Device for optical examination of objects, has maximum stable external region detection unit, which is connected to selection unit for determining location of predetermined image areas of target object

摘要

The device with which the digital images generated from the objects (1) are fed to a selection unit (3) and are evaluated in an evaluation unit (6). A maximum stable external region detection unit (4) is connected to the selection unit for determining the location of the predetermined image areas of the target object (2). The predetermined target image areas are converted into a number of binary images by using different continuous changing threshold values of the image illumination values. The selection unit is connected to a histogram creator (5) creating histogram for detected illumination.