Fan Zhang, Xiangting Chen, Xinhong Zhang. Algorithm of Automatic Detection of Blood Vessel Stenosis with Sub-Pixel Level of Digital Subtraction Angiography[J]. Laser & Optoelectronics Progress, 2018, 55(4): 041101
- Laser & Optoelectronics Progress
- Vol. 55, Issue 4, 041101 (2018)
Fig. 1. Image enhancement effects of adaptive multi-scale filtering. (a) Original image; (b) image after multi-scale self-adaptive filtering
Fig. 2. Extracted central axis of blood vessel. (a) Blood vessel after multi-scale self-adaptive filtering; (b) central axis of blood vessel
Fig. 3. Sketch of sub-pixel edge detection. (a) Image of ideal step edge; (b) image of ideal step edge after rotation
Fig. 4. Sub-pixel edge extraction and stenosis detection based on Zernike moments. (a) Extraction of sub-pixel edge; (b) schematic of diameter measurement based on dynamical ball
Fig. 5. Detection results of proposed method
Fig. 6. Comparison of experimental results
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Table 1. Stenosis experimental and contrast results of DSA images (stenosis rate of NASCET)%
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