The Study On Technology Of Image Mosaic For Borehole Wall Based On Cone Reflection

Along with the rapid development of scientific technology,the methods of measuring have been innovated continually in today’s society. The measurement system of borehole also becomes a central researching issue because of its intuition and accuracy. This system has an important and widely used in the field of geological、engineering investigations、medical and military reconnaissance. So, the study of this system has great significance.The traditional systems use its camera which can be rotated to get images of borehole, the obtained images are spliced into a panoramic image by a series of image processing technologies. Although the study of the system develop quickly in domestic currently, the system based on the reflection of taper’s surface has been studied rarely. This is why the paper has an important meaning for the scope of the research.By the combined of analysis and simulation, the achievement and significance of the paper are as follows:(1)A new system has been proposed by the study of the traditional one. The new model not only make up the defects of the traditional one, such as large amount of computation, but also meet the needs of engineering and have a certain value of engineering.(2)The paper has analyzed the expansion algorithm of the annulus image through the study of annulus images and verified the scientific and accuracy of the algorithm by simulations, which important to the research of annulus images.(3)Through the study of image stitching,an auto-set of threshold algorithm based on Harris corner detected has been proposed. The new innovative algorithm can improves the efficiency of corner detected,which is proved by the simulation.(4)By the simulations, the new model and the spliced image has been proved to has a good effect, at the same time,the expansion algorithm of annulus image has been proved to be correct.