6 modules - PI-VR GmbH

6.1 Scene» Image Processing» Tonemapping: Tonemapping offers the possibility to map the high dynamic rangerendering for display on an output device with lower dynamic range.• Tonemapper: Choose an algorithm to adjust the appearance of a 32-bitrendering. General parameters:· Reinhard Luminance: Uses the tone mapping methods based on Erik Reinhard’smethods. The tone mapping takes place based on the luminancevalues of a pixel. This way you receive the color information of a pixel.· Reinhard RGB: Uses the tone mapping methods based on Erik Reinhard’smethods. The tone mapping takes place for each channel of a RGB pixelseparately. Therefore, the bright pixels will be desaturated, as with adigital camera sensor.· Logarithmic Luminance: Uses a logarithmic mapping based on the luminancevalues. This mapping corresponds approximately to the humanperception. The color information will remain unchanged.· Logarithmic RGB: Uses a logarithmic mapping that affects each channel ofa RGB pixel separately. Bright pixels will be desaturated.· Filmic: Uses a s-curve mapping , that reproduces the behavior of a film.RGB channels will be mapped separately. Two parameters control thecourse of the s-curve:· Shoulder Strength: Controls the gradient in the area of bright pixels.· Toe Strength: Controls the gradient in the area of the dark pixels.• Exposure: Scaling factor for the brightness of the image.• Whitepoint: Sets the brightness value, which is mapped to the value 1.• Whitebalance: Defines the whitebalance value that affects the image in thepost processing procedure.» Color Correction:• Hue-Shift: Defines the hue-shift value.83