| 摘要 |
PURPOSE:To display a painting out in a real time by extracting a closed curve for crossing a scanning line, and controlling a subsequent painting out in accordance with odd and even picture elements whose boundaries are continued. CONSTITUTION:Image information from a graphic memory 12 and a binarization image outputting circuit 13 is scanned and the closed curve extracting means 21 of a painting out circuit 20 extracts and recognizes a closed curve for crossing a scanning line. In accordance with the recognition, which of three continued picture elements a boundary, exists in, is decided through a delaying FF, a gate circuit, etc., and in case of the odd picture element, a painting out start output is supplied to a logical output means 24, and a painting out display is executed. On the other hand, in case of the even picture element, the subsequent painting out is not executed but the painting out is ended, and the painting out display is displayed quickly in a real time. |
