Abstract: A color space transformation device includes a sensor bar. The sensor bar includes a plurality of sensor chips. Each sensor chip scans a unique section of an original image to produce first data in a first color space. A memory means stores groups of coefficients. Each group of coefficients corresponds to one of the sensor chips. A processor independently transforms each of the sections of the first data to a respective section of a second data. The transformation is performed as a function of one of the groups of coefficients corresponding to the sensor chip which produced the first data.

Abstract: A filter includes a plurality of one-dimensional first dimension filters operating in a first dimension, each of the filters operating on the digital image data in accordance with predetermined filter coefficients to produce a one-dimensional output signal. The filter also includes a plurality of one-dimensional filters, operating in a second, distinct dimension, each one-dimensional second dimension filter receiving output signals from one of the plurality of the first dimension filters and operating on the received output signals in accordance with predetermined filter coefficients to produce second filtered output signals therefrom. A weighting circuit is operatively connected to the one-dimensional second dimension filters to modify each of the produced second filtered output signals according to weighting coefficients.

Abstract: A filter for filtering digital image data includes a timing circuit to convert received line sync signal and a received page sync signal to a new line sync signal and a new page sync signal and a N.times.M filter to filter digital data based on the new line sync signal, the new video valid signal and the new page sync signal. N is a value representing a filter dimension in a slow scan direction, and M is a value representing a filter dimension in a fast scan direction. The timing circuit causes the self-timed image processing device to output (N-1)/2 scanlines of unfiltered digital image data after the received page sync signal indicates an end of an input page.