FAQs

How is Calculated Luminance Value?

The luminance in Virtual Human Vision is calculated thanks to the V(λ) curve that is not the same in day or night vision. When looking to bright object in black background, the vision mode is automatically set to scotopic (night vision). In Virtual Photometric Lab, the luminance is always calculated thanks to the photopic (day vision) V(λ) whatever the scene.

To get the same luminance values between Virtual Human Vision and Virtual Photometric lab, the vision mode have to be photopic and this can be forced by evaluated the vision on the maximum value of the map (See in the vision parameter).

How to Avoid the Change of the Maximum Value when Changing the Size of the Surface in Virtual Photometric Lab?

Click View, Interpolate values to disable the option.

Why does the Launch of Virtual Reality Lab Take Time?

At the first launch, after a drivers update or a change of graphics cards, it happens that the launch of the Virtual Reality Lab takes time.

Why do I Have Strange Results with Ray Files Downloaded from a Manufacturer Website?

When you download ray files from manufacturer website, you need to open this ray file with the Ray File Editor and use the mix all rays function. Thanks to this you will get better results and preview.

Why do I have a 100% Precision on my Map?

When you have gathering on a direct simulation, precision value is always to 100% because it does not have any meaning.

How to Get a Hight Quality Result for an Inverse Monte-Carlo Simulation ?

Select Standard filtering for .xmp results.