Hello,
The array that is referred to in the description is the datatype of the output, itself. Region Reports is an array where each element of the array contains information about a given region within the image. These regions are defined by the Image Mask input to the function. Each window that is left by the mask represents a region. The Region Reports output contains the following information: mean pixel value, standard deviation, minimal pixel value, maximal pixel value, the area of the region based upon any calibration that has been imposed, etc. If no mask has been used, then there will be a single element to the Region Reports output array which contains the same information, only for the entire image.
If you take this mask template and apply it to the Image Mask input of IMAQ Quantify, then you will get the mean pixel value for every region that is exposed by the mask. Each of these regions will be a separate element in the above described Region Reports output.
I hope that clarifies the use of the function. If you have any additional questions, please let me know.
Regards,
Scott R.
Applications Engineer
National Instruments
Scott Romine
Course Development Engineer
National Instruments