Database of Images with Specular Highlights (SPEC-DB)

Slide Show

The slide show will show the entire images of the Purdue RVL SPEC-DB. Please preview the images, while this feature of the slide show scans the entire images. If you wish to download the entire image database, please contact us.

Press on AutoPlay to view slide show

Image Slideshow

Download Instruction:

1. Press the "Stop" botton when the image to be downloaded is displaying.
2. Click the right mouse botton on the image.
3. Select "Save picture as ..." and copy the image (.JPG) into your folder.
(If you need images in other formats i.e., ".tiff, .rgb, or .raw" files, please contact me)
If you need the entire images from the SPEC-DB database, please contact us.

As shown above (Slide Show) for each object, a set of three different images were photographed under three different illumination conditions:

Diffuse Light: A diffuse light is commonly defined as a light to which one cannot attribute any specific or unique source. To achieve this lighting condition, a large translucent white umbrella wa used right above the objects to block any direct incoming light. If you save these sets of images correspong to this lighting condition, they commonly have "00" in their file names (i.e., "xxx00.jpg" or "xxx00.tiff").

Ambient Light: By ambient light, we mean the lighting condition obtained by the direct exposure to multiple light sources. In that case, we used a set of 20 fluorescent light fixtures on the ceiling (please contact if you need further informatgion on lighting geometry). These light fixtures are located as close as 5 feet and as far as 15 feet from the object. The images corresponding to this lighting condition have "11" in their file names (i.e., "xxx11.jpg or "xxx11.tiff").

Direct Light: By direct light, we mean the lighting condition obtained using a single, intense light source. Depending on the reflectance properties of the objects (glossy or dull), and in addition to the ambient light described above, we select one out of two possible direct light sources to create bright specular regions: 1) Additional two fluorescent light bulbs located approximately 1.5 feet away from the object; 2) An incandescent spotlight located at approximately same distance from the object. The images taken under this illumination condition have "22" in their file names (i.e., "xxx22.jpg" or "xxx22.tiff").