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Method and subsystem for evaluating colour saturation quality

A quality evaluation and saturation technology, applied in the field of color saturation quality evaluation, methods and subsystems, can solve the problems of reducing the correct rate of color saturation measurement and scoring, and cannot accurately reflect the difference between two contrast images, so as to improve the accuracy, avoid under-effects

Inactive Publication Date: 2009-12-16
HISENSE
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Problems solved by technology

In the process of realizing the present invention, the inventor found that the four extracted objective indicators could not accurately reflect the difference between the two contrasting images, thus reducing the accuracy of color saturation measurement and classification

Method used

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  • Method and subsystem for evaluating colour saturation quality
  • Method and subsystem for evaluating colour saturation quality
  • Method and subsystem for evaluating colour saturation quality

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Embodiment Construction

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0052] see figure 1 , a method for color saturation quality evaluation provided by an embodiment of the present invention, comprising:

[0053] Step 11, collect sample pictures from the video images to be evaluated.

[0054] For example, a high-end SLR camera can be used to shoot video images in a dark room to collect sample pictures.

[0055] Step 12, extract the saturation histogram comprehensive index, the saturation mean standard deviation comprehensive value, the mean value of the Cb chroma component in the YCbCr color space and the mean value of the Cr chroma component in the YCbCr color space as the objective of the color saturation quality evaluation for the sample picture index.

[0056] For a video image to be tested, the subjective evaluation that needs to be car...

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Abstract

The embodiment of the invention discloses a method and a subsystem for evaluating colour saturation quality, which can reflect the difference between two comparison images and improve the classifying accuracy rate of a colour saturation classifier. The method comprises the following steps: acquiring a sample picture from a to-be-evaluated video image; extracting a saturation column diagram composite indicator, a saturation mean value standard deviation comprehensive value, the mean value of Cb chromaticity components in an YCbCr color space and the mean value of Cr chromaticity components from the sample picture as objective indexes for evaluating colour saturation quality; and classifying the extracted objective indexes through a classifier undergoing supervised learning training and simulating subjective evaluation to obtain a colour saturation quality category. The technical scheme provided by the embodiment of the invention can be used to carry out objective evaluation of colour saturation quality of TV pictures.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method and subsystem for color saturation quality evaluation. Background technique [0002] In the patent application for "Method and system for video image quality assessment" (application number: 200810184542.3, publication date: 2009-05-06), the image quality assessment system (Image Quality Assessment Systems, referred to as IQAS) uses subjectively evaluated Video images, from which the corresponding objective indicators are extracted for training and learning, and an expert system is built to realize the quality evaluation of unknown video images to be tested. By collecting sample pictures from the video images to be tested, corresponding objective indicators are extracted from the sample pictures for different aspects of subjective evaluation, and the corresponding extracted objective indicators are classified by a classifier that has undergone supervised learnin...

Claims

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Application Information

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IPC IPC(8): H04N17/00G06K9/62
Inventor 裴雷刘微孙志阳韩健
Owner HISENSE
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