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Download Image Acquisition Toolbox User's Guide
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Using Properties on a VideoDevice System Object Note: This ROI value is 1-based. This differs from the videoinput object, the Image Acquisition Tool, and the From Video Device block, all of which are 0-based. To set a device-specific property, use this syntax: vidobj.DeviceProperties.Brightness = 150; You can see that the syntax for setting a device-specific property is to use dot notation with the object name, the DeviceProperties object, and the property name and then make it equal to the property value. Another example of a device-specific property is setting the frame rate for a device that supports it. vidobj.DeviceProperties.FrameRate = '30'; Note: Once you have done a step, in order to change a property or set a new one, you need to release the object using the release function, before setting the new property. 14-13
