JPS6429168A - Video signal processor - Google Patents

Abstract

PURPOSE:To remarkably suppress a false picture (texture) by not limiting the rate of arrangement of a multi-value processing error of a noted picture element with respect to peripheral picture elements to a constant value and revising and utilizing sequentially plural distribution rates in a distribution coefficient set together with the picture element processing. CONSTITUTION:A multi-value processing output selection means 107 is provided and a high-order n-bit of an input correction level is used as a multi-value processing output data, a multi-value level corresponding to a multi-value output data is selected and outputted. Thus, the picture of the multi-value level is reproduced easily. Moreover, the arrangement ratio of multi-value processing error of the noted picture element with respect to surrounding picture elements is revised by means of an arrangement coefficient generating means 110 together with the processing of the picture element. Thus, a function that the distribution quantity of the multi-value processing error is not biased to the surrounding picture elements in a prescribed relative position with respect to the noted picture element is realized so as to prevent production of a texture pattern on the processed output picture.