A method and device for morphing shading in the process of typeset

Abstract

The invention discloses a method of realizing gradual changing shadings in typesetting and a device thereof. The method comprises the following steps of: generating a gradual changing template bitmap according to a gradual changing angle, a gradual changing center, a gradual changing radius of the template bitmap, and the color data of every pixel point in the template bitmap; obtaining covering the template bitmap of the object with the obtained gradual changing template bitmap according to the matrix containing the new information of the object and the size of the valid region of the object. The inventive technical proposal has the advantages of accurately realizing the gradual changing shadings with smoother gradual changing color after image magnification; adding the gradual changing types of the gradual changing shadings and enriching the art effect of the layout; reducing the calculation amount via using optimization algorithm according to the symmetry of the object; and improving the display speed of the gradual changing shadings via calculating the color data of the pixel points in the valid region of the object.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to the technology for realizing gradient shading in the typesetting process. Background technique [0002] In the fields of graphic design, advertising production, commercial printing, typesetting, etc., in order to enrich the artistic effect of the layout, gradient colors are often set for text blocks, graphic element blocks, and image blocks, and the gradient shading patterns of different gradient types are filled with the set gradient colors. [0003] The so-called gradient color is a group of colors composed of multiple gradient points, and there is a gradient center between two adjacent gradient points. The first gradient point is determined as the start point of the gradient color, the last gradient point is determined as the end point of the gradient color, and the position corresponding to the 50% color change from the start point of the gradient color to the end po...

AI Technical Summary

Problems solved by technology

If the start point and end point of the gradient color are close, multiple calculations are required to obtain the color data of each pixel of the object at different angles. The amount of calculation is huge, which will affect the display speed of the gradient shading; if the start point and The position of the end point is far away. According to the color corresponding to the color value of the gradient start point and end point, the shading template is linearly filled, then the color change is not smooth enough, and the color change has a sense of jumping

[0008] (3) Directly calculate the shading bitmap of the object. The shading bitmap generally has more pixels, so when calculating the color data of the bitmap pixels, the amount of calculation is relatively large, resulting in slower calculation speed

[0009] With the rapid development of typesetting technology, higher and higher requirements are put forward for the function and effect of image processing in the typesetting process. The existing linear and circular gradient types can no longer meet the requirements of typesetting technology for typesetting layout, and the The accuracy of the effect of generating gradient shading is required, and the display speed of generating gradient shading needs to be improved

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