发明名称 |
Method and apparatus for changing resolution by direct DCT mapping |
摘要 |
An apparatus for transforming the resolution of an image from a first image resolution to a second image resolution using operations in the spatial frequency domain. A first group of transform values which represent the image at the first image resolution are mapped to a second group of transform values which represent the image at the second image resolution in the spatial frequency domain. The apparatus includes stored pre-computed values which are the mapping coefficient values between the first group of transform values and the second group of transform values. The pre-computed values are retrieved from a memory and used to directly map the first group of transform values to the second group of transform values in the spatial frequency domain. <IMAGE> |
申请公布号 |
EP0786902(A1) |
申请公布日期 |
1997.07.30 |
申请号 |
EP19970101042 |
申请日期 |
1997.01.23 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
KIM, HEE-YONG |
分类号 |
H04N7/30;G06T3/40;G06T9/00;H04N1/387;H04N1/41;H04N5/14;H04N7/26;H04N7/46;H04N7/50 |
主分类号 |
H04N7/30 |
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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