After that the threshold.vi, GRAYSCALE U8 type IMAQ image turns into a completely black image.

I want a threshold, the image of u8 after equalize.vi, but the result is the image turns into an image.before completely black equalize.vi, i use histogram.vi and the interval is (0,0) .where is evil? I really appreciate your help.

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Unless you enter a value in the entry 'Replace the value' threshold IMAQ, your output pixel values will be 0 and 1.  In a grayscale image, you will not be able to see anything.  Try to define the 'replace' value to 255 and see if the data appears.  Here's a note from the help file on this function.

Note  Use a binary palette when you see an image that a threshold was applied in mode replace. However, what range to use for viewing depends on the replacementvalue. For example, viewing a picture of threshold could be achieved with a palette of gray. However, in this case, please use a replacement value of 255 (white) to better see image of threshold.

Tags: NI Hardware

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