Canon Kabushiki Kaisha

Shutaro Kunieda

Takeshi Ogawa

Tomoyuki Yagi

Takayuki Hara

Zenya Kawaguchi

An apparatus appropriately corrects a defective pixel of a radiation image in a radiation imaging apparatus having a function of AEC, both when performing AEC and when not performing AEC, the apparatus selecting a defect map from a first image defect map in which a defective pixel (line), which is a group of defective linear pixels, is not included in a region of interest for detecting the dose of radiation in a pixel region in order to perform an AEC pertaining to stopping of irradiation of radiation, and a second image defect map in which a defective pixel (line) which is a group of defective linear pixels, is included in a region of interest, depending on whether or not an AEC is performed, and corrects the radiation image using the selected defect map.

Radiation imaging apparatus, its control method, and medium

Provided is a system capable of preventing inappropriate radiation stop control from being performed. A radiation imaging apparatus configured to perform imaging by radiation includes: an imaging unit including a dose signal output pixel arranged to output an electric signal based on a dose of the radiation that has entered the dose signal output pixel; and a processing unit configured to perform processing of comparing an integration value of the electric signal output from the dose signal output pixel included in the imaging unit to a threshold value during a period in which the radiation is not applied to the imaging unit.

Radiation imaging apparatus and method of controlling the same, and radiation imaging system

An image capturing apparatus comprises: an image sensor configured to output image data captured at any of two or more sensitivities; and a memory storing instructions which cause the apparatus to function as: a control unit configured to control a compression rate for compressing the outputted image data; a compression unit configured to compress the outputted image data at the compression rate; a decompression unit configured to decompress the compressed image data; and an application unit configured to apply a gain amount to the decompressed image data based on the two or more sensitivities, wherein the control unit controls the compression rate so that a compression rate in a case where a first gain amount is applied to is less than a compression rate in a case where a second gain amount is applied to.

Image capturing apparatus operable to store captured image data in image memory, method of controlling same, and storage medium

An image processing apparatus generates a plurality of frequency range images by separating an image based on an obtained image signal into predetermined frequency ranges. The apparatus applies predetermined image processing to the plurality of frequency range images, and generates an image for saving based on the plurality of images. The apparatus generates an image for display based on some of the plurality of frequency range images to which the predetermined image processing has been applied.

Image processing apparatus, image capturing apparatus, control method and recording medium

A focus detection apparatus performs focus detection by a phase difference method using an image pickup element including first and second pixels, the focus detection apparatus includes a correlation data calculator which calculates correlation data between pixel data obtained from the first pixels and the second pixels in ranges of image data, a detector which detects a saturated pixel having a level of at least a predetermined value in each of the ranges, an adding processor which performs an addition processing of the correlation data calculated in each of the ranges based on a detection result, and a defocus amount calculator which calculates a defocus amount based on a result of the addition processing, and the adding processor performs the addition processing using correlation data obtained from a first range in which the number of the saturated pixels is less than a predetermined number.

Focus detection apparatus, image pickup apparatus, image pickup system, focus detection method, and non-transitory computer-readable storage medium

An image processing apparatus generates an image appended with additional effective pixels by executing appending processing for appending additional effective pixels by extending input image data in a scanning direction using pixels at terminal ends of the input image data in the scanning direction. The image processing apparatus generates image data of a second hierarchy obtained by reducing the input image data by applying filtering to the generated image appended with the additional effective pixels, and generates image data of a third hierarchy by applying filtering to the image data of the second hierarchy.

Image processing apparatus and method

An image processing apparatus can execute appropriate image processing while preventing increase in a capacity of a memory for storing a plurality of pieces of image data of different frequency bands. The image processing apparatus stores first image data having the highest frequency among the plurality of pieces of image data of different frequency bands in a state in which each pixel of the first image data includes a color component signal of any of a plurality of colors, on the memory, and further stores second image data and third image data whose frequency bands are lower than that of the first image data on the memory, in a state in which a part of or all pixels of the second and the third image data have color component signals of a plurality of colors.

Apparatus and method for image processing using color image data and low frequency image data

In response to an input instruction to start a still image capturing operation when a moving image capturing operation is being performed, an imaging apparatus controls the still image capturing operation to record a still image file on a recording medium, interrupts the moving image capturing operation, generates a moving image in which an interframe-compressed image whose difference information is zero is inserted as at least one of images to be substituted for a moving image corresponding to a time period for which the moving image capturing operation is interrupted, and records the generated moving image on the recording medium.

Imaging apparatus and control method for reducing a load of writing image data on a recording medium

A first generation unit generates a RAW image reduced in the horizontal direction from a RAW image including pixels each having single-color signal information, by limiting the band of spatial frequencies in the horizontal direction and decreasing the number of pixels in the horizontal direction. The RAW image reduced in the horizontal direction is stored in a line memory. A second generation unit generates a reduced RAW image by decreasing, at least in the vertical direction, the number of pixels of the RAW image reduced in the horizontal direction. This makes it possible to generate a reduced RAW image using little memory capacity.

Image processing apparatus and method for controlling the same

The present invention has a configuration in which a reduction and interpolation circuit having a variable reduction ratio and at least one reduction circuit having a fixed reduction ratio are sequentially connected. In the case where a set reduction rate cannot be achieved in the reduction and interpolation circuit, a reduction ratio for the reduction and interpolation circuit is determined such that the set reduction ratio can be achieved through a combination of the reduction ratio of the reduction and interpolation circuit and the reduction ratio of the reduction circuit. It is thereby possible to obtain an image processing apparatus capable of generating a reduced image reduced at a high reduction ratio and having high image quality while suppressing the circuit size.

Image processing apparatus for image reduction processing and control method thereof

Image processing apparatus and method of controlling the same

The present invention allows still images to be recorded during moving image recording, and does not require frame data to be generated and written for all frames missed as a result of the still image recording. Thus, when the recording of a still image is instructed during moving image recording, the moving image recording is interrupted, and the number of moving image frames missed during the still image recording is counted. The still image obtained by an image sensing device is shot, and the shot still image data is stored on a memory card. Next, a pseudo moving image frame is generated from the still image data and appended to the interrupted moving image file. Moving image recording is then resumed. Offsets are adjusted at this time so that the counted missing frames point to the pseudo frame.

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Yokohama, Japan

Shutaro Kunieda