Scan line rendering of convolutions

摘要

Disclosed are method and apparatus for applying a convolution operator to an input image to produce an output image. Image pixel data corresponding to at least a predetermined number of scan lines of the input image is provided to a buffer memory adapted to store a portion of said image. The image data may be provided from a source of such data, or alternatively it may be rendered from a object grahics environment. A finite convolution mask is applied to the image pixel data to produce a scan line of the output image. The finite convolution mask has a plurality of coefficients arranged in a predetermined number of rows and a predetermined number of columns and the predetermined number of scan lines substantially equals at least one of the number of rows or the number of columns of the convolution mask. In a preferred implementation, a scan line of the input image is discarded and a next scan line is provided for each scan line of the output image produced by the convolution. <IMAGE>