Depth Invariant Reflectance Estimation
نویسنده
چکیده
Spectral reflectance is often derived from a sequence of images acquired under different, narrowband, infinitely far away illuminants, which means their intensity is constant throughout the scene. When small LEDs, located close to the target are used the light intensity becomes scene depth dependent. We propose to use an RGB+depth camera which lets us model the spatial light intensity falloff and consequently reliably recover scene reflectance irrespectively of the object’s distance to the light source. The algorithm including the effects of illuminant non-uniformities allows us to achieve RMS error performance comparable to systems using distant light sources.
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