In order to measure the speed of image processing, an oscilloscope was connected to the parallel port of the vision computer. At the beginning of the image analysis, the machine vision computer triggered the oscilloscope time count. At the end of the image processing, a new signal stopped the clock, thus allowing us to measure the time that had elapsed between the two signals and to determine whether the system reached real-time requirements.
3.2.2. Selecting the way to represent the colour of the objects Pomegranates (Punica granatum, cv. ‘‘Mollar de Elche”) were used during the tests. The colour of their arils ranged from white–pink (predominant at the beginning of the season) to red–
brown (more frequent at the end of the season) (Fig. 4).