发明名称 |
UP-SAMPLING FILTER FOR A DOWN CONVERSION SYSTEM |
摘要 |
An HDTV down conversion system including apparatus for forming a set of low resolution down-sampled pixel values corresponding to a current frame of a video signal from a set of low resolution pixel values corresponding to a residual image of a current frame of the video signal and from a set of down-sampled low resolution pixel values corresponding to reference frames of the video signal. The apparatus includes a memory for storing the set of down-sampled low resolution pixel values. An up-sampling processor receives from the memory and uses Lagrangian interpolation to convert the set of down-sampled low resolution pixel values corresponding to the reference frame of the video signal into a set of upsampled low resolution pixel values corresponding to the reference frame of the video signal. A summing processor adds the set of low resolution pixel values corresponding to the residual image of the current frame of the video signal to the set of upsampled low resolution pixel values corresponding to the reference frame of the video signal to form a set of low resolution pixel values corresponding to the current frame of the video signal. A decimating processor deletes selected ones of the set of low resolution pixel values corresponding to the current frame to generate the set of low resolution down-sampled pixel values corresponding to the current frame of the video signal. |
申请公布号 |
CA2281436(A1) |
申请公布日期 |
2000.04.09 |
申请号 |
CA19992281436 |
申请日期 |
1999.09.07 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
PHILLIPS, LARRY;NAIMPALLY, SAIPRASAD;MEYER, EDWIN ROBERT;KIM, HEE-YONG |
分类号 |
H04N5/44;G06T3/40;G06T5/20;G06T9/00;H04N7/01;H04N7/015;H04N7/26;H04N7/30;H04N7/36;H04N7/46;H04N7/50;(IPC1-7):H04N7/01 |
主分类号 |
H04N5/44 |
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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