redirect error on linux

command 2>file1
This command will output all the errors to file1.
 If file1 already existed,  the contents will be overwrite.

command 2>> file2
will append the error messages to file2. 

A nice way to build 3d model from 3d point

http://stackoverflow.com/questions/8292214/using-openni-and-kinect-to-get-cloud-points

Iterative closest point(ICP) algorithm

Iterative closest point algorithm is used to construct 3d model from points .

Famous ICP library including:

MeshLab   GPL license
http://meshlab.sourceforge.net/

CloudCompare GPL License
http://www.danielgm.net/cc/

PCL (Point Cloud Library)   BSD license
http://pointclouds.org

about face image analysis

Dr.  Sami Romdhani did a nice research on create face 3d model from 2d image.
His doctor thesis can be downloaded from the following link. 
http://informatik.unibas.ch/personen/romdhani_sami/

Unfortunately , I did not find the Matlab Morphable Model toolbox created by Dr. Sami...

Facial landmark detection

A facial landmark detection framework can be download from following link.

http://cmp.felk.cvut.cz/~uricamic/flandmark/

Linux LDD & objdump command

ldd command show dependencies of library.

usage:
ldd /lib/file.name

objdump command list the information of library.
This command can be used to check if some method was compiled in this library.

usage :
objdump  -t /lib/file.name | grep method

Jongmoo Choi 研究关于人脸3维成型。

http://www.milbo.users.sonic.net/

中有关于 人脸识别的 Active Shape Model 的程序代码

也有关于 回归的Earth系统的C代码。