Image processing method and radiographic apparatus using the same
AssigneeShimadzu Corporation
InventorWataru Takahashi
Life of this patent
Estimating the term…
Abstract
An image processing method is provided including the steps of generating a first band image through high-pass filter processing to a source image having an image of a subject falling thereon; generating a reduction image through reduction of the source image; performing low-pass filter processing to the reduction image to generate a low-pass image; magnifying the low-pass image to generate a magnified low-pass image; generating a second band image based on the source image, the first band image, and the magnified low-pass image; generating a third band image through performing of band-pass filter processing to the reduction image; and performing image processing to the source image with each of the band images.
Claims16
An image processing method for image processing a radiographic image with a subject falling thereon, comprising the steps of:
- generating a first band image through high-pass filter processing to a source image having an image of a subject falling thereon;
- generating a reduction image by reducing a size of the source image;
- performing low-pass filter processing to the reduction image to generate a low-pass image;
- magnifying the low-pass image to generate a magnified low-pass image;
- generating a second band image by subtracting the first band image and the magnified low-pass image from the source image;
- generating a third band image through performing of band-pass fitter processing to the reduction image;
- and
- performing image processing to the source image with each of the band images.
Radiographic apparatus for image processing a radiographic image with a subject falling thereon, comprising:
- a radiation source for emitting radiation;
- a radiation detecting device for detecting radiation;
- an image generation device for generating a source image having an image of a subject falling thereon in accordance with a detection signal outputted from the radiation detecting device;
- a first band image generation device for generating a first band image through high-pass filter processing to the source image;
- a source image reduction device for generating a reduction image by reducing a size of the source image;
- a low-pass filter processing device for performing low-pass filter processing to the reduction image to generate a low-pass image;
- an image magnifying device for magnifying the low-pass image to generate an magnified low-pass image;
- a second band image generation device for generating a second band image by subtracting the first band image and the magnified low-pass image from the source image:
- a third band image generation device for generating a third band image through performing of band-pass filter processing to the reduction image;
- and
- an image-processing device for performing image processing to the source image with each band image.
Dependencies are inferred from the claim text.