Camera device, color calibration method, and program

摘要

A camera device (1) includes: an imaging unit (2) having a complementary color filter; a color temperature estimating unit (8) that estimates a color temperature on the basis of a video signal obtained from the imaging unit (2); a color parameter calculating unit (9) that calculates a color parameter value corresponding to the estimated color temperature; and a color calibrating unit (7) that performs color calibration using the calculated color parameter value. The color parameter calculating unit (9) calculates the color parameter value corresponding to the estimated color temperature on the basis of color parameter values (a first color parameter value and a second color parameter value) at two reference color temperatures (a first color temperature 2000 K and a second color temperature 3200 K). This allows performing color calibration with high color reproducibility using suitable color parameter values according to a change in an illumination condition as well as allows substantially reducing an amount of data required to determine the suitable color parameter values.

主权项

1. A camera device comprising:
an imager; a color temperature estimator that estimates a color temperature on the basis of a video signal obtained from the imager; a color parameter calculator that calculates a color parameter value corresponding to the estimated color temperature on the basis of a first color parameter value and a second color parameter value, which are color parameter values at a first reference color temperature and a second reference color temperature; a color calibrator that performs color calibration using the calculated color parameter value; a movement detector that detects a moving object in an image captured by the imager; and a color parameter controller that suppresses, when the moving object is detected, changing of a color parameter value used for the color calibration from a color parameter value corresponding to a standard color temperature to the calculated color parameter value.