In data-type image processing, high demands are made on a very fast performance of the image-associated operations. A way of achieving a high processing speed is to use units with an integrated unit solution comprising both a camera in the form of a photodiode matrix and an image processor. Such an arrangement is known from, e.g., SE, B, 431 145 which presents an image processor which contains a device able to indicate the image dots belonging to a connected object, and produces a binary signal corresponding to the object when the relevant image dot, on the one hand, meets a condition specific to the object, and, on the other hand, is indicated as entering the object, or when the closest adjacent image dots are distinguished. By means of this known technique the need is reduced for a serial output of image data, and a substantially reduced amount of information is obtained which, with less time consumption than for the known image processing systems, can be output for further image processing.
Another example of corresponding parallel signal processing is described in Swedish Patent No. 9001556-1. The intention here is to be able to carry out computations on radar signals in addition to image processing.
A drawback with the known technique is that the known processors cannot perform so-called arithmetic global operations with the same efficiency, for example determine the centre of median for every object in a read-in vector. In the known device, there takes place with this type of operation a serial outputting of image data which, in per se time terms, reduces the advantages of the fast image processors.