| 摘要 |
<p>PURPOSE:To attain to accelerate the detection speed of a target and to enhance the tracking capacity of said target by reducing a correlation operating time, by compressing data by providing an adder circuit for adding picture elements of a picture cut off by gates in horizontal and vertical directions. CONSTITUTION:An image signal is subjected to A/D conversion and a picture 16 is cut off by the first gate 15 of a gate circuit 4 and, in the succeeding picture, a picture 18 is cut off by the second gate 17 of a gate circuit 5. In this case, the data of the picture 16 is compressed by an adder circuit 19 and, similarly, the data of the picture 18 is compressed by an adder circuit 20. The compressed data are stored in memories 21, 22 and operation is performed in a correlation operating circuit 8 by using these compressed data. Therefore, a correlation operating time is reduced to accelerate the detection speed of a target and the tracking capacity of the target can be enhanced.</p> |
