Table of Contents
What is irradiance map VRAY?
In V-Ray, the term Irradiance map refers to a method of efficiently computing the diffuse surface Irradiance for objects in the scene.
What is light cache in VRAY?
Light caching (called “light mapping” in older versions of V-Ray) is a technique for approximating the global illumination in a scene. This method was developed originally by Chaos specifically for the V-Ray renderer. The light cache is built by tracing many, many eye paths from the camera.
What is global illumination in V-Ray?
Global illumination refers to lighting in a scene/environment that comes from light bouncing around and off objects (or the environment itself). Global Illumination (or GI) refers to the computation of this effect through computer graphics.
What is light cache in V-Ray?
How do you calculate irradiance?
Light power (mW) was measured with a (power meter) sensor area of 70.89×10-6 (m2). Then the irradiance of this light from UV lamp was calculated by dividing the light power with sensor area to get its irradiance in W/m2.
How is irradiance measured?
Solar irradiance measurements consist of global and/or direct radiation measurements taken periodically throughout the day. The measurements are taken using either a pyranometer (measuring global radiation) and/or a pyrheliometer (measuring direct radiation).
How is UV irradiance calculated?
What irradiance means?
Definition of irradiance 1 : radiance sense 1. 2 : the density of radiation incident on a given surface usually expressed in watts per square centimeter or square meter.
What is the irradiance map in V Ray?
The Irradiance map is in fact a collection of points in 3D space (a point cloud) along with the computed indirect illumination at those points. When an object is hit during a GI pass, V-Ray looks into the Irradiance map to see if there are any points similar in position and orientation to the current one.
What is the irradiance map viewer?
The irradiance map viewer can be used to view, merge, and save irradiance map files created by V-Ray. The Irradiance Map viewer tool allows you to navigate around a 3D projected version of a scene to view where GI samples were taken during the rendering process.
What is incremental add to current map in Vray?
Incremental add to current map – V-Ray uses the irradiance map that is already in memory and only refines it in places that don’t have enough detail. This mode is useful when compiling an irradiance map to render multiple views of a static scene or a fly-through animation.
How do I save the irradiance map after rendering?
If unchecked, the irradiance map is deleted when the rendering is complete and can not be saved manually afterwards. Auto save – Enables V-Ray to automatically save the irradiance map to the specified file at the end of the rendering.