Abstract: A camera device includes a first filter configured to restrict a transverse wave component of incident light having light of a plurality of different wavelength bands generated based on birefringence in a car film from a vehicle to which the car film is adhered, a lens on which a vertical wave component of the incident light transmitted through the first filter is incident, a second filter configured to restrict a vertical wave component of the incident light in a visible region among the vertical wave component of the incident light imaged by the lens, and an imaging element configured to image the vehicle as a subject based on a vertical wave component of the incident light in a near-infrared region transmitted through the second filter.

Abstract: In installation work, a camera captures a vehicle including an occupant and a license plate of the vehicle in a view angle from an installation position of the camera and transmits, to the terminal, a captured image of the occupant and a captured image of the license plate in response to a setting request from a terminal. The terminal displays a setting screen including the captured image of the occupant and the captured image of the license plate, receives input of parameters including an operation mode of the camera and positional relationship information indicating a positional relationship between the camera and the vehicle according to manipulations of an operator, and transmits the input parameters to the camera. The camera derives and sets camera parameters corresponding to the operation mode based on the input parameters transmitted from the terminal.

Abstract: A camera device includes a first filter configured to restrict a transverse wave component of incident light having light of a plurality of different wavelength bands generated based on birefringence in a car film from a vehicle to which the car film is adhered, a lens on which a vertical wave component of the incident light transmitted through the first filter is incident, a second filter configured to restrict a vertical wave component of the incident light in a visible region among the vertical wave component of the incident light imaged by the lens, and an imaging element configured to image the vehicle as a subject based on a vertical wave component of the incident light in a near-infrared region transmitted through the second filter.

Abstract: In installation work, a camera captures a vehicle including an occupant and a license plate of the vehicle in a view angle from an installation position of the camera and transmits, to the terminal, a captured image of the occupant and a captured image of the license plate in response to a setting request from a terminal. The terminal displays a setting screen including the captured image of the occupant and the captured image of the license plate, receives input of parameters including an operation mode of the camera and positional relationship information indicating a positional relationship between the camera and the vehicle according to manipulations of an operator, and transmits the input parameters to the camera. The camera derives and sets camera parameters corresponding to the operation mode based on the input parameters transmitted from the terminal.

Abstract: An amount of change calculated by an amount-of-change calculator (11) is stored in an amount-of-change storage (12), and an amount-of-change comparison unit (13) compares an amount of change between a frame one frame before a frame whose gradation is to be corrected and a frame before that frame. If the amount of change is larger than a predetermined value, correction value data of the frame one frame before is not used, but a correction value table of a frame before the change is chosen and read from a correction value calculator (15). If the amount of change is equal to or smaller than a predetermined value, a correction value table of the frame one frame before which did not changed much is read from the correction value calculator (15) and is written to a lookup table (16). Correction data (level data) is read from the lookup table (16) at an address and is outputted as a gradation-corrected luminance signal.