Texture database
We
have captured a considerable number of images of surface textures
illuminated under a wide variety of conditions. These are available
in our database. Basically, we used real textures commonly found in
our every day life. For example, simple textures based on different
cloth, paper, etc, and other primitives of foods such as beans,
lentils, spaghetti, chips, etc.
For
each texture sample two photometric sets composed of 4 images each
are available. The two sets were captured at two different distances;
distance A and distance B (longer than A). All photometric sets
consisted of 4 images lit at an elevation angle of 55º with 4
different tilt angles 0º, 90º, 180º and 270º. In
addition to the 4 images used in the photometric sets, different
images for each surface taken at the two distances were captured for
testing. Thirteen surfaces were captured using 12 illuminant tilt
angles between 0º and 360º incremented by steps of 30º.
The remaining surfaces were captured using 24 illuminant tilt angles
between 0º and 360º incremented by steps of 15º. It is
important to state that the lights or the object position were not
changed when the distance of the sensor was changed.
fig.Illumination setup
Textures
The experiments of this work are implemented using twenty five physical texture samples, each
imaged with an illumination tilt angle between 0° and 360°. In the following one image of every
texture illuminated with an elevation angle of 55º with 0° tilt is shown..
Pasta (T1)
[ distance a / b ] |
Chips (T2)
[ distance a / b ] |
Cloth (T3)
[ distance a / b ] |
Cloth (T4)
[ distance a / b ] |
Sponge (T5)
[ distance a / b ] |
Sponge (T6)
[ distance a / b ] |
Brick (T7)
[ distance a / b ] |
Brick (T8)
[ distance a / b ] |
Bread (T9)
[ distance a / b ] |
Rice (T10)
[ distance a / b ] |
Pasta (T11)
[ distance a / b ] |
Paper (T12)
[ distance a / b ] |
Cloth (T13)
[ distance a / b ] |
Paper (T14)
[ distance a / b ] |
Chickpeas (T15)
[ distance a / b ] |
Cornflakes (T16)
[ distance a / b ] |
Peanuts (T17)
[ distance a / b ] |
Sunflower seeds (T18)
[ distance a / b ] |
Paper (T19)
[ distance a / b ] |
Pistachios (T20)
[ distance a / b ] |
Beans (T21)
[ distance a / b ] |
Beans (T22)
[ distance a / b ] |
Lentils (T23)
[ distance a / b ] |
Beans (T24)
[ distance a / b ] |
Pasta (T25)
[ distance a / b ] |
|
