RADIOGRAPHIC IMAGE PROCESSING DEVICE, METHOD, AND RECORDING MEDIUM

摘要

A frequency decomposition unit performs frequency decomposition for a first radiographic image to acquire a plurality of band images. A scattered radiation removal unit calculates a scattered radiation component that is caused by a subject and is included in a second radiographic image which has a linear relationship with the amount of radiation, using the second radiographic image, and removes the scattered radiation component from the second radiographic image to acquire a scattered-radiation-removed radiographic image. A conversion function determination unit determines a conversion function for converting at least one of the band images according to the scattered radiation component included in the second radiographic image. A reconstruction unit converts the band image, using the conversion function, and generates a converted band image. The reconstruction unit reconstructs the scattered-radiation-removed radiographic image and the converted band image to acquire a processed radiographic image.

主权项

1. A radiographic image processing device comprising:
a frequency decomposition unit for performing frequency decomposition for a first radiographic image which is captured by irradiating a subject with radiation and acquiring a plurality of band images indicating a plurality of frequency components of the first radiographic image; a scattered radiation removal unit for calculating a scattered radiation component that is caused by the subject and is included in a second radiographic image of the subject which has a linear relationship with an amount of radiation, using the second radiographic image, and removing the scattered radiation component from the second radiographic image to acquire a scattered-radiation-removed radiographic image; a conversion function determination unit for determining a conversion function for converting at least one of the band images according to the scattered radiation component included in the second radiographic image; a conversion unit for converting the at least one band image, using the conversion function, and generating a converted band image; and a reconstruction unit for reconstructing the scattered-radiation-removed radiographic image and the converted band image to acquire a processed radiographic image.