What is better for video compression algorithm, C or Matlab?

[jamesyang1209]

C or Matlab?

Dear Group,
When one develop video compression algorithm, use Matlab or C will be better?

 

[siosavin]

C or Matlab?

You can easily develop video compression algorithm in matlab.
Matlab is fast as c and you can translate your code to c/c++ by matlab-c compiler.

 

[jamesyang1209]

Re: C or Matlab?

Why my professor told us: Use C will be better, since some "memory problem" you will encounter when you use C to program. But Matlab will not.

 

[altivec]

Re: C or Matlab?

i think you should start with matlab especially if you are starting from scratch. then if you have time of computation or memory problems, you could write C code to build a dll inculding the functions of your matlab script that are too computational intesive.

regards.

 

[siosavin]

C or Matlab?

In matlab you also can translate your function to dll.
In this way your speed will increase.

 

[jamesyang1209]

Re: C or Matlab?

Have you ever try to translate matlab code to c/c++?
Is the result good enough?
Should i pay lots of effor to modify the c/c++ result?

 

[siosavin]

C or Matlab?

Yes, I translate some malab functions to c++ & modify & compile them in MVC++6.

 

[prasse]

Re: C or Matlab?

Use MATLAB, verry fast and good solution. No need directly use C++, MATLAB translate to this OK.

 

[jamesyang1209]

Re: C or Matlab?

Is the matlab-c compiler exist in matlab version 5.x?
How to use (brief introduction)?
tks.

 

[Ozonehole2k]

Re: C or Matlab?

Not many programs or person can beat Matlab in prototyping algorithms that involves a lot of calculations. Its library is damn extensive. It is a good starting point anyhow.

However, do allocate more spare time if you intended to use the matlab - c++ compiler. I don't complain about the speed, but, I seriously doubt about its portability. The C++ code generated are largely hooks to the Matlab libs. IIRC, the compiler C++ version is linked to some Matlab dlls. At some stage, you will have to migrate to something like C if the target application is in embeded system. When larger scale deportment is expected, you will have to rewritten quite a few function in C++....

Matlab is too expensive to be used outside research. They won't allow you to use the Matlab run time for free... Although the last time I deal with Matlab/C++ compiler was back in the Matlab 5.0 days, I believe the dependency of installed version of Matlab when running the exported C++ is more like features than bugs to Mathworks. They need to lock the developers down somehow.

 

[siosavin]

C or Matlab?

yes, it exist in matlab 5.x. First install vc++.
Then use "mbuild -setup" command in matlab to configure your matlab.
Finally use "mcc" command to translate matlab code to c++.
For more help on mcc command see help of mcc in matlab. "help mcc".

 

[lamom]

C or Matlab?

i think c is better
matlab is not professional

 

[siosavin]

Re: C or Matlab?

i think c is better
matlab is not professional

I think you dont work with matlab or not familiar with it very much.
you can translate your matlab code to dll or c++ or exe.
Then your program run fast as c.
You also consider GUI copability of matlab.

 

[barret]

Re: C or Matlab?

Matlab allows you to check your ideas faster and convert the result to C/C++ code, on the other hand, if you design takes resources, then you can write it in C, after verification in Matlab, for example

 

[altivec]

Re: C or Matlab?

you can translate your matlab code to dll or c++ or exe.
Then your program run fast as c.

this is true for simple algorithms or simple processing scheme. but with lot of loops, multiple case statements and so on, c/c++ code generation is still not much efficient.

regards

 

[geppoilfolle]

Re: C or Matlab?

Use C or C++, you can easily find a lot of libraries for virtually every problem you'll deal whit

 

[omara007]

Re: C or Matlab?

Use C on Matlab .. this will give u the flexibility to have a stand-alone C code ( regardless of any tool ) .. and the the same time u can run ur C on matlab ..
but if u used matlab language .. and even if it's convertable to C .. it will still not be a mature C as if u wrote C directly from the very begining ..

Ur Prof. is 100% true ..
I guess he may ask u later to port ur code to a DSP or so .. and though matlab does support some DSPs , C suports all DSPs in the world ..

 

[boy]

C or Matlab?

I will test the algorithm in MATLAB and use C/Assembly for real applications and use the MATLAB results to verify C code

 

[siosavin]

Re: C or Matlab?

this is true for simple algorithms or simple processing scheme. but with lot of loops, multiple case statements and so on, c/c++ code generation is still not much efficient.
regards

I dont think as you. When you compile matlab code to c/c++, loops are translated to c/c++ directly. A additional code is not produced for it.

I write a RBF neural network & its trainnig for function approximation in both matlab & c++.
I translate malab code to c++ & compile both c++ file in MSVC++6.
I saw that c++ code from matlab is faster than my c++ code.

 

[altivec]

Re: C or Matlab?

I saw that c++ code from matlab is faster than my c++ code.

well i assume we can't consider this problem with a generic answer. one year ago i tried to translate a filtering bank architecture for a 1MSPS signal from matlab script to high level language and matlab produced me very poor code. the only way was to do code it cleverly and that i don't expect matlab to do it for me.

regards