estimate_sl_al_lrestimate_sl_al_lrEstimateSlAlLrEstimateSlAlLrestimate_sl_al_lr (Operator)

名称

estimate_sl_al_lrestimate_sl_al_lrEstimateSlAlLrEstimateSlAlLrestimate_sl_al_lr — （使用Lee和Rosenfeld算法）估计光源的倾斜度和表面的反射率。

签名

estimate_sl_al_lr(Image : : : Slant, Albedo)

描述

estimate_sl_al_lrestimate_sl_al_lrEstimateSlAlLrEstimateSlAlLrEstimateSlAlLrestimate_sl_al_lr estimates the SlantSlantSlantSlantslantslant 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 ImageImageImageImageimageimage, i.e. the percentage of light reflected by the surface, using the algorithm of Lee and Rosenfeld.

注意

The AlbedoAlbedoAlbedoAlbedoalbedoalbedo is assumed constant for the entire surface depicted in the image.

执行信息

Multithreading type: reentrant (runs in parallel with non-exclusive operators).
Multithreading scope: global (may be called from any thread).
Automatically parallelized on tuple level.

参数

ImageImageImageImageimageimage (input_object) singlechannelimage(-array) → object (byte)

Image for which slant and albedo are to be estimated.

SlantSlantSlantSlantslantslant (output_control) angle.deg(-array) → (real)

Angle between the light sources and the positive z-axis (in degrees).

AlbedoAlbedoAlbedoAlbedoalbedoalbedo (output_control) real(-array) → (real)

Amount of light reflected by the surface.

结果

estimate_sl_al_lrestimate_sl_al_lrEstimateSlAlLrEstimateSlAlLrEstimateSlAlLrestimate_sl_al_lr always returns the value 2 ( H_MSG_TRUE) .

可能的后继算子

sfs_mod_lrsfs_mod_lrSfsModLrSfsModLrSfsModLrsfs_mod_lr, sfs_orig_lrsfs_orig_lrSfsOrigLrSfsOrigLrSfsOrigLrsfs_orig_lr, sfs_pentlandsfs_pentlandSfsPentlandSfsPentlandSfsPentlandsfs_pentland, photometric_stereophotometric_stereoPhotometricStereoPhotometricStereoPhotometricStereophotometric_stereo, shade_height_fieldshade_height_fieldShadeHeightFieldShadeHeightFieldShadeHeightFieldshade_height_field

模块

3D Metrology

算子