Method and apparatus for black generation of black generating digital color image processing system of digital color image processing system

摘要

The present invention relates to a black generation processing method and apparatus for automatically adjusting black density according to characteristics of an original image in a digital color image processing apparatus, An intermittency extracting unit 40 for extracting intensity information from R, G and B data provided from the logarithmic correction unit 5, A histogram conversion unit 50 for receiving intensity information controlled by the central processing unit 1 to generate a histogram and outputting a selection signal, a histogram conversion unit 50 for converting the minimum value provided from the minimum value selection unit 20 and the histogram conversion An LUT unit 30 for receiving the selection signal provided from the input unit 50 and outputting the black signal K information and a black signal generation unit 40 for subtracting the black signal K information value from each of the C, And generates information C ', M', and Y ', respectively, And a subtractor 60 for providing the subtraction result.