button on the Image window.Use the Scale Image tool to adjust how the image intensities are scaled for display. Each wavelength is scaled to be displayed as 8-bits in the image window and the scale parameters determine how the range of intensities are mapped to the available 8-bits of displayed colors.
For example, if your image data intensities range from 0 to 10,000, the scale parameters determine the mapping of 0-10000 to the display range of 0-255. If the minimum scale is 500 and the maximum is 7000, all of the original data values less than or equal to 500 are displayed as zero; all values 7000 and above are displayed as 255. You can also create a non-linear scale by specifying an exponent.
Open Scale Image by clicking the Scale Image Intensities button on the Image window.
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Use |
To... |
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Wave |
Specify which wavelength you would like to scale. |
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Display Min/Max/Exp |
Show the current minimum, maximum, and exponent values applied to the image data to scale it for display. |
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Wave Min/Max |
Show the minimum and maximum values for the selected wavelength. |
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Section Min/Max/Mean |
Show the minimum, maximum, and mean values for the current Z section. |
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Show Histogram |
Turn the histogram display on or off. Note The histogram is a plot of the frequency of intensity values in the current image. If a single intensity value (like zero, for instance) has an abnormally large value, it is drawn with a dashed line and the histogram is re-scaled without consideration to this value. |
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Log |
Change between a linear and logarithmic view of the histogram. |
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Apply To |
Apply the scaling to the entire wave or just the current section. |
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The Scale Graph |
Graphically scale the image. |
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Restore Default Scale |
Restore the minimum and maximum scale values to the statistically-determined default values. |
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Done |
Close the Scale Image tool. |
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