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Human face sketch portrait picture automatic generating method

A technology of automatic generation and portrait painting, applied in the direction of 2D image generation, image data processing, instruments, etc., can solve the problems of cumbersome process, achieve good fidelity and three-dimensional effect, and the conversion process is simple and easy

Inactive Publication Date: 2009-10-07
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

For example, in the document "Portrait Automatic Generation Algorithm Based on Sample Learning" (Chen Hong, Zheng Nanning, Liang Lin, Xu Yingqing, Shen Xiangyang, Journal of Computer Science, Volume 26, No. 2, February 2003), a sample-based learning algorithm is disclosed. Face portrait automatic generation algorithm, this method requires a large number of manually calibrated face images for learning and training, the process is relatively cumbersome, and the generated portraits have large distortion

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  • Human face sketch portrait picture automatic generating method
  • Human face sketch portrait picture automatic generating method
  • Human face sketch portrait picture automatic generating method

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Embodiment Construction

[0021] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] The image used in the embodiment is from a color digital registration photo taken, see attached figure 1 .

[0023] 1. Acquire a digital image. A digital image that needs to be automatically converted into a sketch effect is read by a computer, that is, a color digital registration photo taken that contains a human face to be converted into a sketch portrait.

[0024] The computer can determine whether the photo is a color image.

[0025] 2. Perform automatic face detection on digital images, and detect and locate the face area in the picture. There are many known methods for face area detection, such as the literature "P.Viola and M.Jones. Rapid object detection using a boosted cascade of simple features, in: Computer Vision and Pattern Recognition, 2001.CVPR 2001.Proceedings of the 2001 IEEECompu...

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Abstract

The invention relates to a human face sketch portrait picture automatic generating method which belongs to the digital image processing technology field. The method comprises: performing automatically human face detection to an acquired digital image to obtain the approximate position and size of the human face; extracting the human face area from the image and performing gray scale treatment; smoothing and filtering out skin texture while retaining the organ characteristics of the human face by the method of model based on total variation in logarithm field to obtain the first proof of the human face sketch portrait picture; and performing image enhancement treatment to the first proof of the human face sketch portrait picture to obtain the final human face sketch portrait picture; thus, the automatic conversion from a real digital photograph to a human face sketch portrait picture is finished. The invention needs no data training while converting a real picture, is a simple and easy process for portrait picture conversion, can generate picture with higher lifelike degree and third dimension effect; is not only suitable for making cartoon and artistic figure, but also suitable for making portrait pattern with high lifelike degree in the handicrafts made by etching, weaving, printing and dyeing.

Description

technical field [0001] The invention relates to a method for processing human face images, in particular to a method for automatically generating human face sketch portraits, which belongs to the technical field of digital image processing. Background technique [0002] In recent years, the use of computers to process digital photos, simplify the texture of real face images to highlight certain features to be expressed, and generate various styles of portraits, a digital media technology, has been widely used. For example, in video chats, online games, online personalized signature avatars, and etching, printing and dyeing crafts, replacing real face images with personalized virtual portraits can produce infectious entertainment and artistic effects. [0003] In the prior art, the methods for automatically generating sketch portraits from face images mainly include: [0004] One is to obtain the line features representing the face through the extraction of the face contour,...

Claims

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Application Information

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IPC IPC(8): G06T11/00
Inventor 杨飞苏剑波
Owner SHANGHAI JIAO TONG UNIV
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