| 摘要 |
PURPOSE:To detect a moving body and to discriminate its shape on real-time basis through a moving body detector, by using a video signal from a TV camera and a spatial filter function and calculating the spatial function of a video pattern. CONSTITUTION:A video signal A of an object A from a TV camera 1 is denoted as f(x,y). A control circuit 2 controls the camera by a horizontal and a vertical synchronizing signal and also sends a vertical address signal B and a horizontal address signal C to an RAM3 synchronously with said synchronizing signals. The spatial function S of a video pattern is found from sf(x.y)F(x.y)dxdy where F is a spatial filter function, so the value of said F at a corresponding picture element (x,y) is stored in an RAM previously and multiplication 5 and integration 6 are performed to find the spatial function S. Then, a CPU4 detects a moving body, discriminates its shape and detects its speed. |
