IMAGE PROCESSING APPARATUS FOR PROCESSING X-RAY IMAGE, RADIATION IMAGING SYSTEM, IMAGE PROCESSING METHOD, AND STORAGE MEDIUM

摘要

An image forming apparatus includes a conversion acquisition unit configured to acquire a gradation conversion characteristic based on an X-ray image captured by an X-ray sensor, a storage unit configured to store a pixel value range in which a signal-to-noise ratio is higher than a threshold value according to a characteristic of the X-ray sensor, a determination unit configured to determine whether a pixel value range in which gradation is widened according to the gradation conversion characteristic is included in the stored pixel value range, and a correction unit configured to correct the gradation conversion characteristic depending on a result of determination by the determination unit.

主权项

1. An image processing apparatus comprising:
an acquisition unit configured to acquire a gradation conversion characteristic; a storage unit configured to store a pixel value range corresponding to a dynamic range of an X-ray sensor; a determination unit configured to determine whether a pixel value range in which gradation is set by the gradation conversion characteristic is included in the stored pixel value range; and a correction unit configured to correct the gradation conversion characteristic depending on a result of determination by the determination unit.