I have made HDR image by using Photoshop HDR Pro. I took several pictures with different shutter speed (EV -4,-3,-2,-1,0,1,2,3,4 ) using tripod. And integrate them at Photoshop CS6 by using HDR Pro.

HDRI Tips and Tricks/FAQ (or at least things to consider) By Kirt Witte http://employeepages.scad.edu/~kwitte/documents/HDRI/Witte_HDRI_Tips_Tricks_v10.pdf

In the paper named "Estimating Surface Reflectance Properties of a Complex Scene under Captured Natural Illumination", it explains the way to estimate the incident illumination in outdoor scenes. diffuse gray ball The reflectivity is (0.30…

Nikon SDK https://sdk.nikonimaging.com/apply/ Camera Control Pro 2 English : http://imaging.nikon.com/lineup/software/control_pro2/ Japanese : http://www.nikon-image.com/products/software/camera_control_pro2/

"Direct HDR Capture of the Sun and Sky". Jessi Stumpfel Andrew Jones Andreas Wenger Chris Tchou Tim Hawkins Paul Debevec http://ict.usc.edu/pubs/Direct%20HDR%20Capture%20of%20the%20Sun%20and%20Sky.pdf

Links "An Efficient Representation for Irradiance Environment Maps". Ravi Ramamoorth, Pat Hanrahan. http://graphics.stanford.edu/papers/envmap/ "Spherical Harmonic Lighting: The Gritty Details". Robin Green. http://www.research.scea.com/gd…

In this vacation, I read some books about "Colorimetry". I will introduce some books below. 色彩工学入門―定量的な色の理解と活用. 篠田博之, 藤枝一郎. ( This book is written in Japanese ). "High Dynamic Range Imaging, Second Edition: Acquisi…

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Principal Component Analysis (PCA) is used for compressing data of precomputed radiance transfer (PRT). In this article, I will explain how we can use PCA for computer graphics data by using slides of CPCA in SIGGRAPH 2003. First, we think…

Mean (平均) x_mean = ( \sigma_{1}^{n} ( x_i ) ) / n y_mean = ( \sigma_{1}^{n} ( y_i ) ) / n Variance (分散) s_x^2 = ( \sigma_{1}^{n} ( x_i - x_mean )^2 ) / n s_y^2 = ( \sigma_{1}^{n} ( y_i - y_mean )^2 ) / n Root-mean-square deviation (標…

This articles is the memo of the "Clustered Principal Components for Precomputed Radiance Transfer". 0. Compute the exiting radiance matrix M_p_ij at position p. To project SH basis onto the hemisphere, the least-squares optimal projection…

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It is said that SH is good to approximate the low frequency lights like diffuse indirect lighting.In Diffuse Precomputed Radiance Transfer (Jan Kautz) in SIGGRAPH 2005, there was a good figure which shows the quality of PRT based on the ba…