| 摘要 |
PURPOSE:To remove an isolated point consisting of >=2 picture elements at a high speed by resetting flip-flops corresponding to up to k$*l picture elements when binary states of (k+2)X(l+2) peripheral picture elements are all coinci dent. CONSTITUTION:A window 2 is connected in series with a picture element memory consisting of shift registers 1 and picture element signals are inputted to the shift registers 1 through the window 2. For example, flip-flops 21-24 are used so as to reset four inside picture elements of the window 2 of 4X4 picture elements individually. Then, it is checked whether 12 picture elements of the window 2 are all coincident with a white or black level or not and when all elements are coincident, a reset signal is supplied to reset specific flip-flops, thereby removing the isolated point consisting of up to four picture elements. |
