A camera system includes two or more sensor arrays and an optical path. The sensor arrays are on the same sensor chip. Each sensor array includes the same field of view (FOV) as each other sensor array. The optical path includes a main lens and a metalens that are shared by each sensor array, and a microlens associated with each sensor array. The metalens splits incident light into different spectrums of light and directs each respective spectrum to a corresponding sensor array. The different spectrums of light include at least two of visible light, near infrared light, shortwave infrared and longwave infrared, and at least one sensor array includes single-photon avalanche diodes. The image processor that provides image processing, object recognition and object tracking and/or image fusion functionality may be on the same sensor chip as the sensor arrays.

A camera system includes two or more sensor arrays and an optical path. The sensor arrays are on the same sensor chip. Each sensor array includes the same field of view (FOV) as each other sensor array. The optical path includes a main lens and a metalens that are shared by each sensor array, and a microlens associated with each sensor array. The metalens splits incident light into different spectrums of light and directs each respective spectrum to a corresponding sensor array. The different spectrums of light include at least two of visible light, near infrared light, shortwave infrared and longwave infrared, and at least one sensor array includes single-photon avalanche diodes. The image processor that provides image processing, object recognition and object tracking and/or image fusion functionality may be on the same sensor chip as the sensor arrays.

Multi-color flash with image post-processing that uses a camera device with a multi-color flash and implements post-processing to generate images is described. In one aspect, the multi-color flash with image post-processing may be implemented by a controller configured to control a camera and flashes of at least two different colors. The controller may be configured to cause the camera to acquire a first image of a scene while the scene is being illuminated with the first flash but not the second flash, then cause the camera to acquire a second image of the scene while the scene is being illuminated with the second flash but not the first flash, and generate a final image of the scene in post-processing based on a combination of the first image and the second image.

Multi-color flash with image post-processing that uses a camera device with a multi-color flash and implements post-processing to generate images is described. In one aspect, the multi-color flash with image post-processing may be implemented by a controller configured to control a camera and flashes of at least two different colors. The controller may be configured to cause the camera to acquire a first image of a scene while the scene is being illuminated with the first flash but not the second flash, then cause the camera to acquire a second image of the scene while the scene is being illuminated with the second flash but not the first flash, and generate a final image of the scene in post-processing based on a combination of the first image and the second image.

[Object] To provide an image-capturing apparatus, an image-capturing method, and a program that are suitable to perform image-capturing with pieces of light of different wavelengths. [Solving Means] An image-capturing apparatus according to the present technology includes an imaging element, an optical element, a first stop, a second stop, and a stop controller. The imaging element performs wavelength separation on incident light to obtain first light of a first wavelength and second light of a second wavelength, and photoelectrically converts the first light and the second light, the first light and the second light being included in the incident light. The optical element collects light in the image-capturing apparatus. The first stop is provided in a path of the incident light, and includes a first opening portion and a first blocking portion, the first opening portion being a portion through which the first light and the second light are transmitted, the first blocking portion being a portion that blocks the first light and through which the second light is transmitted. The second stop is provided in the path of the incident light, and includes a second opening portion and a second blocking portion, the second opening portion being a portion through which the first light and the second light are transmitted, the second blocking portion being a portion that blocks the second light and through which the first light is transmitted. The stop controller separately controls a size of the first opening portion and a size of the second opening portion.

Provided is an endoscope system capable of improving luminance and an S/N ratio of a normal observation image that is obtained in a special observation mode. In a special observation mode, after first illumination light is radiated, some of a plurality of pixel rows of an imaging element are reset en bloc. Illumination light is switched to second illumination light, the second illumination light is radiated, and then, a turned-off state is reached. During this turn-off period, signal reading is sequentially performed from all pixel rows. An image processing unit generates a normal observation image on the basis of a first imaging signal without being subjected to resetting. Further, the image processing unit generates an oxygen saturation image on the basis of a second imaging signal read from the pixel row subjected to the resetting and exposed by only the second illumination light, and the first imaging signal.

A multicamera device includes: a first sensor to detect a first spectrum of external light; a second sensor to detect a second spectrum of the external light; and an optic overlapping with the first and second sensors. The optic includes: a substrate; a first reflective layer on the substrate; and an optical layer between the first sensor and the substrate, the optical layer to transmit the first spectrum of the external light to the first sensor, and reflect the second spectrum of the external light toward the first reflective layer, and the first reflective layer is to reflect the second spectrum of the external light in a direction toward the second sensor.

Provided is an endoscope system capable of improving luminance and an S/N ratio of a normal observation image that is obtained in a special observation mode.

In a special observation mode, after first illumination light is radiated, some of a plurality of pixel rows of an imaging element are reset en bloc. Illumination light is switched to second illumination light, the second illumination light is radiated, and then, a turned-off state is reached. During this turn-off period, signal reading is sequentially performed from all pixel rows. An image processing unit generates a normal observation image on the basis of a first imaging signal without being subjected to resetting. Further, the image processing unit generates an oxygen saturation image on the basis of a second imaging signal read from the pixel row subjected to the resetting and exposed by only the second illumination light, and the first imaging signal.