Xin'gang WANG, Junwei TIAN, Yalin YU, Qin WANG, Jie ZHANG. Edge contour extraction of infrared face image based on improved Canny algorithm[J]. Journal of Applied Optics, 2023, 44(1): 61
- Journal of Applied Optics
- Vol. 44, Issue 1, 61 (2023)
Fig. 1. Flow chart of edge contour extraction of infrared face image based on improved Canny algorithm
Fig. 2. Schematic of interpolation gradient direction in non-maximum suppression of original Canny algorithm
Fig. 3. Schematic of improved interpolation gradient direction in non-maximum suppression
Fig. 4. Comparison of image filtering processing effect
Fig. 5. Experimental results of edge contour extraction comparison from partial infrared face images
Fig. 6. Experimental results of edge contour extraction comparison from partial clipping infrared face images
Fig. 7. Comparison of quality coefficients of different edge detection algorithms for uncropped images
Fig. 8. Comparison of quality coefficients of different edge detection algorithms for clipping images
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Table 1. Edge detection process by Canny algorithm
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Table 2. PSNR comparison of test image filtering results
dB
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Table 3. SSIM comparison of test image filtering results
%
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