Patent ID: 8144965
Filing Date: 2012-03-27
Classification: G06K,G06T

Abstract:
1. An image processing apparatus configured to obtain a pixel value indicating a value of a boundary between a subject area and a background area of an image, the subject area being an area formed by radiation passing through a subject, the background area being an area directly exposed to the radiation, comprising: a storage unit configured to obtain, from the image, a feature value corresponding to the pixel value indicating the boundary between the subject area and the background area directly exposed to the radiation and store the obtained feature value as a template; a calculation unit configured to calculate a feature value corresponding to each of a plurality of pixel values from the image; a distance calculation unit configured to calculate a distance in a feature space between the feature value of the template and each of the feature values calculated by the calculation unit; and a selection unit configured to select a pixel value corresponding to a feature value with a smallest distance calculated by the distance calculation unit, the selected pixel value indicating the boundary between the subject area and the background area in the image.