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Method, apparatus, and program for compressing images, and method, apparatus, and program for decompressing images

a compression apparatus and image technology, applied in the field of image compression apparatus, image compression method, image compression program, etc., can solve the problems of increasing circuit cost and corresponding increases, and achieve the effects of restoring compressed images, reducing image size, and cost reduction

Inactive Publication Date: 2014-04-08
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006]The present invention has been developed in view of the foregoing circumstances. It is an object of the present invention to provide an image compressing apparatus an image compressing method, and an image compressing program that enables cost reductions, by decreasing the number of encoders used to compress images when compressing two or more images at different compression rates.

Problems solved by technology

In this technique, it is necessary to provide the same number of compressing sections as the number of videos to be compressed, which results in the cost of circuits increasing corresponding to the number of compressing sections which are provided.
Therefore, it is necessary to manage the two sets of video data such that they are correlated, in order to obtain the original video, which is troublesome.

Method used

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Examples

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Comparison scheme
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first embodiment

[0112]Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. FIG. 1 illustrates an image compressing apparatus 10 according to the present invention. The image compressing apparatus 10 is equipped with: an image input means 11; a region of interest detecting means 12; an image reducing means 13; a multiplexing means 14; a compressing means (encoder) 15; a region of interest data attaching means 16; and an output means 17. The functions of each component of the image compressing apparatus 10 can be realized by a computer executing processes according to a predetermined program.

[0113]The image input means 11 inputs processing target images. The image input means 11 inputs images which are photographed employing a photography apparatus (not shown) as processing target images, for example. Alternatively, the image input means 11 may read out processing target images from a storage device (not shown) that stores images there...

second embodiment

[0145]The multiplexing means 34 generates multiplex images, by multiplexing the reduced images reduced by the image reducing means 33 and the region of interest images generated by the region of interest detecting means 32 within an image space. As will be described later, in the second embodiment, not the region of interest image itself, but a region of interest image in the form of a difference image generated by the difference image generating means 38 is multiplexed into the multiplex image. The multiplexing means 34 may employ a multiplex image having a number of pixels in the horizontal direction equal to the number of pixels in the horizontal direction of a region of interest image, and a number of pixels in the vertical direction equal to a sum of the number of pixels in the vertical direction of the region of interest image and the number of pixels in the vertical direction of a reduced image. The multiplexing means 34 first arranges the reduced image in the upper portion o...

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PUM

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Abstract

Costs are reduced, by decreasing the number of encoders used to compress images when compressing two or more images at different compression rates. A region of interest is detected within a processing target image, and a region of interest image is generated. A reduced image is generated by reducing the size of the processing target image. The reduced image and the region of interest image are multiplexed in an image space to generate a multiplex image. The multiplex image is compressed to generate compressed image data.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention is related to an image compressing apparatus, an image compressing method, and an image compressing program. More specifically, the present invention is related to an image compressing apparatus, an image compressing method, and an image compressing program that extract regions of interest from images, and perform image compression such that the image quality of the regions of interest and other regions are different. In addition, the present invention is related to an image decompressing apparatus, an image decompressing method, and an image decompressing program that decompress compressed images.[0003]2. Description of the Related Art[0004]There are known techniques in which characteristic regions are extracted from within images, the images are divided into the characteristic regions and background regions other than the characteristic regions, and the characteristic regions and the background r...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G06K9/36G06K9/46
Inventor NOGUCHI, YUKINORI
Owner FUJIFILM CORP