Image Histogram ACEUser's Guide, 3.6.x, 18316-000 Rev A Page 499 Object Definition Maximum Grey-Level Highest grey-level value of all pixels in the tool region of interest that are included in the final his- togram. Pixels removed from the histogram by tails or thresholds are not included in this cal- culation. 0 = black; 255 = white. Grey-Level Range Range of grey-level values of the pixels in the tool region of interest that are included in the final his- togram. Pixels removed from the histogram by tails or thresholds are not included in this cal- culation. Grey-Level Range = Maximum Grey-Level Value - Min- imum Grey-Level Value + 1.
Median Median of the grey-level distribution of the pixels in the tool region of interest that are included in the final histogram. Pixels removed from the his- togram by tails or thresholds are not included in this calculation. Variance Variance of the grey-level distribution of the pixels in the tool region of interest that are included in the final histogram. Pixels removed from the his- togram by tails or thresholds are not included in this calculation. Standard Deviation Standard deviation of the grey-level distribution of the pixels in the tool region of interest that are included in the final histogram.
Pixels removed from the histogram by tails or thresholds are not included in this calculation. Mean Mean of the grey-level distribution of the pixels in the tool region of interest Mode Grey-level value which corresponds to the his- togram bin with the highest number of pixels. Image Height Height of the tool region of interest, expressed in pixels. Image Width Width of the tool region of interest, expressed in pixels. Image Pixel Count Number of pixels in the tool region of interest, before applying tails and thresholds.