Television system for image analysis by isodensity lines using a minicomputer
G Barichello, S Beghini, G Novo, G. Zanella · Journal of Physics E Scientific Instruments · 1976
Describes a method of automatically coding various images by density lines using a television system on-line with a minicomputer. Essentially only the spatial coordinates of the points where a variable threshold level is equal to the video signal are digitized and stored. Therefore, all these points for a given threshold level on a television raster give one isodensity line. The accuracy of the isodensity lines depends chiefly on the type of television device used. Results are related by using the plumbicon tube XQ 1023 R (Philips).