IMPROVEMENT OF IMAGES OBTAINED BY THE METHOD OF DIFFERENTIAL MULTISPECTRAL IMAGING
The article discusses the improvement of differential multispectral imaging. Processing methods improving the obtained differential images are considered. A set of images obtained by means of a multispectral television system with a set of standard light filters having spectral characteristics in wide areas of light flux registration and corresponding spectral boundaries for RGB components of a colour image is investigated. The process of obtaining a colour image from the corresponding differential images is simulated. Examples of the obtained images are given. The quality of colour reproduction and colour saturation of text objects is estimated with additional processing of differential images by the algorithm of contrast-limited adaptive histogram alignment. The results of computer simulation for the purpose of comparative evaluation of the obtained images are discussed. It is concluded that it is expedient to use additional processing of difference spectral images by contrast-limited adaptive histogram alignment before linear brightness correction in order to improve their quality.