Jiapeng Zhang, Fengqin Yu. Improved Image Measurement Edge Detection Based on Canny Operator[J]. Laser & Optoelectronics Progress, 2020, 57(24): 241024
- Laser & Optoelectronics Progress
- Vol. 57, Issue 24, 241024 (2020)
Fig. 1. Processing results of morphological area opening operation. (a) Before treatment; (b) after treatment
Fig. 2. Processing results of morphological area closure operation. (a) Before treatment; (b) after treatment
Fig. 3. Flowchart of improved Canny operator edge detection
Fig. 4. Change curves of number of edges with offset factor. (a) u1; (b) u2
Fig. 5. Edge detection effects of noisy images. (a) Original images; (b) traditional Canny algorithm; (c) Ref. [9]; (d) proposed algorithm
Fig. 6. Edge detection results of noisy images. (a) Traditional Canny algorithm; (b) Ref. [9]; (c) Ref. [5]; (d) proposed algorithm
Fig. 7. Industrial standard correction sheet
Fig. 8. Detection results of different algorithms
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Table 1. Running time of each algorithm
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Table 2. Analysis of detection results of different algorithms
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