【摘要】 目的　对冠状动脉造影图像降噪处理的 3种方法进行比较。方法　将冠状动脉造影图像数字化并输入计算机 ,然后再用中值滤波法、自适应滤波法和基于小波变换的降噪处理 3种方法分别处理同一图像 ,比较效果。结果　成功地运用了 3种方法对冠状动脉造影图像进行降噪处理 ,图像质量均有所提高。结论　自适应降噪处理和基于小波系数的降噪处理结果较好 ,但自适应降噪处理的速度要快更多还原

【Abstract】 Objective To compare the effects of three methods on decreasing noise on coronary angiography. Methods Coronary angiography images are digitalized and transferred into computer, then three methods ie. Median value filter, self adaptive filter and wavelet transformation based noise processing were applied to decrease the noise of image. The effects of the three methods were compared. Results The noise of coronary angiography images decreased by the three methods successfully, and the quality of images were all improved. Conclusion The effects of self adaptive filter and wavelet transformation based processing are better than that of median filter, but self adaptive filter processing is faster than that of wavelet transformation based method.更多还原