diagnostic device can be maintained in a free state even when recording images. The original function of the image diagnostic apparatus is not impaired.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of an example of dividing a multi-format recorded image, FIG. 2 and the following diagrams show an embodiment of the multi-formant image recording device according to the present invention, FIG. FIG. 4 is a block circuit diagram of the editing processing section, FIG. 4 is a block circuit diagram of another embodiment, and FIG. 5 is a block circuit diagram of the image recording section. 1 is a photosensitive sheet for recording, 3 is an A/D converter, 4 is an auxiliary memory, 5 is an editing processing section, 6 is an image frame memory, 7 is an image recording section, 8 is a CRT monitor, 9 is an editing controller, 10 is a data compression processing section, 11 is a data interpolation processing section, 12 is a D/A converter, 13 is an optical modulator, 14 is a laser f4: source, 15 is a condenser lens, 16 is a polygon mirror, 17 is f.0 It's a lens. Patent applicant Canon Co., Ltd. Agent Patent attorney Yukihiko Hibiya Figure 1 Figure 3

Claims (1)

[Claims] 1. An image recording device that divides and records a plurality of images on one recording photosensitive sheet using an optical beam, which temporarily stores input image signals of the plurality of images to be recorded. A multi-format image characterized by having an auxiliary memory and an editing processing unit that increases or decreases the number of pixels constituting one image according to the number of image divisions during recording, and performs image data compression and interpolation for this purpose. Recording device. 2. The multi-format image/recording device according to claim 1, wherein the data compression and interpolation are performed in horizontal and vertical directions. 3. The multi-format image recording device according to claim 1, wherein the auxiliary memory is composed of a magnetic tape, a magnetic disk, an optical disk, a magneto-optical disk, or the like.