<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[android_lee的专栏]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/android_lee</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; android_lee]]></copyright><item><title><![CDATA[u－boot 移植步骤详解]]></title><link>https://blog.youkuaiyun.com/android_lee/article/details/19811967</link><guid>https://blog.youkuaiyun.com/android_lee/article/details/19811967</guid><author>android_lee</author><pubDate>Mon, 24 Feb 2014 10:48:12 +0800</pubDate><description><![CDATA[1 U-Boot简介
U-Boot，全称Universal Boot Loader，是遵循GPL条款的开放源码项目。从FADSROM、8xxROM、PPCBOOT逐步发展演化而来。其源码目录、编译形式与Linux内核很相似，事实上，不少U-Boot源码就是相应的Linux内核源程序的简化，尤其是一些设备的驱动程序，这从U-Boot源码的注释中能体现这一点。但是U-Boot不仅仅支持嵌入式Linu]]></description><category></category></item><item><title><![CDATA[lib1funcs.asm undefined reference to raise']]></title><link>https://blog.youkuaiyun.com/android_lee/article/details/19198953</link><guid>https://blog.youkuaiyun.com/android_lee/article/details/19198953</guid><author>android_lee</author><pubDate>Fri, 14 Feb 2014 14:17:05 +0800</pubDate><description><![CDATA[在board/目录/platform.S （老版本uboot）中最后，加入：
或board/目录/lowlevel_init.S(新版本）中最后，加入：
.globl raise
raise:
   nop
   mov pc, lr]]></description><category></category></item><item><title><![CDATA[davnici dm6446中flash程序固化]]></title><link>https://blog.youkuaiyun.com/android_lee/article/details/19198251</link><guid>https://blog.youkuaiyun.com/android_lee/article/details/19198251</guid><author>android_lee</author><pubDate>Fri, 14 Feb 2014 13:56:49 +0800</pubDate><description><![CDATA[http://ansondeng.blog.163.com/blog/static/182682482201212092338857/

1.     配置编译一个符合要求的内核
 
首先，IDE驱动和flash驱动有冲突必须disable，路径为：
        Device drivers --> ATA/ATAPI/MFM/RLL support à ATA/ATAPI/MFM/]]></description><category></category></item><item><title><![CDATA[uboot bootcmd 和bootargs参数详解]]></title><link>https://blog.youkuaiyun.com/android_lee/article/details/19032957</link><guid>https://blog.youkuaiyun.com/android_lee/article/details/19032957</guid><author>android_lee</author><pubDate>Mon, 10 Feb 2014 11:26:06 +0800</pubDate><description><![CDATA[U-boot的环境变量值得注意的有两个： bootcmd 和bootargs。(http://www.cnblogs.com/cornflower/archive/2010/03/27/1698279.html)
u-bootcmd
    前面有说过bootcmd是自动启动时默认执行的一些命令，因此你可以在当前环境中定义各种不同配置，不同环境的参数设置，然后设置bootcmd为你经常使用的那]]></description><category></category></item><item><title><![CDATA[Cannot open keyboard？]]></title><link>https://blog.youkuaiyun.com/android_lee/article/details/19006321</link><guid>https://blog.youkuaiyun.com/android_lee/article/details/19006321</guid><author>android_lee</author><pubDate>Sun, 09 Feb 2014 11:49:29 +0800</pubDate><description><![CDATA[export set QWS_KEYBOARD="USB:/dev/input/event1"环境变量是这样设置的！]]></description><category></category></item><item><title><![CDATA[QTCreator + QTEmbedded 在Ubuntu上创建嵌入式ARM开发环境]]></title><link>https://blog.youkuaiyun.com/android_lee/article/details/19006073</link><guid>https://blog.youkuaiyun.com/android_lee/article/details/19006073</guid><author>android_lee</author><pubDate>Sun, 09 Feb 2014 11:34:51 +0800</pubDate><description><![CDATA[环境：

Ubuntu10.04

arm linux OS: 3.0.1

arm上 qt-4.7.1

g++ / gcc 4.4.3

arm-linux-g++ / arm-linux-gcc 4.3.2





特别标注：

有些网站转载我的文章不标明出处，并且转载不到位，没有把相应的链接一块转过去，比如说下载链接或相关文献的链接等，导致一些网友阅读]]></description><category></category></item><item><title><![CDATA[QScreenLinuxFb::connect: No such file or directory]]></title><link>https://blog.youkuaiyun.com/android_lee/article/details/19004783</link><guid>https://blog.youkuaiyun.com/android_lee/article/details/19004783</guid><author>android_lee</author><pubDate>Sun, 09 Feb 2014 10:20:26 +0800</pubDate><description><![CDATA[参看之前的文字，进行pc机上的编译。移植必要的lib到已有的文件系统中。
写一个测试程序，运行时，提示什么没有，拷贝就可以了。
我需要的文件：
fonts 需要拷贝到编译时的目录 /usr/local/Trolltech/qte-arm/lib/下
以及 libQtGui libstdc++.so.6 libQtNetwork.so.4 libQtCore.so.4 librt.so.1]]></description><category></category></item><item><title><![CDATA[QWSSocket::connectToLocalFile could not connect:: Connection refused]]></title><link>https://blog.youkuaiyun.com/android_lee/article/details/18994603</link><guid>https://blog.youkuaiyun.com/android_lee/article/details/18994603</guid><author>android_lee</author><pubDate>Sat, 08 Feb 2014 21:19:53 +0800</pubDate><description><![CDATA[Qt经典出错信息之QFontDatabase: Cannot find font directory

原文:http://www.cuteqt.com/blog/?p=86
出错信息类似这样：
QFontDatabase: Cannot find font directory /usr/local/Trolltech/QtEmbedded-4.5.1/lib/fonts - is Qt ]]></description><category></category></item><item><title><![CDATA[Ubuntu10.10下QTEmbedded-4.5.2在DM6446环境下的搭建]]></title><link>https://blog.youkuaiyun.com/android_lee/article/details/18698523</link><guid>https://blog.youkuaiyun.com/android_lee/article/details/18698523</guid><author>android_lee</author><pubDate>Thu, 23 Jan 2014 09:44:07 +0800</pubDate><description><![CDATA[开发环境:

    
主机操作系统:Ubuntu 10.10

目标板Davinci DM6446

交叉编译器：arm_v5t_le-gcc(有Montavista 4.0提供)

1.   下载源码包：

   

  a.   Qt 4.5.2 for Open Source C development on Linux/X11 [120Mb]
        ]]></description><category></category></item><item><title><![CDATA[双目测距二]]></title><link>https://blog.youkuaiyun.com/android_lee/article/details/18617229</link><guid>https://blog.youkuaiyun.com/android_lee/article/details/18617229</guid><author>android_lee</author><pubDate>Tue, 21 Jan 2014 17:26:01 +0800</pubDate><description><![CDATA[三、双目定标和双目校正

双目摄像头定标不仅要得出每个摄像头的内部参数，还需要通过标定来测量两个摄像头之间的相对位置（即右摄像头相对于左摄像头的三维平移 t 和旋转 R 参数）。



图6

要计算目标点在左右两个视图上形成的视差，首先要把该点在左右视图上两个对应的像点匹配起来。然而，在二维空间上匹配对应点是非常耗时的，为了减少匹配搜索范围，我们可以利用极线约束使得对应点的匹配由]]></description><category></category></item><item><title><![CDATA[双目测距一]]></title><link>https://blog.youkuaiyun.com/android_lee/article/details/18617177</link><guid>https://blog.youkuaiyun.com/android_lee/article/details/18617177</guid><author>android_lee</author><pubDate>Tue, 21 Jan 2014 17:24:50 +0800</pubDate><description><![CDATA[http://blog.youkuaiyun.com/chenyusiyuan/article/details/5961769




双目测距的基本原理



如上图所示，双目测距主要是利用了目标点在左右两幅视图上成像的横向坐标直接存在的差异（即视差 ）与目标点到成像平面的距离Z存在着反比例的关系：Z=fT/d。“@scyscyao ：在OpenCV中，f的量纲是像素点，T的量纲由定标板棋]]></description><category></category></item><item><title><![CDATA[svm资源]]></title><link>https://blog.youkuaiyun.com/android_lee/article/details/8225690</link><guid>https://blog.youkuaiyun.com/android_lee/article/details/8225690</guid><author>android_lee</author><pubDate>Mon, 26 Nov 2012 14:24:24 +0800</pubDate><description><![CDATA[一切都是关于 SVM !

SVM原理 入门(1-10):
（1-3）简介+线性分类器     http://www.blogjava.net/zhenandaci/archive/2009/02/13/254519.html
  (4) 线性分类器的求解        http://www.blogjava.net/zhenandaci/archive/2009/02/13/254578]]></description><category></category></item><item><title><![CDATA[ubuntu 11.04 中安装 opencv 2.3]]></title><link>https://blog.youkuaiyun.com/android_lee/article/details/8080053</link><guid>https://blog.youkuaiyun.com/android_lee/article/details/8080053</guid><author>android_lee</author><pubDate>Wed, 17 Oct 2012 10:08:23 +0800</pubDate><description><![CDATA[OpenCV官网的安装教程好像写的很全面，window，linux，macOS各种环境的都写了，VS2010，Eclipse，Codeblocks各种IDE的也都写了，但是好像每个都没写明白，所以在这里写一个简明的教程，环境是ubuntu11.04，openCV 2.3，编译器G++，编辑器vim。

1. 安装openCV2.3的依赖包，如果只用其基本功能用：


  sudo apt]]></description><category></category></item><item><title><![CDATA[人脸识别网上资源列表(装载)]]></title><link>https://blog.youkuaiyun.com/android_lee/article/details/8078108</link><guid>https://blog.youkuaiyun.com/android_lee/article/details/8078108</guid><author>android_lee</author><pubDate>Tue, 16 Oct 2012 17:19:51 +0800</pubDate><description><![CDATA[http://sourceforge.net/apps/mediawiki/pyvision/index.php?title=FaceL:_Facile_Face_Labeling
 

原文地址：
Related Open Source and Demo Software
This is a short list of free or cheap webcam face recogni]]></description><category></category></item><item><title><![CDATA[gstreamer + android]]></title><link>https://blog.youkuaiyun.com/android_lee/article/details/7071989</link><guid>https://blog.youkuaiyun.com/android_lee/article/details/7071989</guid><author>android_lee</author><pubDate>Wed, 14 Dec 2011 21:47:24 +0800</pubDate><description><![CDATA[2010-4-7
http://wiki.huihoo.com/index.php?title=GStreamer
http://www.cnblogs.com/phinecos/archive/2009/06/07/1498166.html
 
 
http://groups.google.com/group/prajnashi/web/git-repositories
 
pra]]></description><category></category></item><item><title><![CDATA[ubuntu 11.10（32位系统）下编译android源码]]></title><link>https://blog.youkuaiyun.com/android_lee/article/details/6998256</link><guid>https://blog.youkuaiyun.com/android_lee/article/details/6998256</guid><author>android_lee</author><pubDate>Mon, 21 Nov 2011 21:53:40 +0800</pubDate><description><![CDATA[本文介绍在ubuntu 11.10系统下编译android 2.3.3源码，编译之前请确定上两篇文章（http://www.cnblogs.com/dwayne/archive/2011/11/16/2250732.html和http://www.cnblogs.com/dwayne/archive/2011/11/11/2245383.html）中所需的准备工作已经成功完成。编译完成生成系统镜像]]></description><category></category></item><item><title><![CDATA[apt-get -f install 修复失败！]]></title><link>https://blog.youkuaiyun.com/android_lee/article/details/6994243</link><guid>https://blog.youkuaiyun.com/android_lee/article/details/6994243</guid><author>android_lee</author><pubDate>Sun, 20 Nov 2011 21:29:20 +0800</pubDate><description><![CDATA[Android的x86开发环境编译的时候需要下载Java开发环境，在Ubuntu9.10的系统上安装apt-get install sun-java6-jdk
 
我的Ubuntu9.10的系统中提示没有sun-java6-jdk这个源，所以我通过加了一个deb包来实现
add-apt-repository "deb http://archive.canonical.com/ lucid p]]></description><category></category></item><item><title><![CDATA[ubuntu10.4安装交叉编译器arm-none-linux-gnueabi-gcc]]></title><link>https://blog.youkuaiyun.com/android_lee/article/details/6987966</link><guid>https://blog.youkuaiyun.com/android_lee/article/details/6987966</guid><author>android_lee</author><pubDate>Fri, 18 Nov 2011 12:38:35 +0800</pubDate><description><![CDATA[解压缩交叉编译工具链：
1.  cd /usr/local/
2.  cp arm-2009q3-67-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2 /usr/local/
3.  tar -jxvf arm-2009q3-67-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2
设置一下环境]]></description><category></category></item><item><title><![CDATA[Ubuntu下安装交叉编译环境]]></title><link>https://blog.youkuaiyun.com/android_lee/article/details/6987964</link><guid>https://blog.youkuaiyun.com/android_lee/article/details/6987964</guid><author>android_lee</author><pubDate>Fri, 18 Nov 2011 12:37:53 +0800</pubDate><description><![CDATA[最近一直在弄linux系统，由于需要进行嵌入式操作，所以必须要安装交叉编译环境。下面是我安装交叉编译环境的过程，系统用的是UBUNTU，目标板用的是AT91RM9200.虽然简单，但对初学者应该有些帮助
安装交叉编译环境
1. 安装标准的C开发环境，由于Ubuntu安装默认是不安装的，所以需要先安装一下：
sudo apt-get install gcc g++ libgcc1 libg++]]></description><category></category></item><item><title><![CDATA[linux下JDK的安装]]></title><link>https://blog.youkuaiyun.com/android_lee/article/details/6987619</link><guid>https://blog.youkuaiyun.com/android_lee/article/details/6987619</guid><author>android_lee</author><pubDate>Fri, 18 Nov 2011 11:00:23 +0800</pubDate><description><![CDATA[一、jdk-1_5_0_17-linux-i586.bin的安装
1.修改文件权限:# chmod u+x ./jdk-1_5_0_17-linux-i586.bin
2.通过./jdk-1_5_0_17-linux-i586.bin进行安装。(more查看文件常用命令:Enter向下n行，需要定义，默认为1行)
3.配置环境变量
若是以root身份登陆，只需在/etc/profile添加]]></description><category></category></item></channel></rss>