PanelScan Integration Guide Vision Setup This tab contains: settings for the camera’s exposure time and gain, parameters that control the search area size for the marks on the boards, and information for setting up PanelScan Wide with two cameras. Exposure Time – The camera is set to expose each line of the image for 170 μs by default. This matches the speed of about 9” per second, achievable on most conveyors. This produces an image that has the same aspect ratio in X and Y. If the application requires that the conveyor run at a different speed, this value must be changed to achieve the proper aspect ratio.
Note that significantly increasing or decreasing the exposure time will also significantly increase or decrease the brightness of the image. If the image becomes unusable, then Gain can be used to compensate. Gain – This is set to 1.25 by default. The range of values for Gain are 0 to 2.5 . Increasing Gain makes the image brighter, and decreasing Gain makes the image darker. Search Width +\– This value represents the extra width in pixels the search window for each symbol becomes after training. If the symbol is found to be 300 pixels wide , the search window will increase on each side by the amount defined on the Vision Setup tab.
This adjustment can be used to compensate when you are unable to predict where labels will be positioned on boards and panels. Search Height +\– This value represents the extra height in pixels the search window for each symbol becomes after training. If the symbol is found to be 300 pixels high , the search window will increase at the top and bottom by the amount defined on the Vision Setup tab. This adjustment can be used to compensate when you are unable to predict where labels will be positioned on boards and panels, and when there is any inconsistency in conveyor speed. 27 Copyright © 2019 Omron Microscan Systems, Inc.