Hongpu Liu, Mengjing Zheng, Xiangdan Hou, Bocen Li, Jiazhuo Du. Enhancement Algorithm of Fractional Differential Medical Images Based on Local Binary Pattern Variance[J]. Laser & Optoelectronics Progress, 2019, 56(9): 091006
- Laser & Optoelectronics Progress
- Vol. 56, Issue 9, 091006 (2019)
Fig. 1. LBP mode
Fig. 2. Circular neighborhood system
Fig. 3. Diagram of unified LBP mode when P=8
Fig. 4. Mode and mode frequency map of textured image
Fig. 5. Angle and mode frequency map of textured image
Fig. 6. Eight directions of LBPV
Fig. 7. Fractional masks for eight directions. (a) 0°; (b) 45°; (c) 90°; (d) 135°; (e) 180°; (f) 225°; (g) 270°; (h) 315°
Fig. 8. Original images and enhanced images. (a) Original images; (b) enhanced images of Fig. 8(a); (c) original images; (d) enhanced images of Fig. 8(c)
Fig. 9. Enhanced images of humeral head and its local images with different methods. (a) Original images; (b) method in Ref. [5]; (c) method in Ref. [6]; (d) method in Ref. [9]; (e) proposed method
Fig. 10. Enhanced images of tibia and its local images with different methods. (a) Original images; (b) method in Ref. [5]; (c) method in Ref. [6]; (d) method in Ref. [9]; (e) proposed method
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Table 1. Evaluation parameters of each image in Fig. 8
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Table 2. Evaluation parameters of each image in Fig. 9
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Table 3. Evaluation parameters of each image in Fig. 10
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