Blind Equalization Algorithm for Variable Step-size Constant Module Medical CT Image
Jizhong Duan · Jisuanji gongcheng · 2011
A novel adaptive variable step-size constant module medical CT image blind equalization algorithm is proposed.The process of image restoration transformed by a linear operation is equivalent to one dimensional blind equalization.The constant modulus blind equalization cost function applied to medical CT image is founded.The kurtosis of error signal is utilized as step-size control factor to speed up the convergence and improve the performance of the algorithm.Computer simulations show that the algorithm improves peak signal to noise ratio,restoration effects and efficiency of operations,decreases state residual error,and speeds up the convergence.