Object illumination migration method based on edge retaining

A technology of light migration and edge preservation, applied in the field of virtual reality and computer vision, which can solve the problems of poor effect and difficult video moving objects, etc.

Inactive Publication Date: 2012-06-20
BEIHANG UNIV
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  • Description
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Problems solved by technology

This method needs to use multi-view images to obtain accurate geometric information of static objects for light migration, but the precise geometric information of general moving objects is difficult to obtain, so it is difficult to extend to light migration of video moving objects; Doesn't work well with color

Method used

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  • Object illumination migration method based on edge retaining
  • Object illumination migration method based on edge retaining
  • Object illumination migration method based on edge retaining

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Embodiment Construction

[0022] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0023] refer to figure 1 The main flow chart of the present invention, the image illumination migration method based on the edge-preserving filter of the present invention includes the following basic processes: first, the reference object and the target object are located for feature points, and the reference object is deformed to the target object by using the image deformation method according to the feature points Align the reference object with the target object, and then decompose the deformed reference object and target object into a chroma layer and a lightness layer, and then divide the lightness layer into a large-scale layer and a detail layer through a least-squares filter. Under the guidance of the large-scale layer, filter processing is performed on the large-scale layer of the reference object. The present invention adopts an adaptive filter parameter...

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Abstract

The invention discloses an object illumination migration method based on edge retaining. The object illumination migration method comprises the steps of: aligning images, layering color, weighting least square filtering, guiding filtering, and combining the images to generate an illumination migration result; modifying a weight least square filter, computing the adaptive weight least square filtering according to the unsmooth degrees of the images so that filtering with higher degree is executed in the unsmooth area, and saving more detail information in a detail layer; and modifying a guiding filter so that parameters of an outline area of a target object is different from the parameters of other areas and the outline structure information of the target object can be kept under the condition of keeping the illumination information of a reference object much better. The object illumination migration method based on edge retaining can be widely applied and popularized to fields, such as interactive digital entertainment, television program production, art design and creation and the like.

Description

technical field [0001] The invention belongs to the fields of virtual reality and computer vision, in particular to an object illumination migration method based on an edge-preserving filter. Background technique [0002] The virtual scene generation technology based on image material is an important part of virtual reality technology. Since the scene and scene objects that make up the virtual scene often come from different materials, the lighting effects of the scene objects and the image scene may be quite different. However, the image virtual scene requires that each scene object has a consistent lighting effect, but the current image material Light fusion methods are difficult to meet the needs of virtual scenes. The problem of lighting migration of image scene objects, that is, how to transfer the lighting effects of reference objects in the target image scene to scene objects, and generate the lighting effects of scene objects under the lighting conditions of the tar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T15/50
Inventor 陈小武赵沁平金鑫陈萌萌吴洪宇
Owner BEIHANG UNIV
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