Improving image quality of x-ray in-line phase contrast imaging using an image restoration method

• DOI: 10.1364/oe.19.023460
• Publication Date: 2011-11-02T17:03:04Z
• Authors: Xue-jun Guo; Xiao-lin Liu; Chen Ni; Bo Liu; Shi-ming Huang; Mu Gu
• Keywords: Deblurring; Optical transfer function; Ringing artifacts; Ringing

For practical application of x-ray in-line phase contrast imaging, a high-quality image is essential for object perceptibility and quantitative imaging. The existing approach to improve quality limited by high cost physical limitations the acquisition hardware. A useful restoration algorithm based on fast wavelet transform proposed. It takes advantage degradation model extends modulation function (MTF) compensation from Fourier domain domain. modified evaluated through comparison with conventional MTF algorithm. Its deblurring property also characterized evaluation parameters quality. results demonstrate that robust, it can effectively restore both lost detail edge information while ringing artifacts are reduced.