Canon Kabushiki Kaisha

Takashi Oniki

Koshi Hatakeyama

Chiaki Inoue

Takayoshi Yokoyama

Tsunefumi Tanaka

A manufacturing method of learning data is used for making a neural network perform learning. The manufacturing method of learning data includes a first acquiring step configured to acquire an original image, a second acquiring step configured to acquire a first image as a training image generated by adding blur to the original image, and a third acquiring step configured to acquire a second image as a ground truth image generated by adding blur to the original image. A blur amount added to the second image is smaller than that added to the first image.

Manufacturing method of learning data, learning method, learning data manufacturing apparatus, learning apparatus, and memory medium

An image processing apparatus includes an acquirer configured to acquire a captured image generated through imaging by an optical system, a reconstruction processor configured to reconstruct a discretized point spread function of the optical system using coefficient data used to approximate the point spread function, and a sharpening processor configured to perform unsharp mask processing for the captured image based on information on the reconstructed point spread function. A discretization interval of the reconstructed point spread function is different according to an image height.

Image processing method, imaging apparatus using the same, image processing apparatus, storage medium, and lens apparatus

An image processing apparatus includes an acquirer configured to acquire a captured image generated through imaging by an optical system, a reconstruction processor configured to reconstruct a discretized point spread function of the optical system using coefficient data used to approximate the point spread function, and a sharpening processor configured to perform unsharp mask processing for the captured image based on information on the reconstructed point spread function. A discretization interval of the reconstructed point spread function is different from a pixel pitch in an image sensor used for the imaging.

Image processing apparatus, imaging apparatus, image processing method, storage medium, and lens apparatus

An image processing method includes the steps of acquiring a captured image generated through image capturing using an optical system, performing first shaping processing so as to reduce a difference between a maximum value and a non-maximum value for data generated using information of a point spread function of the optical system corresponding to an image capturing condition of the captured image, performing rotating processing according to a position of the captured image for the data after the first shaping processing, and performing sharpening processing of the captured image using the data after the rotating processing.

Image processing method, image processing apparatus, image capturing apparatus, and storage medium

The image processing apparatus is configured to perform image processing on an input image produced by image capturing through an optical system. The apparatus includes a first distribution producer configured to produce a first distribution by using data for approximating a point spread function that corresponds to a condition relating to the image capturing, a second distribution producer configured to produce a second distribution by mirroring a part of the first distribution, a filter producer configured to produce, by using the second distribution, a first filter to be used for a sharpening process, and a processor configured to perform the sharpening process on the input image by using the first filter to produce a sharpened image.

Image processing apparatus configured to sharpen image having complex blur, image capturing apparatus, image processing method and storage medium storing image processing program

An image processing apparatus acquires an input image generated by image pickup via an optical system, and perform unsharp mask processing for the input image using a filter generated based on information of a PSF of the optical system. The filter is generated based on an unsharp mask used for the unsharp mask processing, and includes two-dimensional data having filter coefficients that are arranged rotationally asymmetrically with respect to a filter coefficient corresponding to a target pixel in the input image in convoluting the filter with the input image. A peak position or a center of gravity position of the unsharp mask accords with a position of the filter coefficient corresponding to the target pixel in the filter.

Image processing apparatus, image pickup apparatus, image processing method, and storage medium

An image processing apparatus includes a processor that sharpens an input image on the basis a difference between a filter and a low pass filter, which are generated using of information regarding a point spread function of an optical system corresponding to an image pickup condition of the optical system, or a difference between an image obtained by applying the filter to an input image generated by imaging through the optical system and an image obtained by applying the low pass filter to the input image.

Image processing apparatus, optical apparatus, image processing method, and non-transitory computer-readable storage medium

A non-transitory computer-readable storage medium storing an image processing program that causes a computer to execute an image processing method comprising acquiring step of acquiring an input image generated by image pickup through an optical system, generating step of generating a point spread function by using coefficient data of a function approximating a point spread function corresponding to an image-pickup condition of the optical system, and providing step of providing unsharp mask processing to the input image using a filter generated based on information of the point spread function generated by using the coefficient data. The filter is a filter having two-dimensional data.

Image processing method, image-pickup apparatus and image processing apparatus using the method, and non-transitory computer-readable storage medium storing image processing program using the method

An image processor includes a correction signal generator configured to generate a correction signal by calculating a difference between an image and an image obtained by applying an unsharp mask generated based on a PSF corresponding to an image-pickup conditions of an image-pickup optical system to the image, and a correction signal applier configured to sharpen the image by multiplying the correction signal generated by the generator by a constant and by adding a multiplied correction signal to the image.

Image processing apparatus, image pickup apparatus, image processing method, and non-transitory computer-readable storage medium

The image processing apparatus performs an image process on a first image produced by image capturing. The apparatus includes: a memory storing coefficient data containing coefficients to be used in an approximation function to approximate a PSF of an image capturing optical system, and a processor performs the image process. The processor produces an approximated point spread function by using the coefficient of the coefficient data corresponding to an optical state of the optical system in the image capturing and two of a pixel pitch of an image sensor, a kernel size of a filter to be used for a sharpening process on the first image and number of taps of the filter; produce the filter by using the approximated PSF; and produce a second image that is a sharpened image by applying the filter to the first image.

Image processing apparatus, image capturing apparatus, image processing method and storage medium storing image processing program

An image processing apparatus () includes a detection unit () configured to detect a first region in which one of a signal level of a color plane corresponding to at least one color filter of an image acquired from an image pickup element including a plurality of color filters and a signal level of a brightness plane generated from the image monotonically increases or monotonically decreases in a first direction in a predetermined section, a determination unit () configured to determine a second region in which color bleeding occurs, based on optical information on the color bleeding of an image pickup optical system and information on the first region, and a correction unit () configured to correct the image so as to reduce the color bleeding.

Image processing apparatus, image pickup apparatus, image pickup system, image processing method, and non-transitory computer-readable storage medium

A compound eye image pickup apparatus includes a plurality of optical systems () including a first optical system having a longest focal length, and an optical system group of a plurality of second optical systems having focal lengths different from the focal length, and includes an image pickup element () including a plurality of image pickup regions corresponding to the plurality of optical systems, and a condition expression below is satisfied, where p (mm) represents a pixel pitch of the image pickup element, S (mm) represents an area of the image pickup element, Prepresents an average value of the number of pixels of each image pickup region, Prepresents a sum of the number of the pixels of each image pickup region, Nrepresents the number of the first optical systems, and var represents the number of the different focal lengths.

Compound eye image pickup apparatus

An image processing apparatus includes an image obtaining portionthat obtains a first and second images having exposures different from each other, a region selecting portionthat selects a first region different from a region containing a luminance saturation part from the first image, and that selects a second region corresponding to the region containing the luminance saturation part of the first image from the second image, an image restoration processing portionthat performs an image restoration processing using an image restoration filter generated based on an optical transfer function for the first region of the first image and the second region of the second image, and an image replacing portionthat replaces the region containing the luminance saturation part of the first image with the second region of the second image so as to synthesize the first and second regions to generate one image.

Image processing apparatus for correcting an aberration of an image containing a luminance saturation part, image pickup apparatus, image processing method, and non-transitory recording medium storing program

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Utsunomiya, Japan

Takashi Oniki