Canon Kabushiki Kaisha

Daisuke Higuchi

Kento Watanabe

Hiroyuki Hasegawa

Takayuki Kimura

Takenori Kobuse

Takahiro Kamikura

Shunsuke Miyajima

Shigeharu Aoki

Masatoshi Otsubo

Taro Takita

Shunsuke Kawahara

Takuya Nabeshima

In an image processing apparatus, an image signal of a plurality of polarized lights is input, for each set of image signals corresponding to the polarized lights, a maximum value of polarization intensities of polarization components of the image signals and a polarization angle at which the maximum value of the polarization intensities is obtained are found, and a target area to which polarization reduction is to be applied is found based on the image signal and a statistical area is set in the target area. Representative intensity and angle which are modes of the polarization intensities and angles of the sets included in the statistical area are found, and first correction processing for correcting each image signal of the sets included in the target area is performed using the representative intensity and angle according to the polarization angle of the each image signal.

Image processing apparatus and method, and image capturing apparatus

An information processing apparatus that performs machine learning of a learning model for improving the accuracy of inference of an image even in a case where the characteristics of an image are changed by correction applied to the image. The image processing apparatus includes an image processor configured to perform image processing on a training image and a teacher image according to each of a plurality of correction conditions. Machine learning of the learning model is performed using the training image and the teacher image. A plurality of parameters obtained by performing the machine learning of the learning model are stored in association with the plurality of correction conditions, respectively.

Image processing apparatus that performs machine learning of learning model, method of controlling image processing apparatus, and storage medium

An image pickup apparatus which is capable of, even when a flash band appears during a zooming operation, properly compensating for the flash band to generate a post-compensation image having no different levels of luminance. A lens unit has a zoom function. Image information generated based on image signals output from an image pickup device, which sequentially starts exposure and sequentially reads out signals for each row of pixels, is held in a memory unit. Based on the image information, the flash band caused by an external flash and extending across a plurality of frames is detected, and frames in which the flash band was detected are corrected to obtain an image having no different levels of luminance. The frames are corrected according to a calculated zoom change ratio of the lens unit when the zoom change ratio does not fall inside a first range determined in advance.

Image pickup apparatus with flash band compensation technique, control method therefor, and storage medium

In an apparatus, a control unit switches acquisition of a phase difference signal for each area in a sensing device, a correction unit selects defect information associated with a pixel signal acquired from the sensing device and corrects the pixel signal based on the selected defect information, and a memory stores the defect information. The defect information stored in the memory includes at least first defect information and second defect information in the same format as that of the first defect information. The correction unit switches defect information to be used based a change in an area in a frame for which the phase difference signal is to be acquired.

Image capturing apparatus and control method therefor

An image capturing apparatus comprises: an image sensor which has a plurality of pixels; and a plurality of processing circuits which correct images of different frames output from the image sensor. Each processing circuit includes: a first detection circuit which performs defective pixel detection on a portion of a region of the plurality of pixels which is different from portions of the region on which the other processing circuits perform defective pixel detection; and a memory which stores information on defective pixels for the entire region obtained by combining information on defective pixels detected by the first detection circuit and information on defective pixels obtained by the other processing circuits. Further, each processing circuit corrects the image of each frame output from the image sensor, using the information on defective pixels for the entire region stored in the memory.

Image capturing apparatus comprising a plurality of processing circuits for correcting defective pixel by using information of defective pixel detected in different frames and control method for the same

A signal processing apparatus comprising: an analog-digital converter that uses reference signals having different slopes from each other; a supply unit that supplies analog signals of predetermined different output levels; and a calculation unit that calculates a slope ratio and an offset amount between the plurality of different slopes for correcting a converted digital signal based on digital signals respectively obtained by converting the analog signals of the different output levels using the reference signals. In a case where the conversion is performed using a reference signal with a steeper slope, the supply unit supplies at least one high level analog signal whose level is higher than a case where the conversion is performed using a reference signal with a gentler slope, and a digital signal obtained by converting the high level analog signal is further used when calculating the slope ratio.

Signal processing apparatus and signal processing method, and image capturing apparatus

An image processing apparatus comprises: a memory which stores an address of a defective pixel that satisfies a predetermined condition, among defective pixels included in an image sensor covered with color filters; and a correction circuit which corrects, among pixel data of an image obtained by exposing the image sensor, the pixel data of the defective pixel at the address stored in the memory. The defective pixel is a pixel having pixel data whose difference from a value determined using the pixel data of surrounding pixels is greater than a threshold value, and the predetermined condition includes at least one of a condition that a plurality of defective pixels among pixels corresponding to different or the same color filters are adjacent to each other.

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Nagareyama, Japan

Daisuke Higuchi