发明名称 |
Image transformation apparatus and method |
摘要 |
An SRAM is used as a pixel buffer which stores a partial image region copied from a frame buffer. A vertical filter reads a pair of target pixels arranged in a vertical direction from the pixel buffer and performs a filtering process of a discrete wavelet transform in the vertical direction. An intermediate result obtained in the filtering process is stored in a register. The vertical filter uses the intermediate result in filtering the next two pixels. A horizontal filter receives two transformed results from the vertical filter and performs a filtering process on the transformed results in the horizontal direction. The intermediate results obtained in the horizontal filtering are also stored in a register and utilized in the next filtering.
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申请公布号 |
US7197191(B2) |
申请公布日期 |
2007.03.27 |
申请号 |
US20030390909 |
申请日期 |
2003.03.19 |
申请人 |
SANYO ELECTRIC CO., LTD. |
发明人 |
OKADA SHIGEYUKI;TAKETA KAZUHIKO;YAMAUCHI HIDEKI |
分类号 |
G06F17/14;G06K9/46;G06K9/36;G06T9/00;H03H17/02;H04N1/41;H04N7/30 |
主分类号 |
G06F17/14 |
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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