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//output a compile time constant
template<size_t size>
struct overflow{ operator char() { return size + 999999; } }; //always overflow
template<int VALUE>
void echoCompileTimeConstant()
{
    char(overflow<VALUE>());
}

Usage:

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cv::Mat image;
        image.create(image_height, image_width, CV_16UC1);


        cv::Mat image_8bit;
        image_8bit.create(image_height, image_width, CV_8UC1);

 memcpy(image.data,frame_ptr->getImageRawPtr(),(image_width)*image_height*2);

        uint16_t max=0;

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for file in *.bag; do echo "$file" && rosbag info "$file" -y; done

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#!/usr/bin/env sh

# It's a reference about what to do after freshly installing Ubuntu 12.04 desktop amd64.
# It's MY note and it suit me.
# Though I note the process down here as a ".sh" file,
# you SHOULD check it first or copy-and-paste the useful sections into your terminal
# to ensure the availability.
# I am NOT GUARANTEE the availability of this file (note)
# or I am not responsible for your lost if you follow this note.
# It's for amd64 only, not i386, though most of the codes should meet no problems in i386.

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for file in *.bag; do echo "$file" && rosrun irdetect_16_8 bag_to_image "$file" /cam2/image_raw ~/Desktop/$file 16 1 1; done

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function [ q3 ] = slerp( q1, q2, t )
%SLERP quaternion slerp
%   computes the slerp of value t between quaternions q1 and q2

q1 = q1 ./ norm(q1);
q2 = q2 ./ norm(q2);

one = 1.0 - eps;
d = q1'*q2;
absD = abs(d);

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function [ averagequat ] = average_quats( diffquats )
%AVERAGE_QUATS Average a series of quats, needs to be a two power length
%vector
%   using slrp

range = size(diffquats);
if(range(1) ~= 4)
error 'quaternions must be 4 row vectors'    
end

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#use some preinstalled ubuntu and activate swap:
http://wiki.ubuntuusers.de/Swap#Swap-als-Datei


#install some packages:
sudo apt-get update
sudo apt-get build-dep libcppunit-dev autoconf automake autotools-dev dh-autoreconf doxygen libtool m4 -y
sudo apt-get install python-nose python-empy python-sip-dev python-sip -y
sudo apt-get install cmake libblkid-dev e2fslibs-dev libboost-all-dev libaudit-dev liblog4cxx10-dev liblog4cxx10 libbz2-* wx-common libwxgtk2.8-dev libgtest* swig -y

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sudo dd ... &

ps auxww |grep " dd " |grep -v grep |awk '{print $2}' |while read pid; do sudo kill -USR1 $pid; done

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git config --global color.ui "auto"

__git_ps1 () 
{ 
    local b="$(git symbolic-ref HEAD 2>/dev/null)";
    if [ -n "$b" ]; then
        printf " (%s)" "${b##refs/heads/}";
    fi
}