发明名称 |
EFFICIENT DOWN CONVERSION SYSTEM FOR 2:1 DECIMATION |
摘要 |
An HDTV down conversion system including an apparatus for forming a low resolution 2:1 down converted video signal from an encoded video signal representing a video image. The encoded video signal is a frequency-domain transformed high resolution video signal with motion prediction. The apparatus includes a receiver for receiving encoded video signals as a plurality of high resolution frequency-domain video coefficient values. A down conversion filter receives and weights the high resolution frequency-domain video coefficient values to form a set of low passed frequency-domain video coefficients. An inversetransform processor transforms the set of frequency-domain video coefficients into a set of pixel values. An averaging filter transforms selected ones of the pixel values in the set of pixel values into averaged pixel values. A decimating processor deletes selected ones of the set of pixel values to provide the low resolution video signal. |
申请公布号 |
CA2285751(A1) |
申请公布日期 |
2000.04.09 |
申请号 |
CA19992285751 |
申请日期 |
1999.10.08 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
KIM, HEE-YONG;IAQUINTO, MICHAEL;PHILLIPS, LARRY |
分类号 |
G06T3/40;G06T9/00;G09G5/00;H04N7/01;H04N7/24;H04N19/60;(IPC1-7):H04N7/01 |
主分类号 |
G06T3/40 |
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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