【摘 要】
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We consider Abel transform based density reconstruction for axially symmetric objects from a single radiograph by fan-beam x-rays.All contemporary methods assume that the density is piecewise constant
【机 构】
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The Chinese Univ.of Hong Kong Inst.of Applied Phy
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We consider Abel transform based density reconstruction for axially symmetric objects from a single radiograph by fan-beam x-rays.All contemporary methods assume that the density is piecewise constant or linear.This is quite a restrictive approximation.Our proposed model is based on high-order total variation regularization.Its main advantage is to reduce the staircase effect and enable the recovery of smoothly varying regions.We compare our model with other potential methods by giving numerical tests.
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