Invention Grant
US08655092B2 Wavelet coefficient quantization method using human visual model in image compression
有权
小波系数量化方法在图像压缩中使用人类视觉模型
- Patent Title: Wavelet coefficient quantization method using human visual model in image compression
- Patent Title (中): 小波系数量化方法在图像压缩中使用人类视觉模型
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Application No.: US13500070Application Date: 2010-12-16
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Publication No.: US08655092B2Publication Date: 2014-02-18
- Inventor: Bo Li , Hai-Heng Cao , Yi-hong Wen , Hong-xu Jiang
- Applicant: Bo Li , Hai-Heng Cao , Yi-hong Wen , Hong-xu Jiang
- Applicant Address: CN Beijing
- Assignee: Beihang University
- Current Assignee: Beihang University
- Current Assignee Address: CN Beijing
- Agent Mark M. Friedman
- International Application: PCT/CN2010/079875 WO 20101216
- International Announcement: WO2012/079237 WO 20120621
- Main IPC: G06K9/00
- IPC: G06K9/00

Abstract:
A wavelet coefficient quantization method using a human visual model in an image compression process is provided, which is particularly suitable for remote sensing image compression. A wavelet-domain visual quantization model is obtained through experiments based on human visual characteristics, so as to reflect the relation between distortion of wavelet coefficient blocks and human visual characteristics. The model includes a luminance component, a masking component and a frequency component, where the luminance component is calculated by low frequency coefficients after the kth level wavelet transform, the masking component is calculated by high frequency coefficients of the second and third levels, and the frequency component is calculated by a statistical method. The method may be used in combination with any mainstream wavelet compression method such as EZW, SPIHT or EBCOT.
Public/Granted literature
- US20130266237A1 WAVELET COEFFICIENT QUANTIZATION METHOD USING HUMAN VISUAL MODEL IN IMAGE COMPRESSION Public/Granted day:2013-10-10
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