Patent ID: 8655060

Claim:
A night-scene light source detecting device for determining whether an image is picked up under irradiation by specific light sources in a night scene or not, comprising: a pixel value obtaining unit configured to obtain a pixel value of each of pixels in an input image; a night-scene-feature extraction unit configured to be connected to the pixel value obtaining unit, and be provided for extracting a zone area of a mean corrected-brightness value and a high corrected-brightness value of the input image as two night-scene features on the basis of the pixel value of each of the pixels in the input image obtained by the pixel value obtaining unit; a night-scene image detection unit configured to be connected to the night-scene-feature extraction unit, and be provided for determining that the input image is either a night-scene image or a non-night-scene image on the basis of the two night-scene features extracted by the night-scene-feature extraction unit; a specific color detection unit configured to be connected to the night-scene image detection unit, and be provided for detecting whether each of the pixels in the night-scene image detected by the night-scene image detection unit belongs to a specific color or not; and a night-scene light source determining unit configured to be connected to the specific color detection unit, and be provided for determining whether the night-scene image is picked up under irradiation by specific light sources in night scene or not on the basis of the result of the specific color detection of the specific color detection unit.