System for removing color bleed in a television image adapted for digital printing

DETAILED DESCRIPTION According to one aspect of the present invention, there is provided a method of modifying image data, the image data comprising a luminance signal and a chrominance signal for each of a series of pixels forming an image.
For each pixel in the image, an edge activity value is calculated, the edge activity value being related to an amount of change in luminance signals among a neighborhood of pixels near said pixel.
For each pixel in the image, a revised chrominance value is calculated, according to a chrominance revising algorithm.
The chrominance revising algorithm includes as inputs a chrominance signal for a pixel immediately adjacent said pixel in a vertical direction, a chrominance signal for a pixel immediately adjacent said pixel in a horizontal direction, and the edge activity value for said pixel.
For each pixel in the image, the revised chrominance value is substituted for a chrominance signal of said pixel.