Quality analysis in imaging
First Claim
1. A system for determining the quality of video or other electronically reproduced or generated images by quality analysis, comprising:
- means for providing one or more frames of image data for analysis;
at least one digital processor;
programming for the processor;
the programming causing the processor to implement analysis of the frames according to one or more of a set of multiple criteria and to provide respective criteria outputs for the criteria;
the criteria outputs being combinable by the processor to produce a total score representing the quality of the frames as they are analyzed.
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Accused Products
Abstract
Software-implemented system and methodology to objectively quantify criteria that can produce a score indicating the quality of a video or comparable image-producing signal or other image file or sequence of display frames containing electronically reproduced or generated images. Where video is to be analyzed, executing the criteria produces a score indicating the quality of a video signal in a sequence of video frames. Three principle criteria are analyzed and then combined to produce an objective score representing video or image quality, viz., a grayscale histogram, and edge histogram, and a horizontal versus vertical sharpness graph. As each frame, as in a sequence of image frames of a video signal, is made available for analysis or to be shown within a display area, the frame is analyzed by digital processor to produce the grayscale histogram, the edge histogram, and the horizontal versus vertical sharpness graph. The results of these criteria are combined to produce a video quality score indicative of the quality of the frame of video.
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Citations
20 Claims
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1. A system for determining the quality of video or other electronically reproduced or generated images by quality analysis, comprising:
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means for providing one or more frames of image data for analysis;
at least one digital processor;
programming for the processor;
the programming causing the processor to implement analysis of the frames according to one or more of a set of multiple criteria and to provide respective criteria outputs for the criteria;
the criteria outputs being combinable by the processor to produce a total score representing the quality of the frames as they are analyzed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for determining the quality of image frames of video or other electronically reproduced or generated image data by quality analysis, comprising:
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means for providing one or more frames of image data for analysis;
at least one digital processor;
programming for the processor;
the programming causing the processor to implement;
(a) analysis of the image frames according to one or more of a set of multiple image analysis criteria, the image analysis criteria being a grayscale histogram, an edge histogram, and a horizontal versus vertical sharpness graph, (b) provision respectively therefrom of output scores according to the analysis criteria, namely a grayscale score, an edge score, and a horizontal versus vertical sharpness score, (c) weighted combination of respective criteria output scoring according to the analysis criteria as a total score representing the quality of the frames as they are analyzed.
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13. A method for objectively quantifying criteria to determine the quality of a video- or image-defining signal, comprising
providing one or more of a series of electronically reproduced or generated image frames for digital analysis, operating programmed digital processing means for analysis of the one or more image frames according to at least one of a set of multiple criteria to provide respective criteria outputs for the criteria; causing the processing means to combine the criteria outputs so as to produce a total score representing the quality of the image frames as they are analyzed. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
Specification