METHOD FOR DETERMINING contrast of the subject in the visible wavelength range OPTICAL RADIATION

摘要

1. A method for determining the contrast of the object in the visible wavelength range of optical radiation, comprising: measuring over a period of time using a luminance meter with the corrective optical filter and exchangeable diaphragms brightness of the object at its geometric center and background luminances of individual pixels arranged in a perimeter of the object, and calculating the magnitude contrast KPO formula: wherein B- object brightness; - background brightness adjacent to the object, which is calculated by the formula: wherein B- brightness i-th background portion, characterized in that the brightness of the object B and fonaizmeryayutsya at the same time by the processing program editing graphics PC digital frame obtained using a long-focus optical system with a digital high razresheniya.2 photorecording device. A method according to claim 1, characterized in that the brightness of the object and the background are determined by averaging the luminances of pixels within the boundaries of the object and background areas on the digital frame target environment based on the actual configuration of the object, the background area is limited to a rectangle with dimensions greater than twice the highest the height and width of the object.