Canon Kabushiki Kaisha

Naoto Takahashi

Tadashi Eguchi

Keiji Tsuchiya

Tomoyuki Takada

Makoto Umehara

Wataru Tachiwa

Hitoshi Asai

Hiroyuki Shinbata

Naoki Umemura

Hirohiko Katayama

Hiroyuki Shibata

An image processing apparatus corrects a target pixel in a radiation image using a radiation detector including a pixel region in which pixels detect radiation in a matrix. The apparatus includes a memory coupled to a processor. Instructions in the memory cause the processor to function as a pixel determination unit to determine a reference pixel from among four pixels vertically and horizontally adjacent to the correction target pixel in the radiation image. A pixel correcting unit corrects the correction target pixel in the radiation image using the reference pixel. The radiation detector obtains the radiation image by repeating reading out a charge accumulated in the pixels of one of an odd column and an even column of a first row and reading out a charge accumulated in the pixels of the other of the odd column and the even column of a second row adjacent to the first row.

Image processing apparatus, radiation imaging system, image processing method, and computer-readable medium that correct a target pixel in a radiation image

A radiation imaging apparatus comprises a radiation detector including a plurality of pixels configured to convert radiation into electrical signals, one or more of the plurality of pixels being configured to operate as a detecting pixel for detecting irradiation amounts of the radiation. The radiation imaging apparatus reduces a frequency component relating to grid stripes produced by a scattering ray removing grid included in detection values for the irradiation amounts of the radiation obtained from the plurality of detecting pixels forming a detecting pixel group.

Scatter grid frequency correction in a radiation imaging apparatus, method of controlling same, radiation imaging system, and storage medium

Provided are a radiographic system and a radiographic method that enable appropriate correction of an area including an imaged structure in the case in which radiation detection apparatuses of different inner structures exist together and consequently achieve improvement of the image quality of a composite image. The radiographic system according to the present invention includes an image corrector that corrects an area of a composite image in which the structure of a radiation detection apparatus is imaged. The image corrector sets a correction method in accordance with a characteristic of a structural shadow of the radiation detection apparatus imaged in the composite image.

Radiographic system and radiographic method

A power transmitting apparatus that transmits power to a power receiving apparatus executes intermittent wireless transmission of power. The power transmitting apparatus operates according to one of a first power transmitting method including detecting a signal load-modulated by the power receiving apparatus using an ID in response to the transmitted power during the intermittent transmission and a second power transmitting method including transmitting the power having modulated the power according to an ID determined in advance so that the power receiving apparatus detects the ID determined in advance.

Power transmitting apparatus, power receiving apparatus, control methods thereof, and program

A radiographic imaging system and imaging method that improves image quality of a combined image including a defective region caused by a structural object of a radiation detection apparatus are provided. The radiographic imaging system, which includes a plurality of radiation detection apparatuses that detect radiation and a combining processing unit that combines a plurality of radiographic images acquired from the plurality of radiation detection apparatuses to generate a combined image, corrects a pixel value of a correction target pixel of a region in which a structural object of a radiation detection apparatus is included in the combined image using a pixel value of a pixel in a range predetermined with reference to the correction target pixel of a region in which the structural object is not included in the combined image.

Radiographic imaging system and radiographic imaging method

In a case where noise reduction processing is performed on an image acquired by radiography, the noise reduction processing is prevented from being influenced by other image processing performed in advance. A structure determination unit determines a structure present in a target pixel of a preprocessed captured image. A first image processing unit performs a predetermined image processing based on a determination result of the structure present in the target pixel of the preprocessed captured image. A second image processing unit performs image processing different from the predetermined image processing on an image acquired through the predetermined image processing performed by the first image processing unit.

Image processing apparatus, image processing method, and medium

A power transmission apparatus transmitting power to a power reception apparatus and communicating with the power reception apparatus by applying a communication method which allows communication in a wider communication range than a power transmittable range includes a reception unit which receives a notification signal for notifying the existence of a power reception apparatus by applying the communication method, an instruction unit which instructs a power reception apparatus having transmitted the notification signal to change a load impedance consuming received power, a determination unit which determines that the source power reception apparatus has changed the load impedance in accordance with the instruction, and a wireless power transfer unit which wirelessly transfers power to the power reception apparatus if the determination unit determines that the source power reception apparatus has changed the load impedance in accordance with the instruction.

Power transmission apparatus, control method for power transmission apparatus, and program

A power reception apparatus includes a power reception unit configured to receive power wirelessly supplied from a power transmission apparatus, a voltage conversion unit configured to convert the voltage of the power receive by the power reception unit to a voltage with a particular value, a load unit configured to operate with an output from the voltage conversion unit, a first detection unit configured to detect a voltage or a current input to the voltage conversion unit, and a second detection unit configured to detect consumption power of the load unit, a determination unit configured to make a determination, based on a result of a detection performed by the first detection unit and a result of a detection performed by the second detection unit, as to whether there exists a foreign object, which is not a target object to which power is to be transmitted, in a power transmission service area covered by the power transmission apparatus.

Power reception apparatus, determination method, and program

A power transmission apparatus that wirelessly transmits power includes a detection unit that detects an object, an authentication unit that performs authentication processing including a determination whether the object detected by the detection unit is a power reception apparatus, a power transmission unit that wirelessly transmits power according to a result of the authentication processing performed by the authentication unit, a reception unit that receives a power transmission stop request, and a control unit that stops power transmission according to reception of the power transmission stop request and controls the authentication unit so that the authentication processing is not performed in a period from when the power transmission is stopped to when another object different from the object determined to be a power reception apparatus is detected by the detection unit.

Power transmission apparatus, control method of power transmission apparatus, and storage medium

A radiation imaging apparatus acquires a radiation image from radiation detected by a radiation detection unit, corrects a first pixel that is a correction target in the radiation image by referring to a second pixel other than the first pixel, calculates an evaluation value that evaluates an increase in a noise level caused by correcting the first pixel, and performs processing of reducing the noise level for the first pixel after the correction based on the calculated evaluation value.

Radiation imaging apparatus and method of controlling the same, radiation image processing apparatus and method thereof, and computer-readable storage medium

A power transmitting apparatus that transmits electric power to a power receiving apparatus performs wireless communication with the power receiving apparatus, transmits at least one type of electric power having a power value specific to the power transmitting apparatus, and performs a determination as to whether or not to transmit electric power required by the power receiving apparatus to the power receiving apparatus. The power transmitting apparatus receives at least one type of converted value converted from the electric power received by the power receiving apparatus, and performs the determination based on the converted value and the specific power value.

Power transmitting apparatus, power receiving apparatus, control methods therefor, programs, and storage medium

A wireless electric power transmission apparatus includes a communication unit configured to carry out communication for wireless electric power transmission, a restriction unit configured to restrict the wireless electric power transmission in a case in which the communication unit is unable to communicate with an object disposed within a range in which the wireless electric power transmission apparatus can transmit the wireless electric power, and a control unit configured to start the wireless electric power transmission in response to a user instruction in a case in which the communication unit is unable to communicate with the object disposed within the range in which the wireless electric power transmission apparatus can transmit wireless electric power.

Growing community of inventors

Saitama, Japan

Naoto Takahashi