Hair modeling and portrait editing method based on single image
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A single image, hair technology, applied in the field of image processing, can solve problems such as ill-posed single-viewpoint modeling, and achieve the effect of strong adaptability
Active Publication Date: 2012-11-28
ZHEJIANG UNIV
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[0011] Single-view modeling problems are inherently ill-posed
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[0027] The core technology of the present invention is to carry out three-dimensional reconstruction of hair and other parts in a single portrait and apply it to functions such as hairstyle modeling and portrait editing. The method is mainly divided into the following five main steps: image preprocessing, head 3D model reconstruction, 2D hair extraction, 3D hairstyle reconstruction, synthesis and application.
[0028] 1. Image preprocessing: Based on the simple strokes of the user, the Lazy-Snapping image segmentation method is used to interactively segment the image into four parts: the character's hair, the character's face (the part not covered by the hair), the character's body, and the background. Use the alpha-matting method to calculate the opacity value in the hair area of the character and separate the foreground and background colors, and fill in the occluded parts of the character's body and background area;
[0029] like figure 1 As shown, this step is realized ...
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Abstract
The invention discloses a hair modeling and portrait editing method based on a single image. The method can be used for rebuilding three-dimensional structures of parts such as the hairstyle and the head of a figure in an inputted image, and can realize various portrait editing functions by a small quantity of user inputs; and after steps of image preprocessing, head three-dimensional model rebuilding, two-dimensional hairline extracting and three-dimensional hairstyle rebuilding, portrait editing functions such as image three-dimension, hairstyle migration and hairstyle editing are realized finally. The method of building a three-dimensional hair model from the single image is first proposed, a series of practical portrait and hairstyle editing functions are realized, and compared with the conventional method, the method has good effects. Besides, the hair modeling and portrait editing method has the advantages of simplicity and convenience in interaction, high computing efficiency, and the like.
Description
technical field [0001] The invention relates to the field of image processing, in particular to a hair modeling and portrait editing method based on a single image. Background technique [0002] The relevant research background of the present invention is briefly described as follows: [0003] 1. Portrait Editing [0004] Since portraits are the main component of real photos and one of the most interesting image types, portrait editing has important research and application value. [0005] Although some portrait editing methods that directly act on the two-dimensional space of the image have been used in face beautification (Leyvand, T., Cohen-Or, D., Dror, G., and Lischinski, D.2008.Data-driven enhancement of facial attractiveness.ACM Trans.Graph.27,3,38:1-38:9.), Unspecified source face replacement (Bitouk,D.,Kumar,N.,Dhillon,S.,Belhumeur,P.N.,and Nayar ,S.K.2008.Face Swapping:Automatically replacing faces in photographs.ACM Trans.Graph.27,39:1-39:8.), face enhancement ...
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