看来有必要继续搞opencv了

越来越发现opencv的强大，和matlab类似，却比matlab快n倍，对intel处理器的优化，让我更坚定了搞定它的信心。发现中国搞这个的不太多，不知道为什么。

而且，后来发现：

OpenCV 对非商业用途和商业用途都是免费（FREE）的。

license:

IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING. 

By downloading, copying, installing or using the software you agree to this license.
If you do not agree to this license, do not download, install,
copy or use the software.


                       Intel License Agreement 
               For Open Source Computer Vision Library 

Copyright (C) 2000, 2001, Intel Corporation, all rights reserved.
Third party copyrights are property of their respective owners. 

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

  * Redistribution's of source code must retain the above copyright notice,
    this list of conditions and the following disclaimer.

  * Redistribution's in binary form must reproduce the above copyright notice,
    this list of conditions and the following disclaimer in the documentation
    and/or other materials provided with the distribution.

  * The name of Intel Corporation may not be used to endorse or promote products
    derived from this software without specific prior written permission.

This software is provided by the copyright holders and contributors "as is" and
any express or implied warranties, including, but not limited to, the implied
warranties of merchantability and fitness for a particular purpose are disclaimed.
In no event shall the Intel Corporation or contributors be liable for any direct,
indirect, incidental, special, exemplary, or consequential damages
(including, but not limited to, procurement of substitute goods or services;
loss of use, data, or profits; or business interruption) however caused
and on any theory of liability, whether in contract, strict liability,
or tort (including negligence or otherwise) arising in any way out of
the use of this software, even if advised of the possibility of such damage.