本来想用beam splitter来做image warping的，而且beamsplitter也很便宜，才100$左右。但是后来发现，放beamsplitter的铁架子要10,000$左右，就只能放弃了。

看了两个还可以的tutorial,
http://www.beej.us/guide/bgnet/output/html/singlepage/bgnet.html
http://www.cs.rpi.edu/courses/sysprog/sockets/sock.html

最近做image warping，把image从一个camera warp到另外一个camera。最开始用了homography的方法，不好用；又试了一下使用depth map和camera calibration，但是因为depth map不精确，加上estimated的focal length也不精确，所以这种方法也不行；也试了使用函数warping的方法，使用1, x, x^2, x^3, …函数基，也不行。现在准备试一试正交的函数基。

http://en.wikipedia.org/wiki/Basis_function

Polynomial bases

The collection of quadratic polynomials with real coefficients has {1, t, t²} as a basis. Every quadratic can be written as a1+bt+ct², that is, as a linear combination of the basis functions 1, t, and t². The set {(1/2)(t-1)(t-2), –t(t-2), (1/2)t(t-1)} is another basis for quadratic polynomials, called the Lagrange basis.

http://en.wikipedia.org/wiki/Lagrange_polynomial

Orthogonal polynomials

http://en.wikipedia.org/wiki/Orthogonal_polynomials

Legendre polynomials

http://en.wikipedia.org/wiki/Legendre_polynomials

对MS的应用程序来说，先安装MS Publisher Imagesetter virtual printer。
To install the MS Publisher Imagesetter virtual printer, open the `Printers` settings folder, and click `Add Printer`. Select a local printer; since it is virtual, select the FILE: port. Specify `Generic` as manufacturer, and then you can choose the MS Publisher Imagesetter.
Then change the file extension to *.ps

如果想将pdf转成ps格式，下载postscript printer。
PostScript printer drivers for Windows
http://www.adobe.com/support/downloads/product.jsp?product=44&platform=Windows
如果是adobe acrobat professional的话，可以直接save as成ps格式。

在smith hall打印的命令为
qpr -q smips *.ps

Given a disparity map and a color image, want to view the 3D scene created by these 2 images:

clear;
% load images
Index=imread(‘disparity.bmp’);
C=double(imread(‘fly_1.jpg’))/255;

s = size(C);
m = s(1,1); % row
n = s(1,2); % columm

figure;
for x=1:1:m
for y=1:1:n
plot3(x, y, Index(x,y,1), ‘color’, [C(x,y,1), C(x,y,2), C(x,y,3)]), hold on;
end
end

执行的时候效率非常低，当还有1G free memory的时候就抱错说out of memory，估计是这种做法让Matlab觉得太恶心了。使用figure的3d旋转按钮多按了几次，结果连Matlab就直接退出了。
（用plot来画大量的点的时候效率就低，加上每个点都指定不同的color，估计就更不行了。）

The Translation Process
http://www.cse.ohio-state.edu/~gurari/TeX4ht/mn37.html

The system can be activated with a sequence of commands of the following form, typically embedded within a script.
latex x (or ‘tex x’)
latex x
latex x
tex4ht x
t4ht x
The three compilations with La(TeX) are needed to ensure proper links.

在使用tex4ht的时候，要导入tex4ht.sty and *.4ht style files。如果要显示数学公式，还要安装imagemagick供t4ht使用。产生页面效果很好。

觉得跟老板要多交流，但有时候又不方面坐到一起来讨论问题，或者update最近做的工作，所以觉得写个网页然后给老板发个link比较合适。这也是为什么转这篇文章的原因:

http://www.fauskes.net/nb/htmleqI/
http://www.fauskes.net/nb/htmleqII