Patent application number | Description | Published |
20110019933 | INFORMATION PROCESSING APPARATUS, LINE NOISE REDUCTION PROCESSING METHOD, AND COMPUTER-READABLE STORAGE MEDIUM - An information processing apparatus performs first filter processing to combine pixels of an image along a predetermined direction. A line noise image is extracted by executing second filter processing for the processed image along a direction different from the predetermined direction. The extracted line noise image is subtracted from the image to acquire a line noise reduced image. | 01-27-2011 |
20110158550 | INFORMATION PROCESSING APPARATUS, PROCESSING METHOD, AND COMPUTER-READABLE STORAGE MEDIUM - An information processing apparatus comprises: a spatial filtering unit configured to perform spatial filtering in a frequency range based on a spatial frequency of an object for image data of a current frame; and a recursive filtering unit configured to perform recursive filtering by obtaining image data, which has been processed prior to the current frame, from a memory, multiplying the obtained image data by a coefficient α (α<1), adding the image data multiplied by the coefficient α to the image data of the current frame after the spatial filtering, and storing the image data after the addition in the memory. | 06-30-2011 |
20120128225 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND NON-TRANSITORY STORAGE MEDIUM - An image processing apparatus which processes an image obtained by tomosynthesis shooting by using a radiation source and a two-dimensional detector. The image processing apparatus includes an obtaining unit configured to obtain a plurality of projection data output from the two-dimensional detector upon tomosynthesis shooting; and a reconstruction unit configured to perform analytical reconstruction processing of a tomogram of a subject from the plurality of projection data obtained by tomosynthesis shooting without transforming the projection data into virtual projection data on a virtual CT detection plane virtually set to be perpendicular to a radiation center direction of the radiation source. | 05-24-2012 |
20130101233 | INFORMATION PROCESSING APPARATUS, LINE NOISE REDUCTION PROCESSING METHOD, AND COMPUTER-READABLE STORAGE MEDIUM - An information processing apparatus performs first filter processing to combine pixels of an image along a predetermined direction. A line noise image is extracted by executing second filter processing for the processed image along a direction different from the predetermined direction. The extracted line noise image is subtracted from the image to acquire a line noise reduced image. | 04-25-2013 |
20130156282 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD - An image processing apparatus for executing reconstruction of a tomographic image from a plurality of radiation projection images by using a reconstruction filter comprises an obtaining unit that obtains the radiation projection images obtained by detecting X-rays irradiated from a plurality of positions by a digital radiation detector; a reconstructing unit that executes the reconstructing process of the tomographic image on the basis of the obtained radiation projection images and the reconstruction filter; and a processing unit that reduces an influence on a first pixel value of a pixel obtained by the reconstruction filter, that influence having been exerted by a second pixel in which a difference between a pixel value of a target pixel of a filtering process in the radiation projection image and a pixel value of a peripheral pixel of the target pixel is larger than a predetermined threshold value in the reconstructing process. | 06-20-2013 |
20130322779 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND STORAGE MEDIUM - An information processing apparatus has a decomposition unit that decomposes an image into multiple frequency component images, a reduction unit that reduces linear noise included in the frequent component images, and a reconstruction unit that reconstructs the frequency component images with reduced linear noise. | 12-05-2013 |
20140153803 | IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - An image processing apparatus for reconstructing a tomographic image from a plurality of projection images acquires noise data for a plurality of projection images, respectively, acquires noise reconstruction data by executing reconstruction processing based on the acquired noise data, and reconstructs the tomographic image by executing the reconstruction processing based on the projection images and the noise reconstruction data. | 06-05-2014 |
20150317773 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND STORAGE MEDIUM - An information processing apparatus has a decomposition unit that decomposes an image into multiple frequency component images, a reduction unit that reduces linear noise included in the frequent component images, and a reconstruction unit that reconstructs the frequency component images with reduced linear noise. | 11-05-2015 |