Easy3DPhotometricStereo

Support

Required licenses

Easy3D

Recommended images

The images from the folder Sample Images\3D\Easy3DMatch\E3DMatchPointCloudMerger

Location

[…]C:\Users\Public\Documents\Euresys\Open eVision 25.02\Sample Programs
\[LANGUAGE] samples\3D Processing\Easy3DPhotometricStereo

C++:

C:\Users\Public\Documents\Euresys\Open eVision 25.02\Sample Programs\MsVc samples\3D Processing\Easy3DPhotometricStereo
C#:

C:\Users\Public\Documents\Euresys\Open eVision 25.02\Sample Programs\MsVcs samples\3D Processing\Easy3DPhotometricStereo
  These links work only if you installed the sample programs in the default folder together with Open eVision.

Purpose

This sample program demonstrates how to:

□ Apply photometric stereo to several images to retrieve their albedo, gradients, curvatures or height map.

Code highlights

Use the recommended images:

□ Calibration: the 4 calibration_* files.
□ Sample: either the 4 object2_* or the 4 shoe_* files.
1. Calibrate the imager from images of a sphere and retrieve a score. 
calibrationScore_ = photometricStereoImager_.CalibrateFromSphere(rois);
2. Compute the intermediary photometric stereo results from the images of the object In a general content, the term object should be understood with the meaning of a class instance. In EasyObject, an object is a maximally-sized area of adjacent connected pixels belonging to the layer foreground.. 
photometricStereoImager_.Compute(rois);
3. Compute the mean curvatures and retrieve them in an EImageBW8 with high contrast. 
meanCurvHighContrast_ = photometricStereoImager_.ComputeMeanCurvatures(EPhotometricStereoContrast.HighContrast));