Physically-Accurate Fur Reflectance: Modeling, Measurement and Rendering

1. Measured Raw Reflectance data

Each link is a .txt file containing lines in the following format:

phi theta value

where theta and phi are longitudinal and azimuthal incident angles, respectively. Note that, both theta and phi are using coordinates of the gantry, where theta in [40, 80] maps to [50, 10] degrees and phi in [70, 290] maps to [-20, 200] degrees, following the notations in our paper. If a value cannot be measured, it shows '?'.

The plots show logarithm values.

Bobcat		Cat
Deer		Dog
Human		Mouse
Raccoon		Sprningbok
Rabbit

2. Precomputed Scattering Profiles C^N and C^M

Both C^N and C^M are 1D profiles for 3D sets of parameters, so they are essentially 4D tables. We provide the accurate pre-computed data without compression here:

Download (620 MB)

Here is a code snippet showing how to read the scattering profiles. Should be very easy to understand.

// Number of bins
#define NUM_SCATTERING_INNER 64
#define NUM_H 64
#define NUM_THETA 64
#define NUM_G 16
#define NUM_BINS 720

// Storage
float scattered[NUM_SCATTERING_INNER][NUM_H][NUM_G][NUM_BINS];
float scatteredDist[NUM_SCATTERING_INNER][NUM_H][NUM_G][NUM_BINS];
float scatteredM[NUM_SCATTERING_INNER][NUM_THETA][NUM_G][NUM_BINS];
float integratedM[NUM_SCATTERING_INNER][NUM_THETA][NUM_G][NUM_BINS];

void initialize(const char *medullaFilename) {
    // Read precomputed medulla profiles (azimuthal)
    FILE *fMedullaN = fopen((std::string(medullaFilename) + "_azimuthal.bin").c_str(), "rb");
    fread(scattered, sizeof(float), NUM_SCATTERING_INNER * NUM_H * NUM_G * NUM_BINS, fMedullaN);
    fread(scatteredDist, sizeof(float), NUM_SCATTERING_INNER * NUM_H * NUM_G * NUM_BINS, fMedullaN);
    fclose(fMedullaN);

    // Read precomputed medulla profiles (longitudinal)
    FILE *fMedullaM = fopen((std::string(medullaFilename) + "_longitudinal.bin").c_str(), "rb");
    fread(scatteredM, sizeof(float), NUM_SCATTERING_INNER * NUM_THETA * NUM_G * NUM_BINS, fMedullaM);
    fread(integratedM, sizeof(float), NUM_SCATTERING_INNER * NUM_THETA * NUM_G * NUM_BINS, fMedullaM);
    fclose(fMedullaM);
}