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Edge Detection without NI Vision

Hello! I am fairly new to labview so I'm sorry if this question was already answered. I am trying to implement edge detection on just a 2d array of data. I basically have a heatmap that should show a pretty uniform greyscale and corresponding intensity values. However, some of the heatmaps are showing patterns which also correspond to the 2d array of intensity values. I wanted to use edge detection to be able to parse through future heat maps/ intensity values and be able to automatically tell if there is an edge, but I do not have the NI Vision Development Module. I was wondering if anyone knew a way this might be possible. 

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An "edge" usually represents a large change in intensity (a high "gradient") as you move from pixel to pixel.  If you have a 2D array of numeric data, you should be able to compute differences between adjacent points, and see if you get a place where the change is significantly larger ...

 

Bob Schor

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