Doing Time Adaptation
With Time adaptation, you can generate an AVI file which includes successive images seen by a human adapted to a specified luminance level L0 and seeing the current luminance map.
If the difference between the luminance L0 and the mean luminance of the map is high, it takes some time for the observer to adapt to the new luminance.
The AVI file shows the image variation perceived by the observer during this time.
Previous Adaptation Luminance
In Previous adaptation luminance box, you must type the luminance value of the time adaptation area with L0 luminance in Cd/m².
Filename
In Filename box, you must browse the path and type the name of the AVI file.
If needed, you can select the Flip vertically check box.
Adaptation
You must click Adaptation to generate the AVI file.
If the observer is adapted at a high luminance and observes a luminance map with a low mean luminance, the time adaptation is called dark adaptation and the adaptation can take until thirty minutes. That’s why the time of the AVI file is compressed, the real time is displayed in the left top of the AVI.
If the observer is adapted to a low luminance and observe a luminance map with a high luminance the time adaptation is called light adaptation and takes few seconds.
The first image of the AVI file shows the previous luminance adaptation state and the mean luminance value of the current luminance map.
