摘要:
An image processing apparatus or an image processing method is arranged to input image data obtained by an image pickup device and an image pickup parameter of the image pickup device used in obtaining the image data, to make a comparison between the image pickup parameter for a target image and the image pickup parameter for another image, and to decide whether or not the target image differs from the other image, according to a result of the comparison.
摘要:
A control apparatus for controlling a multi radiation generating apparatus having a plurality of radiation generating devices which irradiate a two-dimensional sensor with radiation sets the intensity of radiation with which the plurality of radiation generating devices irradiate the two-dimensional sensor based on information about a part or physique of a patient, which is input by an input device.
摘要:
A plurality of pieces of image data processed by a preprocessed circuit are sequentially received and at least one representative image is selected from among the plurality of pieces of image data by a representative image selection circuit. For example, one piece of image data out of every 250 pieces of image data is selected from among 1000 pieces of acquired image data to select four pieces of image data as representative images. An irradiated area extraction circuit extracts X-ray irradiated areas of the representative images. A reconstruction area determination circuit determines a CT reconstruction area on the basis of the X-ray irradiated areas. The reconstruction circuit reconstructs CT images from all or part of the acquired image data on the basis of the CT reconstruction area.
摘要:
A radiation imaging apparatus comprises a radiation detection unit that detects radiation, an instruction unit that issues a radiation-imaging start instruction, and a setting unit to set an irradiation delay period that extends between the issuance of an imaging start instruction and the time irradiation begins. A first acquisition unit acquires a plurality of dark current images during the set irradiation delay period, and a second acquires a radiation image of the object after the end of the set irradiation delay period. A correction data generation unit generate correction data for the acquired radiation image, based on the dark current images, and a correction unit executes dark current correction processing of the acquired radiation image using the correction data.
摘要:
With reference to any one of a plurality of images, the other images are moved by a distance greater than or equal to one pixel width in a main scanning direction and/or a sub-scanning direction. Then, the plurality of images are combined to form a composite image.
摘要:
In a radiation image processing apparatus and method, body movement information of a subject to be inspected is extracted during CT scanning. It is then determined whether or not a repeat radiograph is required based on the body movement information of the subject. If it is determined that a repeat radiograph is not required, a CT image is reconstructed from projection images. If it is determined that a repeat radiograph is required, the need for a repeat radiograph is instructed.
摘要:
A mountainous or valley-shaped curved part 13 is provided in a part of a footstep guide rail 3 for guiding a movement of footstep rollers 5 linked by a footstep chain 7, the part being positioned in the vicinity of a drive sprocket 9. Consequently, owing to meshing of the footstep rollers 5 with the drive sprocket 9, an unevenness in velocity of the footstep rollers 5 is absorbed by the curved part 13, so that a moving velocity of the footstep rollers 5 moving on the downstream of the curved part 13 is maintained constantly, suppressing vibrating of the footsteps 4.
摘要:
It is an object to enable an irradiation field to be accurately extracted. An irradiation field extracting method of extracting an irradiation field from a radiation image is constructed by a step of extracting characteristic points in the radiation image by using geometric patterns for detecting an irradiation field edge and a step of detecting an edge portion of the irradiation field on the basis of the characteristic points.
摘要:
An object of this invention is to efficiently attain noise removal. In order to achieve the object, the discrete wavelet transforms of an input image are computed to output wavelet coefficients of respective subbands (S301). Appropriate threshold values are respectively set for subbands HL, LH, and HH indicating high-frequency components (S302a, S302b, S302c). The wavelet coefficients of the subbands HL, LH, and HH then undergo threshold value processes using the set threshold values for the respective subbands (S303a, S303b, S303c). Pixels to be processed in a coefficient conversion process are determined based on the threshold value processing results of the respective subbands (S304). The wavelet coefficients of the respective subbands corresponding to the pixels to be processed determined in step S304 undergo coefficient conversion (S305), and the converted transformation coefficients undergo inverse discrete wavelet transformation, thus reconstructing and outputting a noise-removed image (S306).
摘要:
When stereoscopic video data is distributed through a network, some terminal cannot process the distributed stereoscopic video data because the format of the data does not correspond to the terminal. Likewise, when video data are input from a plurality of types of cameras with different stereoscopic video data formats, data of an incompatible format cannot be processed. In order to prevent this problem, there is provided a stereoscopic video apparatus which inputs stereoscopic video data, converts the format of the input stereoscopic video data into a format suitable to output operation, and outputs the converted stereoscopic video data to a network.