An image capture apparatus includes: an acquisition unit configured to acquire image data of a subject; an identification unit configured to identify a color temperature of light from the subject on the basis of the image data acquired by the acquisition unit; an adjustment unit configured to adjust a white balance of the image data on the basis of the color temperature identified by the identification unit; and a suppression unit configured to suppress a chroma of the image data applied adjustment by the adjustment unit, if image data of a specific light-emitting body is included in the image data, on the basis of color information of the specific light-emitting body applied adjustment by the adjustment unit, by eliminating color of the specific light-emitting body applied adjustment by the adjustment unit.

An image capture apparatus includes: an acquisition unit configured to acquire image data of a subject; an identification unit configured to identify a color temperature of light from the subject on the basis of the image data acquired by the acquisition unit; an adjustment unit configured to adjust a white balance of the image data on the basis of the color temperature identified by the identification unit; and a suppression unit configured to suppress a chroma of the image data applied adjustment by the adjustment unit, if image data of a specific light-emitting body is included in the image data, on the basis of color information of the specific light-emitting body applied adjustment by the adjustment unit, by eliminating color of the specific light-emitting body applied adjustment by the adjustment unit.

A spectrometric device for optical analysis of material composition, coating thickness, surface porosity, and/or other characteristics uses several monochromatic light sources—e.g., laser diodes—to illuminate a sample, with a camera taking an image of the sample under each source's light, and with the various images then being combined to generate a (hyper)spectral image. To address the difficulty in obtaining uniform illumination intensity across the illuminated sample area with solid-state light sources, the output from the light sources may be supplied to an integrating sphere (preferably after being combined within a fiber combiner), and then to a fiber bundle whose output ends are configured as a ring light (a ring of fiber ends directing light at a common spot). The camera may then focus on the spot, at which the sample may be placed for illumination and imaging.

An imaging apparatus includes: a controller that performs first synchronization control of outputting a first synchronization signal at a first timing after receiving an instruction of continuous imaging, outputting a second synchronization signal at a second timing after elapse of a first time period from the first timing, and outputting the second synchronization signal every time a second time period longer than the first time period elapses after the second timing; and an imaging unit that starts reading of a signal from an imaging element by a rolling shutter method at a third timing at which an input of the second synchronization signal is received after the second timing, and starts exposure of the imaging element by the rolling shutter method at a fourth timing before the third timing so that an interval between the fourth and third timings is equal to a length of an exposure time period.

An imaging apparatus includes: a controller that performs first synchronization control of outputting a first synchronization signal at a first timing after receiving an instruction of continuous imaging, outputting a second synchronization signal at a second timing after elapse of a first time period from the first timing, and outputting the second synchronization signal every time a second time period longer than the first time period elapses after the second timing; and an imaging unit that starts reading of a signal from an imaging element by a rolling shutter method at a third timing at which an input of the second synchronization signal is received after the second timing, and starts exposure of the imaging element by the rolling shutter method at a fourth timing before the third timing so that an interval between the fourth and third timings is equal to a length of an exposure time period.

An imaging apparatus according to the present invention includes an imaging element and a controller configured to detect presence/absence of a flicker. The controller performs control such that light receiving units of predetermined rows of different groups in a plurality of groups acquired by dividing a pixel area into predetermined numbers of rows accumulate the electric charges for a unit time shorter than a flicker period in accumulation periods of the same timing, the light receiving units of a plurality of different rows of the same group in the plurality of groups accumulate the electric charges for the unit time in accumulation periods of mutually-different timings, and a total time of the accumulation periods in which the light receiving units of the plurality of different rows of the same group accumulate the electric charges is a predetermined time longer than the flicker period.

A device includes a charge variation sensor having at one or more electrodes. The charge variation sensor, in operation, generates a charge variation signal indicative of changes in an electric or electrostatic charge induced on the one or more electrodes by an alternating current power source. Processing circuitry, coupled to the charge variation sensor, generates a frequency spectrum signal based on the charge variation signal and identifies a frequency of operation associated with the alternating current power source based on the generated frequency spectrum signal. A control signal is generated based on the identified frequency of operation. An image acquisition device sets an image acquisition frequency based on the control signal.

Included are a photometric unit configured to obtain respective photometric values of a plurality of photometry areas in an image capturing area, an operation unit configured to perform setting regarding continuous shooting and/or focus adjustment, a calculation unit configured to calculate a light quantity change characteristic of a photometric target based on the photometric values of the plurality of photometry areas, an adjustment unit configured to adjust exposure timing based on the light quantity change characteristic, and a control unit configured to change a method of calculating the light quantity change characteristic according to the setting regarding continuous shooting and/or focus adjustment, and to determine whether the exposure timing is adjusted based on the light quantity change characteristic.

A method of detecting and correcting flicker. A video stream of a scene at various instances of time is captured by an image capture device. A local spatio-temporal feature extraction technique is applied, by a processor, to regions of the capture scene within each frame. Candidate flickering region detection is applied, by a classifier, to identify candidate regions. Corresponding candidate regions are tracked over time to detect illumination differences within each analyzed region. An illumination correction technique is applied to the candidate regions where flickering is detected. A flicker-free video is output on a display device.

Devices and methods for adjusting an exposure window of a rolling shutter based on a frequency determined from ambient light gathered by a bimodal component are disclosed. Flickering light sources may cause artifacts in captured images, due to interplay between a period of a frequency of ambient light and the exposure window. An image capture device includes a semiconductor component configured to operate in two modes and an exposure window control component configured to compensate for the flickering based on a signal from the light source. In a sensor mode, the semiconductor component may operate to detect the frequency of ambient light. To avoid image artifacts, the frequency of the ambient light is analyzed and an exposure time is adjusted to an integer multiple of the period of the frequency such that exposure is matched to the periodic illumination of the flickering light source.