MULTIPLE-POINT IMPULSE RESPONSES - CONTROLLED BLURRING AND RECOVERY

We present the results of controlled blurring of an image using a mult iple-point impulse response and thereafter recovering the original sce ne using a generalized inverse filter, The multiple-point impulse resp onse consists of delta-function impulses irregularly positioned within a prescribed area. This impulse response is shown to degrade the imag e beyond recognition. Excellent recoveries are obtained for pictorial and textural images. An important result is that the zeros of the tran sfer function occur at discrete locations and therefore have a negligi ble effect on the image recovery using the generalized inverse filter.