Abstract: A system and method are provided for processing visual imagery. The method may include the operations of collecting an image of medical radiology performed on a patient. An intensity gap analysis can be applied to the reconstructed image to determine partitioning values for the image. A further operation is dividing the image into sub-images, where each sub-image contains image values between adjacent thresholds of the partitioning values. Then the undefined image values in each sub-image may be set to a specified value interior to the partition values range for the sub-image. An additional operation is applying a linear filter to each sub-image separately. Finally, the sub-images are recombined only using the pixels with non-zero characteristic function values.