estimate_tilt_lr ( Image : : : Tilt )

Estimate the tilt of a light source.

estimate_tilt_lr estimates the tilt of a light source, i.e., the angle between the light source and the x-axis after projection into the xy-plane, from the image Image using the algorithm of Lee and Rosenfeld.


Parameters

Image (input_object)
image(-array) -> object
Image for which the tilt is to be estimated.

Tilt (output_control)
angle.deg(-array) -> real
Angle between the light source and the x-axis after projection into the xy-plane (in degrees).


Result

estimate_tilt_lr always returns the value TRUE.


Possible Successors

sfs_mod_lr, sfs_orig_lr, sfs_pentland, phot_stereo, shade_height_field



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