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Hello to all. I have an image and a ROI. I would like to get the minimun distance between the first edge and the last edge in horizontal position. See image attached. If every edges found are in color yellow I would like to get the distance between edges in red (minimun distance from last edge to last edge in horizontal direction. I have tried to use "IMAQ Clamp Horizontal Min VI" but this VI does't the option "from first to last edge" and the only way to get what I want is to play with contrast but it is not work for some of my images. So is there any way to get what I want? Here is the image. From fist edge to last edge I mean from left to righ, the first edge found and last edge found. Thanks a lot.