UVITEC – Cambridge
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the Gamma Adjust function reassigns the grey values of each pixel in the image according to the curve in
the following graph:
The above graph demonstrates the basic principles of gamma adjustment:
- Black (pixel value = 0) remains black at all gamma values.
- White (pixel value = full scale) remains white at all gamma values.
- Gamma values greater than one lift the darker areas of the original image into the brighter areas of the
new image.
A gamma curve is smooth: there are no unexpected jumps or cut-offs. This means that when viewing a
gamma adjusted image, you will be able to see the details (intensity differences) in both the black and
white areas of the image.
When the bright areas of these types of images are correctly exposed, the darker areas can be so dark
that they are in effect invisible. Gamma Adjust can remedy this problem. The gamma adjustment results in
a better display of detail by lightening the darker areas without burning out bright areas or lightening black
areas:
Axios
TM
Axios is a display filter which enhance the contrast and sharpness. Axios does not affect the raw data.
With Axios
TM
display
Without Axios
TM
display
