Calculation method of ink concentration of light color diffusion area in virtual drawing
A technology of virtual drawing and diffusion area, applied in the field of virtual drawing, which can solve the problems of reducing the simulation effect of ink diffusion and failing to reflect the diffusion of ink, and achieve the effect of enhancing the simulation effect
Inactive Publication Date: 2015-04-29
DALIAN UNIV OF TECH
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[0003] Based on the research status at home and abroad, it is found that in the ink diffusion simulation of virtual drawing, there is a limitation that the ink concentration in the light color diffusion area is uniformly distributed, which cannot reflect the real ink diffusion situation, and reduces the simulation effect of ink diffusion.
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[0037] In this specific embodiment, the method for calculating the ink concentration in the light-color diffusion area is described by taking the drawing of a point in the virtual drawing as an example. In this specific embodiment, the diffusion radius L1 of the dark color diffusion area=16 paper element side length, the width L of the light color diffusion area 2 =2 paper element side length, rice paper model absorption degree i=3. The amount of ink particles in the dark diffusion area M 深墨 =2628 the number of ink particles, the amount of ink particles in the dark diffusion area M 深 =3582 the number of ink particles, the amount of ink particles M in the light-colored diffusion area 浅墨 =172 the number of ink particles. m 深墨 , M 深 , M 浅墨 All are relative quantities and have no influence on the simulation effect. The specific process is as follows:
[0038] 1. Calculate the ink concentration in the dark diffusion area, and obtain θ according to formula (1) 深 =0.73367; ...
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The invention discloses a calculation method of ink concentration of a light color diffusion area in virtual drawing and belongs to the technical field of the virtual drawing. The diffusion area is divided into a deep color diffusion area and the light color diffusion area; the light color diffusion area is divided into ring areas which are equal in width; and ink concentration decay degree parameters are introduced and the calculation method of the ink concentration of the light color diffusion area is provided. The calculation method comprises calculation of the ink concentration of the deep color diffusion area, calculation of the ink concentration decay degree of the light color diffusion area, calculation of the ink concentration of the light color diffusion area, and the like, therefore, the ink concentration of one ring area of the light color diffusion area can be obtained. According to the method, the change rule of the ink concentration of the light color diffusion area is disclosed, the limitation that the ink concentration of the light color diffusion area is uniformly distributed in the existing virtual drawing method is overcome, and the ink diffusion and emulation effect in the virtual drawing is enhanced.
Description
technical field [0001] The invention relates to the technical field of virtual rendering, in particular to a method for calculating ink concentration in a light-color diffusion area in virtual rendering. Background technique [0002] In order to achieve the real ink diffusion effect in virtual drawing, it is necessary to simulate the ink diffusion on the basis of the rice paper model. Ink wash is composed of tiny particles, which use rice paper as a carrier and move in the cells of the rice paper. In the literature "Tosiyasu L.Kunii, G.V.Nosovskij, T.Hayashi.A Diffusion Model for Computer Animation of Diffuse Ink Painting [J]. Computer Animation, 1995", Kunii et al. abroad proposed that the diffusion of ink and ink begins with the diffusion of water. The diffusion of particles drives ink particles to move between adjacent paper cells, and the principle of dark diffusion area, light color diffusion area and diffusion boundary is expounded. Zhang et al. in the literature "Zh...
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IPC IPC(8): G06F19/00
Inventor 侯增选郭超孙景华赵宁刘文慧李少武李万杰张邦磊
Owner DALIAN UNIV OF TECH