Laser & Optoelectronics Progress, Volume. 54, Issue 6, 61002(2017)
Estimation of Lighting Parameters for Uniform Texture Image
Estimating lighting direction from a single input image requires too many unknown parameters, whereas although the accurate estimated lighting parameters from multiple input images can be obtained, the complexity of the input data is increased. The method for lighting parameters estimation of the uniform texture images is proposed. The proposed algorithm only utilizes one input image for estimating the lighting directions. By detecting the largest direction of the brightness changes of the input image, the azimuth angle of the light source can be estimated. The slant angle is estimated by detecting the similarity between the input image and the random texture with virtual lighting conditions. 24 kinds of texture images (142 images) in Photex database are studied experimentally. Experimental results show that the proposed approach is effective and robust in estimating the lighting parameters for the uniform texture images.
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Sun Yujuan, Dong Junyu, Wang Zengfeng. Estimation of Lighting Parameters for Uniform Texture Image[J]. Laser & Optoelectronics Progress, 2017, 54(6): 61002
Category: Image Processing
Received: Jan. 10, 2017
Accepted: --
Published Online: Jun. 26, 2017
The Author Email: Yujuan Sun (syj_anne@163.com)