Tracking device of correlativity

Abstract

Abstract PURPOSE:To make the pickup of luminance signal easy, by sampling the added a luminance signal of horizontal and vertical correlation windows, and taking the total sum of weighting operation to a sampled value as a binarized threshold value for a next screen. CONSTITUTION:A video signal fed from an image sensor 7 is split into the correlativity region with a region split circuit 9. Each correlativity region is converted into one dimensional multiplex signals at an addition circuit 10. The addition luminance signal thus converted is weighted with a sampling circuit 11 and weighting operation circuit 12, and total sum is obtained through an addition circuit 13. This value is tentatively stored in a memory 14 to be binarized threshold value to the next screen and input to a comparator 15. Thus, since the threshold value is automatically made, the pickup of luminance signal in following to the change such as brightness of field is easily made.

Inventors

• 👤 Kumio Kasahara
• 👤 Takashi Ito
• 👤 Makoto Ono

Bibliographic Details