I share my experience
Archive for November, 2009
Hirai Ken, Pop star
Nov 29th
I like this song because of many reasons. First it is easy to understand. Also it is very moving. I leave the appreciation for you to judge about it. Please share with me your comments.
Tsukuba Mountain Hike
Nov 28th
Today I had a trip to Mountain Tsukuba with TWMC Club.
I did not catch them in the beginning. I reached つつじヶ丘(Tsutsujigaoka) station. I got the rope way. It is really scaring view.
As you may know, Tsukuba mountain has two picks: One pick is associated with a girl. The second is associated with boy. There is a myth that this mountain bring love and bring couple together.
May be it is true. I met my wife there and I am living a romantic love story.
Here are some of my pictures I took there.
Remove items from deque, list or vector in a loop
Nov 28th
Recently I needed to delete items from a sequence like a deque , list or vector from a for loop, I figured out that I have to do something like this:
for(iter = list.begin(); iter != list.end(); ++iter)
{
// your code
iter = list.erase(iter);
--iter;
// your code
}
It looks basic but it took me a while to figure it out so I wanted to share in case somebody need it.
Finally on Google Wave
Nov 26th
I received yesterday an invitation from Google team to join the preview version of their last innovation “Google Wave”. They say: It will re invent the mailing service. Ok, let’s see.
This video shows in a funny way, what is Goole Wave.
Convert Polar image into Cartesian
Nov 26th
This a simple implementation of Polar to Cartesian transformation applied to the image case. It is useful to unroll an omni image to convert it to panoramic image.
imgPol = cvCreateImage(cvSize(2*CV_PI*RadiusMax,RadiusMax-RadiusMin),IPL_DEPTH_8U,1);
cvSet(imgPol,CV_WHITE,NULL);
int x0,y0;
double Radius;
double Angle;
for(int x=1; x < imgPol->width; x++)
{
for(int y=1; y < imgPol->height; y++)
{
Radius = RadiusMin + y;
Angle = 2 * CV_PI * x / imgPol->width;
x0 = cvRound(CenterX + Radius * cos(Angle));
y0 = cvRound(CenterY + Radius * sin(Angle));
cvSet2D(imgPol, y, x, cvGet2D(imgBase,y0,x0));
}
}
cvSaveImage("imgPol.bmp",imgPol);
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