Human face light re-adding method based on total variation model

A total variation and model technology, applied in the field of face re-lighting, can solve problems such as wrong estimation results, limited information contained in a single image, and difficulty in dealing with lighting changes

Active Publication Date: 2013-02-20
SHENZHEN INST OF ADVANCED TECH
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Problems solved by technology

[0012] The existing face re-lighting technology still has many shortcomings: for example, many methods can only support a single input image, and the information contained in a single image is limited. When estimating illumination, quotient image, reflectance, etc. In the shaded areas of the image often get wrong est

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  • Human face light re-adding method based on total variation model
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  • Human face light re-adding method based on total variation model

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Embodiment Construction

[0058] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0059] With reference to shown in Fig. 1, the present invention discloses a kind of human face re-adding light method based on total variation model, and it comprises the following steps:

[0060] (1) Establish a multi-input logarithmic total variation model, which is used to simultaneously process single or multiple images of the same person in the same pose, and estimate the illumination component and reflection component of the input image;

[0061] For a given image sequence of the same face {I i}, i=1,..., N, according to the Lambertian (Lambert) light reflection model, they meet the followin...

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Abstract

The invention discloses a human face light re-adding method based on a total variation model, comprising the following steps of: (1) establishing a multi-input logarithm total variation model; (2) inputting a human face image series of the same person into the multi-input logarithm total variation model; (3) decomposing the human face image series into a reflection component and a light illumination component by the multi-input logarithm total variation model; (4) inputting a human face light illumination image in a human face database into the multi-input logarithm total variation model; (5) decomposing the human face light illumination image in the human face database into a reflection component and a light illumination component by the multi-input logarithm total variation model; (6) combining the light illumination component in the step (3) and the light illumination component in the step (5) into a new light illumination component; and (7) combining the reflection component in the step (3) and the light illumination component generated by the step (6). According to the human face light re-adding method based disclosed by the invention, a human face image under extreme change light illumination can be formed; and single-image or multi-image input is supported, and the light illumination component and the reflection component can be accurately estimated.

Description

technical field [0001] The present invention relates to the technical field of face re-adding, in particular to a face re-adding method based on a total variation model. Background technique [0002] The so-called face re-lighting technology is to process the input face image and synthesize the face image under the lighting conditions specified by the user. Face re-lighting technology has a wide range of applications in video surveillance, media processing, digital art, public security investigation and other fields. For example, in the face recognition system, the face image has the same lighting conditions by re-lighting the face image, thereby improving the accuracy of face recognition. In image synthesis, face re-lighting technology can be used to coordinate the lighting of the face and the surrounding scene, so as to achieve a more realistic synthesis effect. [0003] The existing face re-lighting technologies mainly fall into the following categories: [0004] 1) Me...

Claims

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Application Information

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IPC IPC(8): G06T5/50
Inventor 谢晓华陈宝权龚文勇汪云海
Owner SHENZHEN INST OF ADVANCED TECH
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