B. Image Processing
The simplest form of digital image processing converts the digital data tape into a film image with minimal corrections
and calibrations. Then large mainframe computers are employed for sophisticated interactive manipulation of the data.
In the present context, overhead prospective are employed to analyse the picture. In electrical engineering and
computer science, image processing is any form of signal processing for which the input is an image, such as a
photograph or video frame; the output of image processing may be either an image or, a set of characteristics or
parameters related to the image. In the silent sound technology the output of this image processing is an audio record.
Most image-processing techniques involve treating the image as a two-dimensional signal and applying standard
signal-processing techniques to it. Figure 3 shows how image processing works in case of silent sound technology.