Improved color vector error diffusion method based on FPGA

Abstract

The invention discloses an improved color vector error diffusion method based on an FPGA. According to the improved color vector error diffusion method based on the FPGA, error diffusion parallel processing is realized through three channels of RGB channels; through adoption of a matrix gain model, a single-channel error diffusion value can be diffused to the other two channels; a halftone process and error value generation can be realized through hardware; a multiplication in an algorithm is replaced by a gain matrix pre-memory; and each channel is processed in a streamline mode, so a halftone result of a pixel can be calculated averagely in a clock cycle through an error diffusion process. The FPGA is an operation platform. Through improvement of a color vector error diffusion algorithm of a halftone algorithm, the algorithm can be rapidly and efficiently carried out on an embedded platform. Parallel processing of color vector error diffusion among different channels can be realized. Parallel processing is carried out among primary colors. The processing efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of halftone image processing, in particular to an improved color vector error diffusion method based on FPGA. Background technique [0002] General printing machines, ink printers, and laser printers only have two colors or a very limited number of colors, and some old-fashioned monitors cannot display true color images, and they cannot fully display all the color information contained in a continuous tone image. In the field of 3D printing, there is a very important issue, that is color. 3D printing can make objects of almost any shape, but their color is only a shadow of their original form. 3D printed objects are made in one go by fusing powder or laying down extruded plastic. The control of color by these two printing methods is very primitive. Therefore, people need to print one pixel at a time like 2D printing pictures. In other words, this requires 3D printing voxel-by-voxel. Therefore, halftone ...

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Problems solved by technology

[0011] The purpose of the present invention is to provide an improved color vector error diffusion method based on FPGA, which aims to solve the problem that the color vector error diffusion method can only process one pixel at a time, requires serial processing, a large amount of calculation and storage space, and is difficult to meet real-time Sexual requirements greatly limit the problem of its scope of application

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