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Cartoon role contour tracing method based on key frame

A contour tracking and key frame technology, applied in image data processing, instrumentation, computing, etc.

Inactive Publication Date: 2010-08-11
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because in the cartoon motion sequence, the change between two adjacent frames is relatively large, and the outline of the character part often undergoes large deformation during the motion process, and this method assumes that the tracking curve is between two adjacent frames. The change is relatively small, and it is not suitable for tracking the outline curve of the character on the cartoon motion sequence

Method used

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  • Cartoon role contour tracing method based on key frame
  • Cartoon role contour tracing method based on key frame
  • Cartoon role contour tracing method based on key frame

Examples

Experimental program
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Embodiment Construction

[0049] The cartoon character profile tracking method that the present invention proposes, at first mark the outline of character on the key frame of the motion sequence of cartoon character, construct an optimization model according to the mark on the key frame, track out the outline of cartoon character automatically by solving this optimization model. position on other frames of the motion sequence. Because traditional cartoons are produced at a low frame rate, the outline of a cartoon character changes greatly between two adjacent frames; moreover, the parts of a cartoon character often undergo exaggerated deformation during motion. The optimized model effectively utilizes time sequence constraints and space constraints, and can accurately track the character's outline from the cartoon character's motion sequence.

[0050] Below in conjunction with the implementation example of tracking the character profile in the motion sequence of 15 frames from the length of this cartoo...

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Abstract

The invention discloses a cartoon role contour tracing method based on key frame, comprising the following steps of: firstly, artificially selecting key frames from a section of motion sequence of cartoon roles and drawing up the contours of the cartoon roles on each key frame by using curves; then, constructing an optimization model by utilizing contour information labeled on the key frames; and finally, transforming the optimization model into a non-linear least square question for solving and tracing the positions of the contours of the cartoon roles on other frames of the motion sequence. The method can precisely trace the contours of the cartoon roles from a section of motion sequence by effectively utilizing constraint information on time sequences and space, and can be used for analyzing the deformations the roles on each position of the motion sequence by utilizing the contour of the cartoon roles on each position of the motion sequence, wherein the contour of the cartoon roles on each position is captured and obtained by the contour tracing method.

Description

technical field [0001] The invention relates to a key frame-based method for tracking character outlines from cartoon character motion sequences, belonging to the field of computer two-dimensional animation. Background technique [0002] The production of traditional cartoon animation is usually time-consuming and labor-intensive. As traditional cartoon animation is widely used in various fields, a large number of ready-made cartoon animation materials can be reused. By reusing existing cartoon materials, the complexity of cartoon animation production can be reduced to a certain extent, and the efficiency of cartoon animation production can be improved. [0003] Motion capture and retargeting of cartoon characters is one of the ways to reuse existing cartoon materials. This reuse method extracts the motion style of a cartoon character from an existing cartoon animation sequence, and then assigns this motion style to a new cartoon character to generate a new motion sequence...

Claims

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Application Information

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IPC IPC(8): G06T7/20
Inventor 肖俊周春銮庄越挺
Owner ZHEJIANG UNIV
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