Abstract: A data processing apparatus, a method, a program, and a multispectral camera that can favorably remove an interference component and reduce noise included in a plurality of images output from an image sensor of a multispectral camera are provided. In a data processing method, first captured data that corresponds to a plurality of wavelength ranges output from an image sensor of a multispectral camera and that includes first noise is processed. In the data processing method, an interference removing parameter for removing an interference component included in the first captured data is acquired (step S30), and the interference component included in the first captured data is removed based on the interference removing parameter (step S40). Then, noise reducing processing of reducing second noise included in second captured data after interference removing is performed (step S60).

Abstract: The present disclosure relates to detection of crosstalk included in images output from an image sensor. An information processing apparatus includes a processor configured to process images output from an image sensor of an imaging apparatus that captures images having different characteristics by splitting a pupil. The processor is configured to acquire a first image that is captured by the imaging apparatus under a first imaging condition and that is output from the image sensor, acquire a second image that is captured by the imaging apparatus under a second imaging condition different from the first imaging condition and that has the same characteristic as the first image among the images output from the image sensor, and detect crosstalk included in the images based on a correlation between feature amounts of the first image and the second image.

Abstract: Provided are an image data processing device and an image data processing method that can generate a high-quality image. An image data processing device for processing first image data obtained by imaging light of a subject, which has been spectrally separated into a plurality of wavelengths through a band-pass filter, with an image sensor includes a processor. The processor is configured to acquire the first image data, to calculate a feature amount in a transmission wavelength range of the band-pass filter on the basis of the first image data, and to calculate information of spectral characteristics of the subject on the basis of the feature amount.

Abstract: Provided are a lens device, an imaging apparatus, and a filter unit capable of suppressing occurrence of ghosts and flares. The lens device includes a first optical filter and a second optical filter in order from an object side in an optical path. The first optical filter is composed of an optical filter (for example, a band-pass filter) that has a light transmission band in a specific wavelength region. The second optical filter is composed of an optical filter (band-stop filter) that has a light absorption band in a wavelength region which is different from the light transmission band of the first optical filter.

Abstract: An embodiment of the present invention provides an information processing method, an information processing apparatus, an information processing program, and an information processing system that can acquire a multispectral image having a good image quality.

Abstract: Provided are an image processing device, an imaging element, an image processing method, and an image processing program that satisfactorily generate a plurality of polarized image data from polarized image data acquired from an imaging element.

Abstract: Provided are a lens device, an imaging apparatus, and a filter unit capable of suppressing occurrence of ghosts and flares. The lens device includes a first optical filter and a second optical filter in order from an object side in an optical path. The first optical filter is composed of an optical filter (for example, a band-pass filter) that has a light transmission band in a specific wavelength region. The second optical filter is composed of an optical filter (band-stop filter) that has a light absorption band in a wavelength region which is different from the light transmission band of the first optical filter.

Abstract: An imaging method of imaging a subject through a multispectral camera including a processor, includes: causing the processor to perform: a data acquisition step of acquiring first spectral data of a first subject, second spectral data of a second subject, and third spectral data of a third subject; a wavelength selection step of selecting a plurality of wavelengths from a wavelength region of the acquired first to third spectral data, the wavelength selection step being for determining, as a computational amount, a difference or a ratio between feature amounts of two pieces of spectral data, from among the first spectral data, the second spectral data, and the third spectral data, and obtaining computational amounts to select the plurality of wavelengths; and an imaging step of imaging a subject including at least one of the first subject, the second subject, or the third subject at the plurality of wavelengths.

Abstract: A lens device includes an imaging optical system and an optical member. The optical member is disposed near a pupil of the imaging optical system in a state where an optical axis of the optical member coincides with an optical axis of the imaging optical system. The optical member includes a frame that includes a plurality of aperture regions, a plurality of optical filters that are disposed in at least one of the plurality of aperture regions and include two or more optical filters transmitting light having at least some wavelength ranges different from each other, and a plurality of polarizing filters that are disposed in at least one of the plurality of aperture regions and have different polarization directions. The lens barrel has a slit, and the optical member is insertable into and removable from the imaging optical system through the slit.

Abstract: Provided are a signal processing device, a signal processing method, a signal processing program, an imaging apparatus, and a lens apparatus capable of accurately removing an offset from an output signal of a blurring detection sensor. The signal processing device comprises the blurring detection sensor and a processor. The processor is configured to execute processing of extracting a first feature amount relating to the offset from the output signal of the blurring detection sensor, processing of integrating the output signal, processing of extracting a second feature amount relating to the offset from a value obtained by integrating the output signal, processing of calculating the offset on the basis of the first feature amount and the second feature amount, and processing of subtracting the calculated offset from the output signal.

Abstract: A lens device includes an imaging optical system and an optical member. The optical member is disposed near a pupil of the imaging optical system in a state where an optical axis of the optical member coincides with an optical axis of the imaging optical system. The optical member includes a frame that includes a plurality of aperture regions, a plurality of optical filters that are disposed in at least one of the plurality of aperture regions and include two or more optical filters transmitting light having at least some wavelength ranges different from each other, and a plurality of polarizing filters that are disposed in at least one of the plurality of aperture regions and have different polarization directions. The lens barrel has a slit, and the optical member is insertable into and removable from the imaging optical system through the slit.

Abstract: Provided are a signal processing device, a signal processing method, a signal processing program, an imaging apparatus, and a lens apparatus capable of accurately removing an offset from an output signal of a blurring detection sensor. The signal processing device comprises the blurring detection sensor and a processor. The processor is configured to execute processing of extracting a first feature amount relating to the offset from the output signal of the blurring detection sensor, processing of integrating the output signal, processing of extracting a second feature amount relating to the offset from a value obtained by integrating the output signal, processing of calculating the offset on the basis of the first feature amount and the second feature amount, and processing of subtracting the calculated offset from the output signal.

Abstract: An image data processing device processes image data captured by an imaging device that includes an optical system which spectrally separates incident light and polarizes light with the spectrally separated wavelengths, and emits the polarized light in a specific direction and an imaging element including a plurality of pixel sets each of which includes different types of polarizers. The image data processing device performs processes of: acquiring the image data; detecting a pixel whose pixel value is out of a predetermined range as an abnormal pixel from the acquired image data; correcting a pixel value of the abnormal pixel on the basis of pixel values of peripheral pixels in a case in which the abnormal pixel is detected; and generating images of the spectrally separated wavelengths from the image data in which the pixel value of the abnormal pixel has been corrected when the abnormal pixel is detected.

Abstract: The imaging lens includes, in order from a position closest to an object side to an image side: a front lens group that has a positive refractive power and is immovable during focusing; a stop that is disposed subsequent to the front lens group; a first focus lens group that has a positive refractive power; a second focus lens group that has a negative refractive power; and a final lens group that has a positive refractive power, is disposed closest to the image side, and is immovable during focusing. During focusing from an infinite distance object to a short range object, the first focus lens group and the second focus lens group move to increase a mutual distance therebetween.

Abstract: Provided are a data processing apparatus, a data processing method, a data processing program, an optical element, an imaging optical system, and an imaging apparatus which can select two or more wavelengths suitable for discrimination of a desired subject among a plurality of subjects. In a data processing apparatus (10-1) including a processor, the processor performs data acquisition processing of acquiring first spectral data of a first subject and second spectral data of a second subject, and wavelength selection processing of selecting a plurality of specific wavelengths from wavelength ranges of the acquired first spectral data and second spectral data, and in the wavelength selection processing, the plurality of specific wavelengths are selected based on a difference in a feature amount between the first spectral data and the second spectral data.

Abstract: A data processing apparatus includes a processor, in which the processor executes data acquisition processing of acquiring spectral data of a plurality of subjects, calculation processing of calculating intensity characteristics at a first wavelength and a second wavelength selected from wavelength ranges of the acquired spectral data of the plurality of subjects based on a relationship between two wavelengths which are the first wavelength and the second wavelength, data conversion processing of converting the intensity characteristics calculated in the calculation processing into discrimination data of a specific subject for the wavelength range, and output processing of outputting the discrimination data to an outside.

Abstract: Provided are a lens device, a filter unit, and an imaging apparatus capable of suppressing occurrence of ghosts. The lens device includes a filter unit in an optical path. The filter unit has a plurality of opening portions including a first opening portion and a second opening portion. At least the first opening portion and the second opening portion each include a band-pass filter, and each include an optical element on at least one of an object side or an image side of the band-pass filter. The optical element is composed of a polarized light filter and a wave plate which converts linearly polarized light into circularly polarized light or elliptically polarized light. The first opening portion and the second opening portion pass light in different wavelength regions and different polarization directions.

Abstract: An optical member includes aperture regions, a lens device, and an imaging apparatus. A lens device includes: an imaging optical system; a first polarizing part that polarizes at least a part of rays transmitted through the imaging optical system; and a filter unit that is disposed at a pupil position of the imaging optical system or near the pupil position, and includes aperture regions transmitting the rays of the imaging optical system and including a first aperture region and a second aperture region, wavelength selective filters disposed in the first aperture region and the second aperture region and transmitting pieces of light of which at least a part of wavelength ranges are different from each other, and a second polarizing filter including polarizing filters disposed in the first aperture region and the second aperture region and having polarization directions different from each other.

Abstract: The imaging lens includes, successively in order from a position closest to an object side, a first lens group that has a positive refractive power and a second lens group that has a negative refractive power. During focusing, only the second lens group moves. The first lens group consists of a first A group, an aperture stop, and a first B group, in order from the object side. The second lens group includes at least one positive lens. The imaging lens satisfies predetermined conditional expressions.

Abstract: There are provided an optical member and an imaging apparatus. An optical member includes a plurality of aperture regions which transmit a ray of an optical system and include a first aperture region and a second aperture region and of which the first aperture region and the second aperture region are adjacent to each other, a plurality of optical filters disposed in the first aperture region and the second aperture region transmit light having at least a part of wavelength ranges different from each other, a plurality of polarizing filters disposed in the first aperture region and the second aperture region have polarization directions different from each other, and a ray incidence-reduction part that reduces incidence of a ray, which is incident on the first aperture region, on at least one of the optical filter or the polarizing filter disposed in the second aperture region.