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转自KlayGE游戏引擎Reinhard早期的普遍做法是一篇叫做Photographic Tone Reproduction for Digital Images的论文,大家就用作者的名字称它为Reinhard tone mapping。这是个经验公式,把HDR到LDR的变换简单的描述了...

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Note how the Camera tone mapping method gives the image a more photographic look with higher contrast and a slight colour tint. Reinhard is the simplest to use, but once mastered, camera tone mapping can give a nice artistic feel to the renders. The Filmic tone mapper does a good job with achieving a bright look without burning out the whites ...
Mar 12, 2018 · Reinhard. 早期的普遍做法是一篇叫做 Photographic Tone Reproduction for Digital Images 的论文,大家就用作者的名字称它为Reinhard tone mapping。. 这是个经验公式,把HDR到LDR的变换简单的描述了出来。. 其中color是线性的HDR颜色,adapted_lum是根据整个画面统计出来的亮度。. MIDDLE ...
In this tutorial, we will learn how to create a High Dynamic Range (HDR) image using multiple images taken with different exposure settings. We will share code in both C++ and Python. What is High Dynamic Range (HDR) imaging? Most digital cameras and displays capture or display color images as 24-bits matrices. There are 8-bits […]
ReinhardLum : Type for implementing the Reinhard tone map with the luminance as the reference and keeping the original saturation (vividness: RGB ratio). Maps only the luminance information to the LDR space and then reproduces the original saturation. The saturation in the HDR space is also kept after tone mapping.
LogC colors with no, ACES, and Reinhard tone mapping. Compared to linear space Log C adds a little more resolution to the darkest values. It overtakes the linear value at roughly 0.5. After that the intensity rises quickly so the matrix resolution decreases a lot. This is needed to cover HDR values, but if we don't need those it's better stick ...
Reinhard suggested a tone-mapping operator in his paper, and until now many real-time systems and implementations are using it. Reinhard's approach is based on the Zone System devised by a famous American photographer Ansel Adams. Ansel Adams classified an input scene's luminance scale into eleven zones, mapping the darkest region to zone 0 ...
Two parameters may be set for the Reinhard Tone Mapping: these are Saturation level and Brightness factor.. Saturation level is the input intensity level that will be brought back to 1. Setting this parameter to a high value preserves high-intensity lights. Brightness factor enables the user to control brightness after processing. Setting this parameter to a high value leads to a light final ...
Tone mapping pipeline. This post will focus on the third box, Tone mapping operators. A tone mapping operator is a curve/function that takes a luminance value (or an individual color channel) as input and spits out a value between [0, 1], which is what our display expects. Additionally, it is meant to produce an image that better invokes the ...

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