Looking back upon the history of photogrammetry, in short, it seems that in quantitative photogrammetry, the weight had been poured into the determination of the image position.
But in recent years, quantitative use of digitalized information of pictures has developped more rapidly when the validity of information recorded by photo was recognized more, and it seems which is developping to wide shere as characteristic information of the image position from narrow sphere as determination of the image position.
Recently, this author has thought that quantitative information of the image position is useful in many fields as civil engineering, medical science, agriculture, and physical sciences, and has executed to densito-measurement of the X-ray photograph, photo of soot and smoke of factories, lights and shades on map and others.
However, it is hard that pattern recognition of the pictures are expressed only by lights and shades element. This paper express pattern recognition of a few colour tone.

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This paper describes the infrared camera (thermal camera) principles and the camera's recent progress. The accomplishment of thermal imaging with real-time picture presentation represents a significant advance in nondestructive testing. Today infrared cameras are used for various purposes; thermal analysis of electronic equipment, search for thermal pollution, diagnostic exploration, geological survey, etc.

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