Quantitative angiography using mean field annealing

The vessels in the cineangiogram are degraded by the nonuniform point spread function (PSF) and nonstationary noise from the imaging system. The authors present a new method for vessel size measurement which does deblurring, edge-preserving smoothing, and edge enhancement in one process. The method is a version of an adaptive edge-preserving smoothing technique, adaptive mean field annealing (AMFA), extended to the blur problem. AMFA with a deblurring technique is an iterative image restoration technique for the restoration of noisy blurred images. With the progress of annealing, the restored image evolves from the maximum likelihood solution to the annealed maximum a posteriori solution and the restored edges are enhanced. The efficacy of the method is demonstrated with the results of the synthetic images, phantom images, and real cineangiographic images.<
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