METHOD FOR IMAGING OF SPECTRAL ATTENUATION AT A NUMBER OF WAVELENGTH BANDS

摘要

Invention relates to spectral imaging, in particular to imaging of spectral reflectance distribution at a number of fixed wavelengths bands by means of single RGB image data set. In the proposed method for obtaining several spectral reflectance images the spectral attenuation images are extracted from a digital RGB image data array at wavelengths corresponding to the spectral lines of polychromatic illumination spectral wavelengths, providing photo capture linearity using the reference of the reflector and taking into account photos receiving sensitivity of the spectral bands overlap. The reflectance spectral attenuation is calculated for each image pixel or group of pixels using a calibrated grey reference reflector, and at all wavelengths of light reflection coefficient is less than the white of the reference, and the value is close to the largest reflection coefficient of the displayed object area.