Colour image edge reinforcing method

Abstract

An approach of enhancing colorful image verge includes next steps: firstly, disposing the colorful image in half tone way to produce half tone image; second, comparing the edge pixel to be enhanced of the half-tone image and its nearby pixel spotting condition to an edge enhancing table in order to find out the most fitful spotting table and relative order; third, dividing the half tone image into CMYK; forth, comparing the edge pixel to be enhanced and nearby pixel spotting condition of every color plate to the regarded spotting table and deciding perfect color plate; at last, utilizing the fitful spotting order to spot the colorful plate.

Description

technical field [0001] The present invention relates to an image edge enhancement method, in particular to a dot matrix output device used to determine how to dot the pixels at the edge of the image in a color image, so that the output image A method for enhancing the edges of color images with smoother edges. Background technique [0002] In the current field of image processing, most of the research and development focuses on improving whether the visual effect produced by the image output device (such as a printer) after image output is consistent with the actual product. Edges of original image objects, such as fonts, curves, three-dimensional objects, etc., can be approximated by using linear equations or natural logarithms, etc., to make the edges smoother. When these objects are digitized, they need to be converted into a matrix format that can be processed by an image output device, and their edges must conform to the grid of the device. [0003] However, when the ...

AI Technical Summary

Problems solved by technology

[0005] However, this method is only suitable for monochrome image output (i.e. black and white image output). When the image output device is to output color images, since each color image is composed of four different colors (Cyan, Magenta, Yellow, Black ; CMYK) color plate (plane), therefore, when the pixels at the edge of the image need to be filled, four different color plates must be considered, and there is currently no mechanism to determine the pixels at the edge of the image Which color plate should be used to fill in the dots? At this time, if four colors are used to fill in the pixels on the edge of the image at the same time, the color displayed on this pixel will be black, which may be different from the original The color of the image is different, however, it is impossible to know which color should be used to fill in the dots

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