发明名称 |
Fernsehsystem zur Übertragung digitalisierter Fernsehbilder von einem Sender zu einem Empfänger |
摘要 |
A motion detector, particularly for use in a television system for transmitting television pictures in a digital form, is adapted to partition each picture into pixel blocks, to subject each pixel block to a modified intraframe transform for determining a first coefficient which corresponds to the basic picture having the lowest horizontal and highest vertical frequency, and to determine a plurality of further coefficients which correspond to basic pictures also having the lowest horizontal frequency, but a vertical frequency which is lower than that for the first coefficient. The motion detector signalizes the presence of motion within a pixel block if the first coefficient has a large absolute value, but if simultaneously none of the further coefficients has a sufficiently large absolute value. If the first coefficient has a sufficiently large absolute value, absence of motion is nevertheless signalized if simultaneously one of the further coefficients also has a sufficiently large absolute value. <IMAGE> |
申请公布号 |
DE69210355(T2) |
申请公布日期 |
1996.11.07 |
申请号 |
DE1992610355T |
申请日期 |
1992.10.23 |
申请人 |
PHILIPS ELECTRONICS N.V., EINDHOVEN, NL |
发明人 |
DE WITH, PETER HENDRIK NELIS, NL-5656 AA EINDHOVEN, NL;DEN BAKKER, ROELAND, NL-5656 AA EINDHOVEN, NL |
分类号 |
H04N7/30;G06T9/00;H04N5/14;H04N5/926;H04N7/26;H04N7/32;H04N11/04;(IPC1-7):H04N7/24 |
主分类号 |
H04N7/30 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|