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Cartoon animation fabrication method based on video extracting and reusing

A cartoon animation and production method technology, applied in animation production, image data processing, instruments, etc., can solve the problem that the quality of transition frames cannot be guaranteed

Inactive Publication Date: 2008-07-09
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One is that the key frames in this method still need to be designed by an animator, so it is not suitable for amateur animation enthusiasts; the other is that the quality of the transition frames generated by interpolation cannot be guaranteed

Method used

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  • Cartoon animation fabrication method based on video extracting and reusing
  • Cartoon animation fabrication method based on video extracting and reusing
  • Cartoon animation fabrication method based on video extracting and reusing

Examples

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Embodiment

[0079] The most famous domestic cartoons are the series of cartoons with the theme of Journey to the West, including "Havoc in Heaven" and "Three Fights of the Bones". Classic cartoons have the same style works too. The steps of reusing the frames in these cartoons to obtain a new animation sequence in combination with the specific technical solutions described above are as follows:

[0080] (1) Using the previously described grayscale information in the image, calculate the gradient of each frame in the image and detect the outline of the character, and use the pixel filling algorithm to obtain the silhouette of the character. Specifically, the basic idea of ​​extracting contours for any cartoon frame is to calculate the second-order derivative of each pixel on the gray level one by one, and it can be approximated by the Laplacian of Gaussian filter (LOG). When the second-order derivative is zero, the point is defined as a part of the boundary; the extracted boundary image s...

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Abstract

The invention discloses a cartoon animation producing method based on video extraction and reuse. The invention comprises the following steps of: firstly dividing a cartoon video into cartoon frames; next, extracting cartoon roles via the foreground dividing technique based on the boundary; then, calculating the distance between any two frame roles and obtaining a distance matrix via using the role similarity on the boundary; then constructing an undirected graph via using the manifold learning arithmetic according to the obtained distance matrix; finally, appointing any two points in the undirected graph and establishing the shortest path between the two points which comprises the frames to form a smooth cartoon frame sequence. The method has the advantages of: effectively extracting the cartoon roles from the complex background via designing a foreground extraction technique based on boundary; making the similarity between roles more accurately by calculating the movement attribute of the roles in every frame via optical flow tracking technique; and constructing a cartoon data reuse platform to facilitate a user to produce cartoon animations conveniently and rapidly via manifold learning.

Description

technical field [0001] The invention relates to the field of two-dimensional cartoon animation, in particular to a cartoon animation production method based on video extraction and reuse. Background technique [0002] Cartoon animation has a wide range of applications, including education, advertising, entertainment and so on. Traditional cartoon production is divided into: plot design, detail design, sound recording, key frame drawing, transition frame drawing, background drawing, etc. Traditional animation is a cumbersome production process, especially the drawing of transition frames requires a lot of time and work for animators. [0003] The current computer-aided animation design system mainly hopes to automatically draw the transition frame based on the key frame to reduce the workload of the animator, that is, to establish a corresponding relationship between each part of the adjacent two key frames, and generate a transition frame through interpolation based on the ...

Claims

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Application Information

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IPC IPC(8): G06T13/00
Inventor 庄越挺肖俊俞俊
Owner ZHEJIANG UNIV
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