Vision Basics - Mode Binary Representation of Sample Matrix There are actually two threshold values that can be used together to isolate a range of intens- ity values. When the 2 nd threshold is given a value other than 0, all pixels with values between the 1 st and 2 nd threshold are white. Setting Both Binary Thresholds shows the sample array with the threshold set to 34 and 2 nd threshold set to 89. Setting Both Binary Thresholds ACEUser's Guide, 3.6.x, 18316-000 Rev A Page 309