A Study on Denoising for Images Captured by Super Thin Fiber scope

Abstract

Different from endoscope such as gastroscope attached CCD camera at the tip, fiberscope can form an image outside body, which makes easy to thin the insertion part of it. Therefore, fiberscope is expected to be a new imaging device that increases the possibility supporting diagnosis and operation in medical front. Optical fiber used in fiberscope isolates light within each fiver by covering the material called “core” showing high refractive index with the material called “clad” showing low refractive index. Fiberscope is constructed by bundling a number of this optical fiber. However, it is well-known that the quality of images captured by fiberscope is seriously deteriorated due to honey-comb structure noise caused by the clad which does not contribute to transmit any signal captured. In this work, we study on denoising for images captured by a super-thin fiberscope consisted of the limited number of fibers about 5,000 fibers to improve the quality of images captured by it to the level necessary in diagnosis and operation.