Image processing and transmission using high and low compression ratios depending on image change conditions
First Claim
Patent Images
1. A transmitting apparatus comprising:
- change detection means of detecting whether an image to be processed is changed exceeding a predetermined criterion;
compression means including a time management means of managing a predetermined time, wherein the compression means compresses said image so that a compression degree may be higher when a detection result by said change detection means indicates that said image is changed exceeding said predetermined criterion, and when the case where the detected result by said change detection means indicates that said image is changed not exceeding said predetermined criterion elapsed by said predetermined time, compresses said image so that the compression degree may become lower; and
output means of outputting said compressed image.
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Abstract
In an image processing method of sequentially loading, compressing, and transmitting images to thereby display the images, there is provided the image processing method capable of preventing the images from degradation while keeping the responsibility until the image is displayed. When a changed region is determined to be present, the image is compressed using a method with a high compression ratio, while when there is no changed region and a predetermined period of time elapses, the image is determined to be static to thereby be compressed using a method with a low compression ratio and very little distortion.
11 Citations
30 Claims
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1. A transmitting apparatus comprising:
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change detection means of detecting whether an image to be processed is changed exceeding a predetermined criterion; compression means including a time management means of managing a predetermined time, wherein the compression means compresses said image so that a compression degree may be higher when a detection result by said change detection means indicates that said image is changed exceeding said predetermined criterion, and when the case where the detected result by said change detection means indicates that said image is changed not exceeding said predetermined criterion elapsed by said predetermined time, compresses said image so that the compression degree may become lower; and output means of outputting said compressed image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 15)
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11. An image processing system comprising:
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an image signal generating apparatus of generating an image; a transmitting apparatus including change detection means of detecting whether said image to be processed that is generated by said image signal generating apparatus is changed exceeding a predetermined criterion, compression means of compressing said image so that a compression degree may be higher when said detection result by said change detection means indicates that said image is changed exceeding said predetermined criterion, and when said detection result by said change detection means indicates that said image is changed not exceeding said predetermined criterion elapsed by said predetermined time, compressing said image so that the compression degree may become lower, and transmission means of transmitting said compressed image, wherein said compression means comprises a time management means of managing said predetermined time; and a receiving apparatus including expanding means of expanding said transmitted image utilizing information regarding compression of said image by said compression means, and output means of outputting said expanded image. - View Dependent Claims (12, 13)
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14. An image processing method comprising:
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change detection step of detecting whether an image to be processed is changed exceeding a predetermined criterion; compression step including a time management step of managing a predetermined time, wherein the compression step compresses said image so that a compression degree may become higher when a detection result by said change detection step indicates that said image is changed exceeding said predetermined criterion, and when said detection result by said change detection step indicates that said image is changed not exceeding said predetermined criterion elapsed by said predetermined time, compressing said image so that compression degree may become lower; and output step of outputting said compressed image.
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16. A transmitting apparatus including
change detection means of detecting whether an image to be processed is changed exceeding a predetermined criterion, compression means of compressing said image so that the compression degree of a predetermined rectangular region including the changed region may become higher when a detected result by said change detection means indicates that said image is changed exceeding said predetermined criterion, and when the detected result by said change detection means indicates that said image is not changed exceeding said predetermined criterion, of compressing said image so that a compression degree of a rectangular region including all of said rectangular regions among former images than said image may become lower, output means of outputting said image in the predetermined rectangular region including the changed region when the detected result by said change detection means indicates that said image is changed exceeding said predetermined criterion, and when the detected result by said change detection means indicates that said image is not changed exceeding said predetermined criterion, of outputting said image in said rectangular region including all of said rectangular regions.
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26. An image processing system including,
an image signal generating apparatus of generating an image, a transmitting apparatus including change detection means of detecting whether the image to be processed, which is generated by said image signal generating apparatus is changed exceeding a predetermined criterion, compression means of compressing said image so that a compression degree of the predetermined rectangular region including said changed region may become higher when the detected result by said change detection means indicates that said image is changed exceeding said predetermined criterion, and when the detected result by said change detection means indicates that said image is not changed exceeding said predetermined criterion, of compressing the image so that a compression degree of a rectangular region including all of the rectangular regions among former images than said image may become lower, and output means of outputting said image in the predetermined rectangular region including said changed region when the detected result by said change detection means indicates that said image is changed exceeding said predetermined criterion, and when the detected result by said change detection means indicates that said image is not changed exceeding said predetermined criterion, of outputting said image in said rectangular region including all of said rectangular regions, a receiving apparatus including expanding means of expanding said transmitted image utilizing information regarding compression of said image by said compression means, and output means of outputting said expanded image.
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29. An image processing method including,
a detection step of detecting whether an image to be processed is changed exceeding a predetermined criterion, a compression step of compressing said image so that a compression degree of the predetermined rectangular region including said changed region may become higher, when the detected result by said change detection means indicates that said image is changed exceeding said predetermined criterion, and when the detected result by said change detection means indicates that said image is not changed exceeding said predetermined criterion, compressing said image so that a compression degree of a rectangular region including all of said rectangular regions among former images than said image may become lower, and an output step of outputting said image in the predetermined rectangular region including said changed region when the detected result by said change detection means indicates that said image is changed exceeding said predetermined criterion, and when the detected result by said change detection means indicates that said image is not changed exceeding said predetermined criterion, outputting said image in said rectangular region including all of said rectangular regions.
Specification