Standalone Camera Calibration NOTE : The offset of the camera from the robot or other equipment is not part of this cal- ibration. That information is obtained during the robot-to-camera calibration. Standalone calibration should be performed first. See ACE Sight Calibrations on page 625. Calibration with a Grid of Dots The camera calibration usually uses a grid of dots target. A sample dot target file is provided with the ACE Sight installation. See See "Creating a Dot Target". NOTE : The sample target is intended for teaching purposes only; it is not a genuine, accur- ate vision target.
Because any error introduced into the vision system at this calibration will be carried into all following calibrations, the target should be as accurate as possible. Adept recommends using a commercial-grade target, available from suppliers such as: l Edmund Optics (edmundoptics.com, Fixed Frequency Grid Distortion Targets) or l Applied Image Inc (aig-imaging.com, Accu-Place TM Dot Pattern) Before Calibrating Correct lighting on the target is important to obtain accurate calibration. Before starting this calibration, make sure that the entire area covered by the camera field of view is within the robot work range, if required by your application.
If you have more than one camera installed, select the camera you want to calibrate: 1. Click Device, to highlight that field. 2. Click the drop-down arrow, to display the available cameras. 3. Highlight the camera you want to calibrate. 4. Click OK. The Vision Display Units field controls the image display from this source. The default is Mil- limeter. For most applications, this is the setting you will want. ACEUser's Guide, 3.6.x, 18316-000 Rev A Page 321