Yongjie Ma, Mengli Chen. Shadow Removal Method Based on Improved Laplace-Gaussian Operator[J]. Laser & Optoelectronics Progress, 2020, 57(12): 121004
- Laser & Optoelectronics Progress
- Vol. 57, Issue 12, 121004 (2020)
Fig. 1. Moving target detection. (a) Original image; (b) foreground target area
Fig. 2. Improved log operator to extract edge contour. (a) Original image; (b) Dm; (c) Cm; (d) Em; (e) Sn; (f) En; (g) Et; (h) image after morphological operation
Fig. 3. Flow chart of proposed algorithm
Fig. 4. Process of proposed algorithm. (a) Original video frame; (b) ViBe algorithm detection; (c) log operator; (d) improved log operator; (e) proposed algorithm
Fig. 5. Comparison of shadow removal results of Campus_raw video frames. (a) Original video frame; (b) foreground detection; (c) Hist shadow removal method; (d) HSV shadow removal method; (e) proposed algorithm
Fig. 6. Comparison of shadow removal results of Highway I video frames. (a) Original video frame; (b) foreground detection; (c) Hist shadow removal method; (d) HSV shadow removal method; (e) log shadow removal method; (f) proposed algorithm
Fig. 7. Histograms of four algorithms in two groups of videos. (a) BER; (b) ACC
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Table 1. Comparison of results of different shadow elimination algorithmsunit: %
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Table 2. Comparison of processing speed of video between two groupsunit: frame·s-1
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