The High Dynamic Range Image resp. high contrast image or the HDR image is a digital image that can reproduce almost all brightness differences (heights and depths) in the reproduced area. Usual recordings with a low dynamic range are referred to, by contrast, as Low Dynamic Range Image. HDR pictures can be produced directly by special cameras with high dynamic range. It is also frequent to use 3D editing programmes to obtain perfectly balanced light situations. In the meantime, a usual procedure is also creating a HDR image from a combined bracket series with low dynamic range of the individual source image. The optimal representation of HDR images takes place on special editing devices such as cathode ray tube displays. These can reproduce small brightness differences, partly not perceivable by the human eye.

A HDR image shows picture details very exactly. Under- resp. over-exposure of a HDR picture is not possible per definition. The use of a High Dynamic Range Image is ideal for high-resolution image processing.

SmartRay makes use of these features for technical inspection. Thus, not even the verification of aluminium components with extremely big brightness differences does pose any problem. Disturbing reflexes on shiny surfaces and steep or angular contours are eliminated when the image is recorded.