Vision Basics Vision Basics The Vision Basics topics present a brief background of concepts that are needed when obtain- ing an image for use in a Adept system. Obtaining an Image A very brief overview of how digital cameras obtain an image, in three topics. Resolution Vision Basics - Resolution Mode Vision Basics - Mode Camera Calibration and Lighting Vision Basics - Calibration Using an Image - Computer Image Analysis The computer system uses the information extracted from the matrix of pixels to perform vis- ion tasks. The tools ACE Sight provides analyze the matrix and return information about object size, relative location, feature recognition, and object identification.
Overview of ACE Sight Vision Tools Blobs and Prototypes When ACE Sight examines the matrix of pixels returned by the camera, it looks for bounded regions. A bounded region is any contiguous section of pixels that is the opposite color from the background (and is within the minimum and maximum pixel limits). When a blob finder tool locates such a region, it reports that a Blob has been found and returns the information it discovered about the blob. Blob Analyzer Vision Basics - Resolution Pixel The basic unit of an image is a pixel (picture element). It is the smallest unit of information that a vision system can return.
The number of pixels a system can process determines the system’s resolution and affects the computer processing time needed to analyze an image. ACEUser's Guide, 3.6.x, 18316-000 Rev A Page 303