[Radiance-general] vta 2 vth

[Lars O. Grobe]

Hi Mehlika,

what exactly do you want to achieve? The command you quoted from Greg's
mail does not change the projection (or view-type). It corrects for the
weigth of luminances according to their angle from the optical axis (or
the view-direction of the sensor) when contributing to the illuminance
of a point, which is also known as the cosine law. So you can expect a
fall-off. Do you want to change the projection of an existing image?

Lars.