Patent ID: 8086075
Filing Date: 2011-12-27
Classification: G06T,H04N

Abstract:
1. A method of image processing for image conversion by combining two or more source values in accordance with a mixing parameter to generate an output pixel value, the method comprising the steps of: calculating a first metric for a selected pixel at a selected pixel position in a current image field, the first metric being a difference between a directly preceding image field and a spatially interpolated version of the current image field at the selected pixel position; categorising, on the basis of the first metric, whether the selected pixel in the current image field provides either an indeterminate, unreliable or reliable basis for a determination of motion at the selected pixel position in the current image field, the selected pixel is categorised as indeterminate when, for all colour channels, the first metric is smaller than a standard deviation of pixel values in a test region surrounding the selected pixel in the current image field and a magnitude of a difference between the current image field and a previous corresponding image field at the selected pixel position is also smaller than the standard deviation of pixel values in the test region surrounding the selected pixel in the current image field; and adjusting the mixing parameter associated with the selected pixel depending upon the categorisation made.