Patent ID: 8923589
Filing Date: 2014-12-30
Classification: G06T

Abstract:
1. An image processing apparatus for performing tomosynthesis from a plurality of projection data, the apparatus comprising: an obtaining unit configured to obtain projection images, from a digital detector, shot in different geometric arrangements of the digital detector and a radiation source for irradiating a two-dimensional area of the detector at one shot for obtaining each of the projection images, wherein each of the geometric arrangements is different in an angle between a line perpendicular to a detection plane of the digital detector and a reference axis of the radiation source; a reconstruction unit configured to reconstruct a tomogram by performing back projection processing on filtered projection images obtained by filtering the obtained projection images with a reconstruction filter, wherein said reconstruction unit is configured to weight the obtained projection images using coefficients each representing a three-dimensional positional relationship between the radiation source and each pixel in each of the obtained projection images, in the geometric arrangement for each of the obtained projection images.