Patent ID: 6021256
Filing Date: 2000-02-01
Classification: G06K

Abstract:
An image data processing apparatus for generating enhanced image data, the apparatus comprising:means for providing first binary image data of a plurality of pixel locations, the image data being of a first pixel resolution;means for separating a line of the image data into segments for processing in plural respective channels;means in each channel for determining a gradient magnitude corresponding to each pixel location of the first binary of image data to be processed by the respective channel;means in each channel for determining a gradient direction corresponding to each pixel location of the first binary image data to be processed by the respective channel;a decision matrix means in each channel for comparing a window of pixel locations of the first binary image data and the gradient magnitudes and directions corresponding thereto to a predetermined set of criteria and in response generating an output signal resulting from the comparison; andmeans responsive to the signal for generating respective enhanced image data, representing second binary image data of a second pixel resolution that is higher than said first resolution in response to the respective output signal of the decision matrix means.