Histogram (Image»Histogram)
Counts the total number of pixels in each grayscale value and graphs it. You can perform a histogram on an entire image or selected regions of the image. Use the ROI tools from the toolbar to select regions in an image.
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Note The Histogram function analyzes the image and displays information for you to review. This function does not modify the image. |
- Histogram—Graphical representation of the quantitative distribution of pixels per grayscale value.
- Minimum Value—Smallest pixel intensity found in the image or selected regions in the image.
- Maximum Value—Largest pixel intensity found in the image or selected regions in the image.
- Mean Value—Mean value of intensities found in the image or selected regions in the image.
- Std Deviation—Standard deviation of the pixel intensities.
- Number of Pixels—Number of pixels used to calculate the histogram.
- Mapping mode—Specifies if the vertical scale (y-axis) of the histogram is linear or logarithmic.
- Linear—Displays the histogram in a linear scale.
- Logarithmic—Displays the histogram in a logarithmic scale. Use the logarithmic scale if the linear values are too small to view.