Figure 5From: A compressed sensing-based iterative algorithm for CT reconstruction and its possible application to phase contrast imaging Sensing matrix model. f 0 , f 1 , f 2 , and f 3 : four pixels. φ 10 , φ 11 , and φ 13 : three weight coefficients. l 1 is one X-ray, and g 1 is one projection value.Back to article page