DOI: 10.3390/app13158597 ISSN: 2076-3417
A Method for Correcting Endoscopic Images to Measure the Size of Defects on the Inner Surface of a Hole
Pengtao Shi, Zhengwei Tian, Qiang Sheng, Peng Liu- Fluid Flow and Transfer Processes
- Computer Science Applications
- Process Chemistry and Technology
- General Engineering
- Instrumentation
- General Materials Science
A method is proposed for correcting endoscopic images to enable the measurement of inner surface defects in holes. The distortion is decomposed into circumferential and axial components based on imaging principles, and geometric constraints are added to simplify the correction model parameters to a central coordinate and nonlinear parameter, improving accuracy at the edge of endoscopic images. Experimental results demonstrate good universality with an average error rate of 5.35% in defect measurements, making it applicable for automatic and intelligent detection of hole parts and pipelines.