发明名称 |
Image processing apparatus |
摘要 |
An image processing apparatus includes a spatial filter and orthogonal transform section. The spatial filter obtains a new luminance value of each pixel of an input image on the basis of a first coefficient having a first filter characteristic which forms the desired spatial frequency adjustment filter characteristic in cooperation with a second filter characteristic, thereby generating a two-dimensional intermediate image which has the adjusted spatial frequency characteristic of the input image. The orthogonal transform section performs two-dimensional orthogonal transform for the intermediate image on the basis of a second coefficient which has the second filter characteristic, which forms the desired spatial frequency adjustment filter characteristic in cooperation with the first filter characteristic, and is used for two-dimensional orthogonal transform for compressing the intermediate image generated by the spatial filter, thereby generating image data which has the adjusted spatial frequency characteristic of the intermediate image and has undergone two-dimensional orthogonal transform for image compression. <IMAGE> |
申请公布号 |
EP1052845(A3) |
申请公布日期 |
2002.08.07 |
申请号 |
EP20000109721 |
申请日期 |
2000.05.08 |
申请人 |
NUCORE TECHNOLOGY INC. |
发明人 |
SASAI, TOSHIHIRO;KOKUDO, SHINGO;OKAMOTO, FUMITAKA |
分类号 |
G06T5/20;H04N1/41;H04N19/60;H04N19/625;H04N19/80;H04N19/86 |
主分类号 |
G06T5/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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