Computer processing of some surface images of technical objects after influence of the high temperature conditions

Computer processing of the image of surface of operating gas turbine blades was proposed in order to make the method of the evaluation of the condition of these blades more objective. The dependences and connections between the degree of blade material overheating and the colour of analyzed surfaces were shown on the basis of images registered in visible range of electromagnetic wave (digital image – Charge Coupled Device matrix). The proposal of methodology to assign the overheated areas on the blade’s surface in order to assess the range (of degradation) of thermal usage of the blade and to forecast it's working resources, might be useful to monitor the situation in the operating conditions. Moreover in the article the problematic of acquisition of the form digital images dates was presented by showing physical basis of analysis of reflected signal from metallic surface are showed in aspect of recording by photoelectric light sensor (matrix CCD).