Microprocessor-controlled photometric evaluation of high-speed cinematographic films

Abstract

To evaluate cinematographic films of the growth of slip lines on metal crystals during tensile deformation an inexpensive device controlled by a microprocessor has been designed. During evaluation the system corrects for frame-to-frame movement of the object, measures the photographic density, corrects for the sensitometric curve of the film and integrates across the intensity distribution of the slip line.