Zhengping Wu, Zhanwen Ma, Hua Yan, Zhaomeng Zhang, Fan Yin. Local Threshold Segmentation Method Based on Multi-Direction Grayscale Wave for Image[J]. Laser & Optoelectronics Progress, 2020, 57(6): 061016
- Laser & Optoelectronics Progress
- Vol. 57, Issue 6, 061016 (2020)
Fig. 1. Rice gay image
Fig. 2. Three-dimension topographic image of rice
Fig. 3. One-direction grayscale wave curve
Fig. 4. Grayscale wave curve
Fig. 5. Local threshold segmentation curve of rice image. (a) Line 30 of the grayscale wave curve; (b) column 210 of the grayscale wave curve
Fig. 6. Four-direction one-dimension threshold segmentation of rice image. (a) Horizontal direction sub-image; (b) vertical direction sub-image; (c) left diagonal directional sub-image; (d) right diagonal directional sub-image; (e) segmentation results after an and operation
Fig. 7. Experimental results of various methods. (a)Raw images; (b) 2DOtsu method; (c) 2DTE method; (d) Niblack method; (e) our method
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Table 1. Running time of different algorithms unit: s
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