| 摘要 |
PURPOSE:To extract the contour of a body easily and continuously by generating a combination of signals of four picture elements which contact a contour, and converting them into quinary signals indicating a tracing direction and storing in a picture memory. CONSTITUTION:The output of an ITV camera 72 is converted by a comparator 76 into a binary-coded digital signal, which is supplied to a TV73 for monitor display; and one horizontal-scanning-line signal delay part 77 and one picture-element-signal delay part 78 obtain four adjacent picture-element signals, which are inputted to an output conversion part 79. The output conversion part 79 outputs a quinary-coded signal indicating the tracing direction of the picture contour. This quinary-coded signal is stored in the video memory 81 to form a picture whose edge can be traced. |
