image processing - 3D Feature extraction using Windows Kinect in MATLAB -

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i trying extract 3d coordinates of object using kinect windows camera. object extracted highlighted either vivid color, or graphic can recognized using feature extraction.

i have used matlab , kinect both feature extraction , 3d co-ordinate extraction before, having problem trying merge techniques together.

a simple way highlight object, , extract feature in 2d image draw 5 circles close each other on object, put view of camera , use centercoords = imfindcircles(image, [15 20]); extract co-ordinates of circles (within radius range) in image. can remove circles in image don't have 5 similar circles in there immediate proximity, , extract co-ordinate of center circle.

but how can extend idea 3d? how can extract 3d co-ordinates of highlighted object using kinect camera?

to use 3-d have use depth values, , maybe combination of color edge filtering techniques well. idea use depth values of object, plus color edges feature selections.

use machine learning algorithm such knn find color edges , possible depth values similar object.

these values come array of pixel , depths.


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