PSF-based restoration with edge adaptive regularization for structured light measurement |
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Authors: | Yuzhang Chen Kecheng Yang |
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Institution: | Wuhan National Laboratory for Optoelectronics, College of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Rm. No. 303, S5 Bld., No. 1037, Luoyu Road, Hongshan District, Wuhan 430074, PR China |
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Abstract: | Edge information is important for measurement based on structured light. The presented effort puts forward an image restoration method with edge regularization for structured light measurement, which detects the edge of image, then updates the parameters of image degradation model and restores results in iteration. The diffraction limit of optics and nonlinear distortion of sensors are calculated as prior knowledge for semi-blind deconvolution. Blur metric is introduced for constraints of deconvolution iterations. Images before and after restoration are sent to shape recognition and automatic calibration modules for comparison. From experimental results we can conclude that the proposed approach can effectively enhance image quality and edge details, so that greater precision can be achieved. |
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