Method for identifying key facial expressions of human faces
An expression recognition and facial technology, which is applied in character and pattern recognition, computer parts, instruments, etc., can solve the problems of software and equipment that do not specifically provide expression capture for animation designers, and achieve a highly practical effect.
Active Publication Date: 2014-09-10
JILIN JIYUAN SPACE TIME CARTOON GAME SCI & TECH GRP CO LTD
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Problems solved by technology
Through searching, in the field of animation production, there is no software and equipment specially provided for animation designers to capture facial expressions
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[0038] The detailed content of the present invention and its specific implementation will be further described below in conjunction with the accompanying drawings.
[0039] see figure 1 , the face key facial expression recognition method of the present invention, adopts a high-definition color camera, can be external, also can be that the machine itself carries, and camera is placed on the computer screen top that animation designer uses and gets final product. In this way, animation designers can see their own facial expressions in real time through the window provided by the software, so that they can adjust the effect of CG characters in real time.
[0040] Concrete steps of the present invention are as follows:
[0041] (1) Call the SDK (Software Development Kit, software development kit) provided by the camera manufacturer to obtain the captured video;
[0042] (2) Call the relevant functions of the open source Open CV library (Open Source Computer Vision Library, cross-p...
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The invention relates to a method for identifying key facial expressions of human faces, which belongs to the field of animation manufacturing. The method comprises the following steps: according to the inherent characteristics of human faces, intercepting the upper 1 / 5 to 1 / 3 part of a rectangular area at which a human face is located as an area in which eyebrows are located, and carrying out processing on the intercepted area so as to obtain the center point of the eyebrows; intercepting an area (with a size same as 1 / 5 of the rectangular area) from the upper 1 / 3 position of the area in which the human face is located as an area in which eyes are located, and carrying out processing on the intercepted area so as to obtain the center point of eyeballs; according to the position characteristics of the mouth on the human face, intercepting the lower 1 / 3 part of a rectangular image in which the human face is located as a mouth area, and carrying out processing on the intercepted area so as to obtain the information of three key points (a left-most point, a right-most point and a bottommost point) of the mouth; and through correlating with corresponding facial points of a manufactured CG (computer graphic) character, obtaining the key facial expression information of the CG character in real time. The method disclosed by the invention can provide a greater freedom for animation designers, and can embody the required effects of designers better.
Description
technical field [0001] The invention relates to a technique for capturing key facial expressions of actors in the field of animation production, in particular to a simple and efficient recognition method for key facial expressions on human faces. Background technique [0002] In the field of animation production, at first the images of animation characters were drawn manually frame by frame by artists according to the requirements of the script. With the rapid development of computer technology, characters from image to action have been realized through professional software. With the development of computer vision technology, the realization of character movements has changed from designing key frame skeletal animations in professional software to capturing actors' movements in real time through professional motion capture systems. In this regard, Hollywood movies are at the forefront of the world. , Such as "The Lord of the Rings", "King Kong", "The Polar Express", et...
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IPC IPC(8): G06K9/00G06K9/32
Inventor 郑立国孙亦南尤晨伟
Owner JILIN JIYUAN SPACE TIME CARTOON GAME SCI & TECH GRP CO LTD