Estimate the slant of a light source and the albedo of a surface.
estimate_sl_al_zc estimates the Slant of a light source, i.e. the angle between the light source and the positive z-axis, and the albedo of the surface in the input image Image, i.e. the percentage of light reflected by the surface, using the algorithm of Zheng and Chellappa.
The Albedo is assumed constant for the entire surface depicted in the image.
|
Image (input_object) |
image(-array) -> object : byte |
| Image for which slant and albedo are to be estimated. | |
|
Slant (output_control) |
angle.deg(-array) -> real |
| Angle of the light sources and the positive z-axis (in degrees). | |
|
Albedo (output_control) |
real(-array) -> real |
| Amount of light reflected by the surface. | |
estimate_sl_al_zc always returns the value 2 (H_MSG_TRUE).
estimate_sl_al_zc is reentrant and automatically parallelized (on tuple level).
sfs_mod_lr, sfs_orig_lr, sfs_pentland, phot_stereo, shade_height_field
Tools
