Veiling glare deconvolution of images produced by X-ray image intensifiers

A theoretical model based on energy diffusion calculations has been used to explain veiling glare. According to this theoretical model veiling glare is characterised by two parameters the mean scattering length and the mean scattering percentage and can be determined from a series of contrast ratio measurements. Once the form of the veiling glare PSF is known it is possible to study the enhancement of digital fluorograms by veiling glare deconvolution. A filter was used to deconvolve an edge profile in one dimension. Analysis of the edge profile indicated that the filter function had been effective in unblurring the edge. A two dimensional deconvolution algorithm was applied along the central section of a lead disk and found to reduce the effects of veiling glare