【摘要】 本文从计算机医用图象处理和识别的概念出发，通过以Ｘ射线法拍摄的冠状动脉造影图象，记叙了改善图象质量，测量血管直径，提取血管方法；解析了用空间频谱来改善图象质量；评价了在各种条件下血管直径的测试方法。同时还表明了用单纯的微分方法，适宜进行平均信息量滤波器的过程。更多还原

【Abstract】 Based on the recosnition and processing of computer image in medicine,the article shows the motheds dealing with improving image quality, measuring artery diametet and extracting artery. We have analysed the improvement of image quality from the application of sauce frequency spectrum, evalusted the measurements of artery diameter under various conditions. Meanwhile , we have explained the processing of average in formation content filter with only offerential operator mothed.更多还原