Acta Optica Sinica, Volume. 38, Issue 11, 1112005(2018)
Highlight Removal of High Reflectivity Workpiece and Vision Measurement Based on Polarization Information
Fig. 2. Image acquisition system for vision measurement based on polarization device
Fig. 4. White balance processing of image and corresponding histogram features. (a) Color image; (b) histogram of color image; (c) white balanced image; (d) histogram of white balanced image
Fig. 5. Flowchart of mean-shift segmentation algorithm based on dark channel images
Fig. 6. Images acquired under different polarization angles, image with highlight components and pixel luminance distribution in two-color reflection model
Fig. 7. BP neural network model for highlight removal based on polarization information
Fig. 9. Effect of image highlight removal based on polarization information. (a) Image acquired under optimal polarization angle; (b) pixel luminance distribution corresponding to (a); (c) image after highlight removal; (d) pixel luminance distribution corresponding to (c)
Fig. 10. Detail comparison of SIFT feature extraction. (a) SIFT feature extraction of image under optimal polarization angle; (b) SIFT feature extraction of image under optimal polarization angle after treatment by RANSAC algorithm; (c) SIFT feature extraction of image after highlight removal; (d) SIFT feature extraction of image after highlight removal and treatment by RANSAC algorithm
Fig. 11. Detail comparison of SURF feature extraction. (a) SURF feature extraction of image under optimal polarization angle; (b) SURF feature extraction of image under optimal polarization angle after treatment by RANSAC algorithm; (c) SURF feature extraction of image after highlight removal; (d) SURF feature extraction of image after highlight removal and treatment by RANSAC algorithm
Fig. 12. Boundary contours extracted under different conditions. (a) After highlight removal; (b) under optimal polarization angle
Fig. 13. Three-dimensional space coordinates of feature points of experimental object’s contour
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Zhenmin Zhu, Shuang Pei, Shiming Chen, Fumin Zhang. Highlight Removal of High Reflectivity Workpiece and Vision Measurement Based on Polarization Information[J]. Acta Optica Sinica, 2018, 38(11): 1112005
Category: Instrumentation, Measurement and Metrology
Received: May. 7, 2018
Accepted: Jun. 19, 2018
Published Online: May. 9, 2019
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