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I have a simulation in C++ which generates huge amount of data. Right now I am using MATLAB libraries to save the results as a .mat file, but eventually I will be needing an open source binary format. I don't want to implement my own binary format and ASCII is not an option. I heard that VTK provides .vtk binary file format for saving 3d data structures, which is exactly what I need. Is there a good C/C++ library for reading/writing VTK files?
Yes, there is a good library providing .vtk files I/O, and it is called... wait for it... VTK! :)
http://www.vtk.org/doc/release/4.2/html/classvtkUnstructuredGridWriter.html
http://www.vtk.org/doc/release/4.2/html/classvtkUnstructuredGridReader.html
(There are many other readers/writers to suit your data type).
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I have to work on a small project. I am just preparing for it. It has to do with audio signals. I have heard that openAL a c++ library, focuses only on audio stuff. Can this library perform cross-correlation, fft etc to find if the two audio files are identical? If so, then please post any link to tutorials or any other helpful materials on openAL. And if not, then suggest me any other library that can perform these operations.
The idea is that I want an audio input, compare that input with other audio files, and want to get the best match, then print the corresponding word . Some thing like voice recognition, not the pure voice recognition but something similar.
Thanks!!!
You dont need OpenAL for comparing files if they are exactly the same.
For a file comparison, look for the <fstream> header.
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For a more complex project, I need to compute the approximate, relative distances of objects from two images (from stereo-cameras). Practically what this neat tutorial explains: https://chrisjmccormick.wordpress.com/2014/01/10/stereo-vision-tutorial-part-i/ and with a result like that
Think I shouldn't be reinventing the wheel for this project and since speed is very important (realtime from two videostreams) I'm looking for a native library (preferably in C++ where the whole project is written in) for this task.
Does anyone have a suggestion?
Open source would be greatest but not mandatory.
Huge thanks in advance!
try with LIBELAS library (Library for Efficient Large-scale Stereo Matching).
Best!
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I need to develop a video generator that takes in a set of images, music files and outputs mp4 videos. The platform is linux. Was wondering if there are any existing libraries that can do this job ?
Thanks
I believe Processing can do what you want.
you can use ImageMagick for video part. It has both good graphics/video library and corresponding console application. For sound embedding use gstreamer.
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I would like to mix several sound (wave) streams into one.
Each stream might have a different format (bits/sample, channel count, etc.), so conversion is needed also.
I am looking for a library to do this, which I can link into my VS C++ project, before jumping in and implementing my own.
If you just want a library you can use the SOX library. It is pretty good and easy to use.
If you want more control over how the mixing is done, and maybe have more than 2 files to mix, you should take a look at the STK library
It is very simple yet quite powerful. The following is an example of how you can use a single line of code to mix two waves (simple superpositioning of the signals)
output.tick( input1.tick()*0.5+ input2.tick()*0.5 );
Hope this helps.
FMOD is quite good.
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I am looking for an open source C/C++ image/video thumbnail generation libraries.
(other than ffmpeg or DevIL)
Will Image Magick work? It is quite a capable library with C++ (and C) bindings. It does support grabbing still frames from some video formats, see here. It's a command-line example, but should work from the API as well.
Try ffmpegthumbnailer:
This thumbnailer was designed to be as fast and lightweight as possible. The only dependencies are ffmpeg, libpng and libjpeg.