Canon Kabushiki Kaisha

Keiji Tsuchiya

Naoto Takahashi

Osamu Tsujii

Masahiko Okunuki

Hiroyuki Shinbata

Hirokazu Tanaka

Hiroto Kitai

Hiroyuki Shibata

An image processing apparatus and method including executing high-pass filtering in a column direction on the pixel values of original image data read from a flat panel detector to obtain first image data, and subtracting a value obtained by converting each of the pixel values of the first image data in accordance with an absolute value of a statistic calculated from pixel values in the same pixel row of the first image data from the value of a corresponding pixel of the original image data to obtain processed image data.

Apparatus and method for image processing and storage medium

A movable radiographing apparatus has a wireless communication function and includes a radiation generating unit including a radiation source, an arm portion configured to support the radiation generating unit, a support pillar configured to support the arm portion, and a moving unit configured to support the support pillar and including a GUI to be operated by the user. The movable radiographing apparatus further includes a connector unit to and from which an external antenna for wireless communication is attachable and detachable, wherein the connector unit is provided on at least one of the radiation generating unit, the arm portion, the support pillar, and the moving unit.

Movable radiographing apparatus and movable radiation generating apparatus having wireless communication

A radiographic imaging apparatus includes: a radiation detection array configured to store charges to acquire an image signal; an output unit configured to output radiation image data based on the image signal to an external apparatus; a detection unit configured to detect an imaging mode changeover instruction; and a control unit configured to, when the detection unit detects an imaging mode changeover instruction during one unit of imaging processing including the charge storage and the charge-based radiation image data output to an external apparatus, control whether the imaging processing is to be interrupted, based on an operating state of the radiographic imaging apparatus.

Imaging control apparatus, radiographic imaging system, and imaging control method

An X-ray imaging apparatus which obtains an X-ray image, the apparatus includes: an imaging unit including a plurality of detecting elements adapted to convert X-rays generated by an X-ray generating apparatus which outputs or stops X-rays in accordance with an operation instruction into an image signal; and an obtaining unit adapted to obtain an operation start timing of the X-ray generating apparatus based on an image signal output from the imaging unit and obtain a difference between a timing of an operation instruction to the X-ray generating apparatus and the operation start timing.

X-ray imaging apparatus and measurement method

An imaging control apparatus for controlling an imaging system capable of performing a plurality of imaging modes for detecting light or radiation to acquire an image includes a detection unit configured to detect that an instruction for executing a second imaging mode is generated during execution of a first imaging mode, a determination unit configured to determine a wait time according to a state of the imaging system when the instruction is received, and a control unit configured to perform control for instructing the imaging system to wait at least for the determined wait time before the transition to the second imaging mode, and control for instructing the imaging system to perform mode transition processing for switching from the first imaging mode to the second imaging mode.

An X-ray imaging apparatus includes a multi X-ray generating unit in which multiple X-ray foci are disposed in two-dimensional form at a predetermined pitch in a first direction, and a slit unit having multiple slit members each disposed opposite to its respective X-ray focus. Each slit member has multiple slits arranged in the first direction, and each of the slits forms a slice-formed X-ray beam whose lengthwise direction is a second direction that is different from the first direction. The two-dimensional detection unit detects the X-ray intensity of the formed X-ray beams at the detection surface. The X-ray imaging apparatus executes X-ray imaging at multiple positions while moving the multi X-ray generating unit and the slit unit in the first direction by the amount of the predetermined pitch, while keeping the relative positional relationship therebetween, and reconstructs an X-ray image based on the obtained X-ray intensity.

X-ray imaging apparatus and control method thereof

A photographing control apparatus that controls a sensor for accumulating and reading out electric charge in order to obtain an image, includes: a deciding unit adapted to decide a frame period showing an image photographing interval, based on an input of an input unit; a determining unit adapted to determine, based on the frame period decided by the deciding unit, whether accumulation and reading out of electric charge not for use in an image generating process is set in the frame period; and a control unit adapted to control the sensor based on the determination by the determining unit.

Photographing control apparatus and method

Processing for improving the contrast of an image of interest is executed by an image processing circuit in an X-ray photography apparatus. The image is decomposed into coefficient values of a plurality of frequency bands by a frequency-component decomposition circuit to obtain coefficients of each and every frequency band. A coefficient conversion circuit converts coefficient values with regard to at least one frequency band of the plurality of frequency bands in such a manner that a frequency distribution of coefficient values of every frequency band will become a prescribed frequency distribution. A restoration circuit generates an image using the coefficient values obtained by the conversion performed by the coefficient conversion circuit.

Image processing apparatus and method

A radiography system comprising a detector for detecting radiation generated by a radiation generation device, and a detector controller for initializing the detector at a predetermined timing, and controlling the detector, and taking a radiation image on the basis of the radiation detected by the detector wherein the detector controller comprises storage for acquiring and storing a time period from when initialization of the detector starts until a radiation irradiation request signal is received and instructions for, when the radiation irradiation request signal is received during an initialization process of the detector, instructing to execute a wait process for the stored time period after the initialization process, and upon completion of the wait process, a radiography permission signal is sent to the radiation generation device.

Image sensing apparatus and image sensing method, X-ray photographing system and its control method

For performing imaging with a high-frame rate, a control apparatus determines the time where at least one electrical charge of a sensor is read based on information about the position of an irradiation area of the sensor, the irradiation area being irradiated with a radiation, so that the time period where at least one electrical charge of a non-irradiation area of the sensor is read, the non-irradiation area being irradiated with no radiation, overlaps the time period where irradiation with the radiation is performed and the time period where at least one electrical charge of the irradiation area of the sensor is read does not overlap the radiation-irradiation-time period.

Imaging-control apparatus and method of controlling same

Image processing apparatus and method for improving the contract of an image

An information recording method in which a recording start position of a data section in which file data of a recording medium such as an optical card has been recorded is calculated on the basis of a directory for managing a file of the information recording medium recorded in a directory section and, when the data has been recorded at the calculated recording start position, a retry operation to judge whether the data has been recorded at the next recording position or not is repeated a predetermined number of times, thereby retrieving the final recording position of the data section. When the final recording position of the data section cannot be detected even if the retry operation was repeated the predetermined number of times, the information indicative of the recording position at which the retry operation was finally executed is recorded to the directory section. When performing the retry operation again, the retry operation is executed from the recording position at which the retry operation was finally performed on the basis of the information indicative of the recording position at which the retry operation was finally executed.

Growing community of inventors

Kawasaki, Japan

Keiji Tsuchiya