From image acquisition to output, how a vision system works.

This video is about the image process acquisition. In order to perform the intended task, such as measuring a dimension, revealing a defect, or reading a code, a vision system needs to acquire and analyze an image and search for the relevant information.

The purpose of a lens is to collect the light arriving from the illuminated object and recreate an image of that object on a light-sensitive ‘sensor.’

A camera is a sensing device that can capture, store, and transmit images. Light is focused through the optical system on a sensitive surface (or sensor) that converts light intensity into electronic information. This electronic information is converted into digital information and then either analyzed onboard the camera or transmitted to an industrial computer by a digital interface.

Proper lighting is crucial to maximize the contrasts between the features that need to be inspected or measured and those that should be ignored, such as irrelevant product features or variations due to changes in ambient conditions.

The software program analyses the digital image and extracts the information needed to perform the intended application task. This operation could happen onboard the camera or on an industrial computer where the software is installed and receives the image transmitted by the camera.