VidCalc is a calculator to determine the image size on a monitor of an object observed by a video camera.
A video camera is often part of a surveillance system. In the
phase the proper lens must be seclected, so that an object of a certain
size will be shown large enough on the monitor. The VidCalc calculator
shown below calculates the image size of an object of given height or
width for a given distance from the camera.
The image size is calculated as a percentage of the CCD chip dimension. The same percentage normally applies for the relative size of the object on the full screen or in the display window. It enables a judgement whether the object's image is shown large enough.
Ingo Harre, Bremen, Germany, Content last modified on 2009/04/25