Method for detecting area of skin color of human body in image compression domain

Abstract

The invention discloses a method for detecting human skin color region in JPEG image compression domain, comprising the steps of: initializing system parameters; performing Huffman decoding and inverse quantization on a to-be-detected JPEG image to obtain DCT coefficients corresponding to all image blocks on Y, Cb and Cr components; calculating color and texture characteristics of each image block; calculating skin color probability of each image block; according to the skin probabilities and texture characteristics, judging if each image block is a human skin color region. The advantages of the invention: it need not completely decompress an image but directly operates on a compressed code flow, speeding up the human skin color detection and improving detecting accuracy.

Description

technical field [0001] The invention relates to a method for detecting a human skin color area in an image, in particular to a detection method for a human body skin color area in a JPEG image compression domain. Background technique [0002] An important type of information in images is human information, and human skin is an important physiological feature of human beings. Fast and accurate detection of human skin color regions in images has important theoretical and practical value in applications such as face detection and sensitive image filtering. [0003] JPEG (Joint Photographic Experts Group) is an international still image compression standard formulated by the still image compression standard formulation committee under the International Organization for Standardization (ISO). Due to the excellent quality of JPEG for image static compression, it has achieved great success. Eighty percent of the images on the website currently use the JPEG compression standard. ...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a human body skin color area detection method on the JPEG image compression domain, which overcomes the defects of complex operation steps and large amount of calculation in the existing detection method, and realizes the rapid detection of human body skin color area

[0012] Another object of the present invention is to provide a method for detecting human skin color areas in the JPEG image compression domain, which overcomes the defect of low detection accuracy of skin color areas in existing detection methods, and realizes accurate detection of human body skin color areas

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