Medical Scan Grayscale Image Noise Removal Of Mathematical Morphology Algorithm

Stereotactic radiosurgery is a new subject invented by Leksell in 1951, which is used for knub treatment. It standardization the target spot position by spatial orientation method first, and then flick the target area with high-energy radiation to destroy this area to achieve cure target. Using this instrument, the dose distribution in knub border is very sharp, so it is also named gamma knife.This thesis studies image denosing of film analysis software which is mating used with CT-robot gamma knife, which is developed by HangZhou Chinabest gamma medical apparatus invest corporation. This thesis mostly refer to digital image processing, mathematical morphology as well as the relation job of image processing.The research work and achievements of this thesis are as following:1. Introducing the development and the history of gamma knife in the world, and the characteristic and structure of CT- robot gamma knife. Then stating the meaning and content of this thesis.2. Introducing the routine denoising means of film scintigram, discuss the application of mathematical morphology in digital image processing, and propose textual means incorporating with some practical film.3. Proposing a fast and collateral algorithm of getting image border and area fill, shorten the time of calculating and treating process, as well as improving the effect. For approving the effect of this method, some experiments have been made, and those experiments show that this algorithm is simple and efficient.4. Introducing the select methods of gradation threshold and structure element, and proposing the further direction in the research of self adapted obtaining of gradation threshold.