Interactive contrast enhancement using an electronic hardware system
A.A.D. Cañas · Journal of Physics E Scientific Instruments · 1984
An electronic system for the enhancement of video image contrast in real time is described and examples of its application are shown. The system achieves high speed and flexibility through the use of microprocessor-controlled digital hardware, rendering it useful as an interactive tool for image processing at relatively low cost. Several stretching techniques are demonstrated, including an interactive method whereby an elaborate contrast transfer function may be specified manually.