发明名称 |
MOTION VECTOR DETECTION CIRCUIT |
摘要 |
<p>PURPOSE:To detect a motion vector accurately even when a fluctuation of a DC component is in existence in a picture by the motion vector detection circuit used for picture compression or the like. CONSTITUTION:The circuit is provided with a high pass filter 11 eliminating a DC level of a picture signal. Then the output is given to a U' block extract circuit 12 and a frame memory 2 to move picture elements of the frame latched in the frame memory 2. Then the U block and a Us' block moved thereto are extracted. Then moving quantity is sequentially changed to detect an absolute value of each difference thereby detecting a motion vector. Thus, even when the DC component is fluctuated, the motion vector is detected accurately.</p> |
申请公布号 |
JPH06178284(A) |
申请公布日期 |
1994.06.24 |
申请号 |
JP19920352536 |
申请日期 |
1992.12.09 |
申请人 |
MATSUSHITA ELECTRIC IND CO LTD |
发明人 |
HAMAMOTO YASUO |
分类号 |
H04N19/50;H04N19/423;H04N19/51;H04N19/80;H04N19/85;(IPC1-7):H04N7/137 |
主分类号 |
H04N19/50 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|