Which one of the following is the principal function of an Intelligent Camera ?

An Intelligent Camera (also known as a smart camera) is a self-contained, standalone vision system that integrates an image sensor, a processor, and communication interfaces. Unlike a standard camera that simply captures and transmits raw video signals to a computer for analysis, an intelligent camera performs on-board processing.

The principal function of such a device is to extract application-specific information from the captured images (such as identifying defects, reading barcodes, or recognizing faces) and then trigger automated actions or output data based on that analysis. While it can be applied in security contexts (as mentioned in options B, C, and D), these are specific use cases. The fundamental technical definition of an intelligent camera is its ability to process and interpret visual data internally to provide high-level information rather than just raw images.