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Method for generating rapid movement line shadow of cartoon animation object

A fast-moving, cartoon animation technology, used in animation production, image data processing, instruments, etc., can solve the problems of building models, difficult convolution operations, and inability to use physical knowledge, achieving real-time speed, saving paper, and improving production efficiency Effect

Inactive Publication Date: 2009-01-21
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since cartoon fast-moving lines are hand-drawn two-dimensional pictures with artistic style, they are difficult to obtain by convolution operation, and it is impossible to use physical knowledge to model them

Method used

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  • Method for generating rapid movement line shadow of cartoon animation object
  • Method for generating rapid movement line shadow of cartoon animation object
  • Method for generating rapid movement line shadow of cartoon animation object

Examples

Experimental program
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Embodiment Construction

[0058] The present invention is further described below in conjunction with the accompanying drawings.

[0059] The process of generating fast motion line shadows of objects in cartoon animation of the present invention is as follows: figure 1 As shown, the process has the following steps in sequence:

[0060] 1) The user interactively inputs the moving direction of the cartoon object;

[0061] 2) Input the cartoon fast moving object image drawn by hand;

[0062] 3) Perform edge detection on the object on the input cartoon fast moving object image;

[0063] 4) Using the input direction information and object outline, determine a set of fast-moving line shadow baselines and their distribution positions in the opposite direction of the object's moving direction (see Figure 5 );

[0064] 5) Enter the fast motion shadow type command to generate short or long shadows:

[0065] If the execution command is a short shadow, then:

[0066] Determine the length of the short shadow...

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PUM

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Abstract

The invention discloses a generation method of object rapid moving hachures of cartoon animation, which utilizes an input object shape and moving direction information to definite a baseline shape of the object rapid moving hachures and distribution positions of the object rapid moving hachures on the rear portion of the moving of an object, and corresponding types of rapid moving hachures are drew on a hachures baseline according to the types of input hachures. The method can avoid renewedly drawing different animation sequences of the rapid moving hachures of cartoon objects if the objects and the moving direction are changed when the animation are drew by manual, thereby being capable of greatly increasing the making efficiency of the animation. The method of the invention directly generates animation sequence images and stores, thereby getting rid of using paper which are used to draw the animation of the rapid moving hachures of the cartoon object through manual, and being further capable of saving a lot of paper.

Description

technical field [0001] The invention relates to a method for generating cartoon line animations, in particular to a method for generating line shadows for fast motion of objects in cartoon animations. Background technique [0002] To express the fast movement of objects in cartoon animation, animators generally draw some short or long shadows behind the fast moving objects to express the fast movement, so as to visually emphasize the fast movement of the object. In the process of animation production, it is often necessary to express the rapid movement of objects of different shapes, and each object can also move rapidly at any angle. Therefore, the animator has to draw the rapid movement shadows of different objects at different angles, which is inefficient and wasteful. paper. [0003] Cartoon fast motion line shadow drawing is related to the shape, color, motion speed and motion direction of moving objects. In photorealistic animation, convolution operation is generally ...

Claims

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Application Information

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IPC IPC(8): G06T13/00
Inventor 于金辉
Owner ZHEJIANG UNIV
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