Comparison of Three Methods in Decreasing Noise of Coronary Angiography
Yuanguo Xie · Shengwu yixue gongcheng yu linchuang · 2002
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.