发明授权
US06215909B1 Method and system for improved digital video data processing using 4-point discrete cosine transforms 失效
使用4点离散余弦变换改进数字视频数据处理的方法和系统

  • 专利标题: Method and system for improved digital video data processing using 4-point discrete cosine transforms
  • 专利标题(中): 使用4点离散余弦变换改进数字视频数据处理的方法和系统
  • 申请号: US08971904
    申请日: 1997-11-17
  • 公开(公告)号: US06215909B1
    公开(公告)日: 2001-04-10
  • 发明人: Ching-Fang ChangC. C. LeeNaofumi Yanagihara
  • 申请人: Ching-Fang ChangC. C. LeeNaofumi Yanagihara
  • 主分类号: G06K936
  • IPC分类号: G06K936
Method and system for improved digital video data processing using 4-point discrete cosine transforms
摘要:
Methods and systems for data compression and decompression are disclosed. Specifically, the method for data compression of the present invention receives four inputs representing pixel information of an image and performs a combination of a 4-point discrete cosine transform (DCT) and a weighting function to obtain four outputs representing digital representations of an image. The method for data decompression receives four inputs representing digital representations of an image and performs a combination of an inverse weighting function and a 4-point inverse discrete cosine transform (IDCT) to obtain pixel components of an image. The methods and systems of the present invention may be used in optimizing digital video encoders and decoders.
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