JPS641072A - Picture processor - Google Patents

Abstract

PURPOSE:To suppress picture quality from being deteriorated in conversion and to make hardware into a small scale, by detecting a specific pattern in an original image element to be referred to, and generating an image element pattern corresponding to the specific pattern. CONSTITUTION:Original image data is transferred to a line buffer 2a by every image element via a bus 8 and an input interface IF5, and the detection processing of the position of a conversion image is executed by a detection circuit 1 synchronizing with the above transfer. When the corresponding position of the conversion image element is detected, original image element data to be referred on which rotary processing is applied for the decision of an oblique line is inputted from the buffer 2a to a pattern detection circuit 3 via an image element extraction circuit 2b. Meanwhile, a pattern generation circuit 4 selects either the oblique line pattern of white, that of black, white solid, or black solid from a micro displacement signal at the position of the conversion image element from the detection circuit 1 and a signal representing the black/white of the image element in the most neighborhood of the conversion image element, then, decides the black or white of the conversion image element. The above result is sent via an output IF6 and the bus 8.