Abstract: In an imaging apparatus, a pupil division optical system includes a first pupil transmitting light of a first wavelength band and a second pupil transmitting light of a second wavelength band different from the first wavelength band. An imaging device is configured to capture an image of light transmitted through the pupil division optical system and a first color filter having a first transmittance characteristic and light transmitted through the pupil division optical system and a second color filter having a second transmittance characteristic partially overlapping the first transmittance characteristic, and output the captured image. A processor is configured to generate a monochrome correction image or a correction image by correcting a value that is based on components overlapping between the first transmittance characteristic and the second transmittance characteristic for the captured image.

Abstract: In an imaging apparatus, a pupil division optical system includes a first pupil transmitting light of a first wavelength band and a second pupil transmitting light of a second wavelength band different from the first wavelength band. An imaging device is configured to capture an image of light transmitted through the pupil division optical system and a first color filter having a first transmittance characteristic and light transmitted through the pupil division optical system and a second color filter having a second transmittance characteristic partially overlapping the first transmittance characteristic, and output the captured image. A processor is configured to generate a monochrome correction image or a correction image by correcting a value that is based on components overlapping between the first transmittance characteristic and the second transmittance characteristic for the captured image.

Abstract: An imaging device includes an image sensor, an optical system forming an image of an object on the image sensor, and a processor. The optical system switches between a first state of capturing an image of the object with a single pupil and a second state of capturing an image of the object with two pupils. The processor generates a simulative phase difference image from a first captured image captured with the image sensor in the first state, and executes matching processing of comparing the simulative phase difference image with a second capture image captured with the image sensor in the second state to detect a phase difference between an image formed with one of the two pupils and an image formed with another one of the two pupils.

Abstract: An imaging device includes an image sensor, an optical system forming an image of an object on the image sensor, and a processor. The optical system switches between a first state of capturing an image of the object with a single pupil and a second state of capturing an image of the object with two pupils. The processor generates a simulative phase difference image from a first captured image captured with the image sensor in the first state, and executes matching processing of comparing the simulative phase difference image with a second capture image captured with the image sensor in the second state to detect a phase difference between an image formed with one of the two pupils and an image formed with another one of the two pupils.

Abstract: An imaging device includes: an image sensor; an imaging optical system; a movable mask; and a second filter. The imaging optical system forms an image of a subject on the image sensor, by using a first optical path and a second optical path involving parallax relative to the first optical path. The movable mask includes a first filter transmitting light in a first wavelength band and a light shielding section, and is movable relative to the imaging optical device. The second filter transmitting light in a second wavelength band different from the first wavelength band is provided in the second optical path.

Abstract: An imaging device includes: an image sensor; an imaging optical device; a fixed mask; and a movable mask. The imaging optical device forms an image of a subject on the image sensor. The fixed mask includes first to third openings that divide a pupil of the imaging optical device, a first filter transmitting light in a first wavelength band, a second filter transmitting light in a second wavelength band different from the first wavelength band. The movable mask includes a light shielding section and fourth to sixth openings that are provided on the light shielding section and correspond to the first to the third openings, and is movable relative to the imaging optical device. The first filter is provided to the first opening. The second filter is provided to the second opening. The third opening is provided to an optical axis of the imaging optical device.

Abstract: An image processing device includes a processor including hardware. The processor is configured to implement an image acquisition process that acquires an image captured by an image sensor that includes a first-color filter having first transmittance characteristics, a second-color filter having second transmittance characteristics, and a third-color filter having third transmittance characteristics, and a correction process that multiplies a pixel value that corresponds to a second color by a first coefficient to calculate a component value that corresponds to the overlapping region of the first transmittance characteristics and the third transmittance characteristics, and corrects a pixel value that corresponds to a first color, the pixel value that corresponds to the second color, and a pixel value that corresponds to a third color based on the component value that corresponds to the overlapping region.

Abstract: An imaging device includes an optics, an image sensor, and a processor including hardware. The optics includes a first pupil and a second pupil. The image sensor includes a first-color filter that has first transmittance characteristics, a second-color filter that has second transmittance characteristics, and a third-color filter that has third transmittance characteristics. The processor is configured to implement a correction process that corrects a pixel value that corresponds to a first color and a pixel value that corresponds to a third color based on a component value that corresponds to the overlapping region of the first transmittance characteristics and the third transmittance characteristics, and a phase difference detection process that detects the phase difference between an image formed by the corrected pixel value that corresponds to the first color and an image formed by the corrected pixel value that corresponds to the third color.

Abstract: An imaging device includes an imager, and a processor including hardware. The imager includes an optical low-pass filter that has a cut-off frequency equal to or lower than 1/(2P) when the pitch of the pixels that are used to capture a first object image and a second object image are P. The processor is configured to implement the densification process that includes performing an upsampling process on a first image in which the first object image is captured and a second image in which the second object image is captured, and performing a two-dimensional low-pass filtering process on the first image and the second image that have been subjected to the upsampling process, and a phase difference detection process that detects the phase difference between the first image and the second image that have been subjected to the densification process.

Abstract: An imaging device includes an imager, and a processor including hardware. The processor is configured to implement a phase difference detection process that calculates an average value of a pixel value of a first image and a pixel value of a second image that have been subjected to a normalization process, and calculates a correlation coefficient based on a value obtained by adding up the values obtained by subjecting the pixel value of the first image and the pixel value of the second image that have been subjected to a subtraction process within a fall interval in which the average value decreases, and a value obtained by adding up the values obtained by subjecting the pixel value of the first image and the pixel value of the second image that have been subjected to the subtraction process within a rise interval in which the average value increases.

Abstract: The image conversion section calculates luminance values and color difference values based on pixel values of the captured image that respectively correspond to a plurality of colors, and outputs a luminance image formed by the calculated luminance values and a color difference image formed by the calculated color difference values. The estimation calculation section calculates an estimated luminance value of each pixel of a high-resolution image based on the luminance image, and calculates an estimated color difference value of each pixel of the high-resolution image based on the color difference image. The pixel value conversion section converts the estimated luminance value and the estimated color difference value into RGB pixel values of each pixel of the high-resolution image.

Abstract: An imaging device includes an optical filter, an image sensor, a multi-band estimation section, and a processor including hardware. The optical filter divides the pupil of an imaging optics into a first pupil and a second pupil that differs in wavelength passband from the first pupil. The image sensor includes a first-color filter that has first transmittance characteristics, a second-color filter that has second transmittance characteristics, and a third-color filter that has third transmittance characteristics. The processor is configured to implement a multi-band estimation process that estimates component values that respectively correspond to first to fourth bands based on pixel values that respectively correspond to first to third colors that form an image captured by the image sensor, the first to fourth bands being set based on the wavelength passbands of the first pupil and the second pupil, and the first to third transmittance characteristics.

Abstract: An image processing device includes a processor including hardware. The processor is configured to implement an image acquisition process that acquires an image captured by an image sensor that includes a first-color filter having first transmittance characteristics, a second-color filter having second transmittance characteristics, and a third-color filter having third transmittance characteristics, and a correction process that multiplies a pixel value that corresponds to a second color by a first coefficient to calculate a component value that corresponds to the overlapping region of the first transmittance characteristics and the third transmittance characteristics, and corrects a pixel value that corresponds to a first color, the pixel value that corresponds to the second color, and a pixel value that corresponds to a third color based on the component value that corresponds to the overlapping region.

Abstract: An imaging device includes an optics, an image sensor, and a processor including hardware. The optics includes a first pupil and a second pupil. The image sensor includes a first-color filter that has first transmittance characteristics, a second-color filter that has second transmittance characteristics, and a third-color filter that has third transmittance characteristics. The processor is configured to implement a correction process that corrects a pixel value that corresponds to a first color and a pixel value that corresponds to a third color based on a component value that corresponds to the overlapping region of the first transmittance characteristics and the third transmittance characteristics, and a phase difference detection process that detects the phase difference between an image formed by the corrected pixel value that corresponds to the first color and an image formed by the corrected pixel value that corresponds to the third color.

Abstract: An image processing device includes a storage section, an estimation calculation section, and an image output section. A pixel is sequentially shifted so that overlap occurs to acquire a light-receiving value of the pixel as a low-resolution frame image. The storage section stores the low-resolution frame image. The estimation calculation section estimates estimated pixel values at a pixel pitch smaller than the pixel pitch of the low-resolution frame image. The image output section outputs a high-resolution frame image that has a resolution higher than that of the low-resolution frame image based on the estimated pixel values. The estimation calculation section calculates the difference between the light-receiving value of the pixel set at a first position and the light-receiving value of the pixel set at a second position, and estimates the estimated pixel values based on the difference.

Abstract: Light-receiving unit is set corresponding to a plurality of pixels. The pixel values of a plurality of pixels included in the light-receiving unit are added up, and read as light-receiving value to acquire a low-resolution frame image. The image processing device includes an estimation calculation section that estimates the pixel values of the pixels included in the light-receiving unit based on a plurality of low-resolution frame images, and an image output section that outputs a high-resolution frame image based on the estimated pixel values. The light-receiving value is read while sequentially performing a pixel shift process so that light-receiving units overlap each other. The estimation calculation section estimates the pixel values of the pixels included in the light-receiving unit based on the light-receiving values obtained by performing the pixel shift process.

Abstract: The image conversion section calculates luminance values and color difference values based on pixel values of the captured image that respectively correspond to a plurality of colors, and outputs a luminance image formed by the calculated luminance values and a color difference image formed by the calculated color difference values. The estimation calculation section calculates an estimated luminance value of each pixel of a high-resolution image based on the luminance image, and calculates an estimated color difference value of each pixel of the high-resolution image based on the color difference image. The pixel value conversion section converts the estimated luminance value and the estimated color difference value into RGB pixel values of each pixel of the high-resolution image.

Abstract: Light-receiving unit is set corresponding to a plurality of pixels. The pixel values of a plurality of pixels included in the light-receiving unit are added up, and read as light-receiving value to acquire a low-resolution frame image. The image processing device includes an estimation calculation section that estimates the pixel values of the pixels included in the light-receiving unit based on a plurality of low-resolution frame images, and an image output section that outputs a high-resolution frame image based on the estimated pixel values. The light-receiving value is read while sequentially performing a pixel shift process so that light-receiving units overlap each other. The estimation calculation section estimates the pixel values of the pixels included in the light-receiving unit based on the light-receiving values obtained by performing the pixel shift process.

Abstract: To provide an illuminating apparatus that can control an illumination period in accordance with an image capturing exposure period without disturbing the color balance, and that can radiate bright illumination light possessing high directivity. The illuminating apparatus (3) includes: a light source (9) including a plurality of light emitting elements (13) aligned in a ring-like manner and emitting light in a radially inward direction; a light guide member (10) having an entering end faces to the radially inward direction of the light source (9) and an emitting end arranged on the center axis of the ring, and guiding light caused to enter the light guide member (10) from the entering end to the emitting end; and a rotary part rotating the light guide member (10) about the center axis of the ring. The light source is structured with a plurality of unit light source blocks P aligned in the circumferential direction.

Abstract: An imaging apparatus includes an imaging optical system that forms an image of an object in an image-pickup element, and a pixel shift control section that causes the image of the object formed in the image-pickup element to be shifted by a shift amount s, and then sampled. A storage section stores a plurality of field images that are obtained when the image-pickup element performs an imaging operation each time the image of the object is shifted by the shift amount s. An image generation section generates a frame image based on the plurality of field images, and sequentially outputs the generated frame image every field.