发明授权
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

  • 专利标题: Wavelet coefficient quantization method using human visual model in image compression
  • 专利标题(中): 小波系数量化方法在图像压缩中使用人类视觉模型
  • 申请号: US13500070
    申请日: 2010-12-16
  • 公开(公告)号: US08655092B2
    公开(公告)日: 2014-02-18
  • 发明人: Bo LiHai-Heng CaoYi-hong WenHong-xu Jiang
  • 申请人: Bo LiHai-Heng CaoYi-hong WenHong-xu Jiang
  • 申请人地址: CN Beijing
  • 专利权人: Beihang University
  • 当前专利权人: Beihang University
  • 当前专利权人地址: CN Beijing
  • 代理商 Mark M. Friedman
  • 国际申请: PCT/CN2010/079875 WO 20101216
  • 国际公布: WO2012/079237 WO 20120621
  • 主分类号: G06K9/00
  • IPC分类号: G06K9/00
Wavelet coefficient quantization method using human visual model in image compression
摘要:
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.
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