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https://github.com/tobybreckon/opencv-record-windows
a header class file hack to automagically (intercept and) record OpenCV windows to a movie file with minimal code additions
https://github.com/tobybreckon/opencv-record-windows
opencv opencv-library opencv2 opencv3
Last synced: 18 days ago
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a header class file hack to automagically (intercept and) record OpenCV windows to a movie file with minimal code additions
- Host: GitHub
- URL: https://github.com/tobybreckon/opencv-record-windows
- Owner: tobybreckon
- License: lgpl-3.0
- Created: 2017-06-02T20:36:53.000Z (over 7 years ago)
- Default Branch: master
- Last Pushed: 2020-08-18T23:26:30.000Z (about 4 years ago)
- Last Synced: 2024-10-07T22:41:15.339Z (about 1 month ago)
- Topics: opencv, opencv-library, opencv2, opencv3
- Language: C++
- Homepage:
- Size: 18.6 KB
- Stars: 1
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# Record OpenCV Image Windows - Video Capture via HighGUI display windows _hack_
Requires [OpenCV 2.x / 3.x](http://www.opencv.org).
Works with OpenCV C++ or (older) C style interface
---
### Overview:
```
// Record OpenCV Image Display Windows to a Movie File
// a.ka. a Video Capture via HighGUI display windows hack
// automatically records highGUI windows defined with either of:
// namedWindow(), cvNamedWindow() provided all such windows
// are updated in the "main loop" via imshow() or cvShowImage().
// Use: just include this header before all your code **including** the opencv
// header (#include , #include ) etc.
// Windows not to be recorded (or that are not updated) can be black-listed
// via cvNamedWindowBlackList(windowName) (C) or
// via namedWindowBlackList(windowName) (C++). Put these **directly** after
// the corresponding namedWindow() or cvNamedWindow() call
// Copyright (c) 2014 Toby Breckon, [email protected]
// School of Engineering and Computing Sciences, Durham University
// License : LGPL - http://www.gnu.org/licenses/lgpl.html
/* Usage example (see test.cpp, for instance):
< ---- START/TOP OF FILE that includes main() / "main display loop"
#include "opencv_record_output.h"
< ----- your regular code including all other headers
#include ....
.....
.....
namedWindowBlackList("controls"); // a window we don't want / cannot capture
.....
cvNamedWindowBlackList("controls"); // as above but for OpenCV C interface
.....
< ---- END OF FILE "that's it, no other code changes needed.
Defaults: output video is 1280x720 max. - see code below to change
```
---
### Example usage:
```
See test.cpp:
#include "opencv_record_output.h"
#include "bilateral_filter.cpp"
```
which inserts this header before a standard [bilateral filter example](https://github.com/tobybreckon/opencv-record-windows/blob/master/bilateral_filter.cpp) from this repository - [OpenCV C++ examples](https://github.com/tobybreckon/cpp-examples-ipcv).
---
### Background:
Originally developed to generate the video examples for the ebook version of:
[Dictionary of Computer Vision and Image Processing](http://dx.doi.org/10.1002/9781119286462) (R.B. Fisher, T.P. Breckon, K. Dawson-Howe, A. Fitzgibbon, C. Robertson, E. Trucco, C.K.I. Williams), Wiley, 2014.
[[Google Books](http://books.google.co.uk/books?id=TaEQAgAAQBAJ&lpg=PP1&dq=isbn%3A1118706811&pg=PP1v=onepage&q&f=false)] [[doi](http://dx.doi.org/10.1002/9781119286462)]
... based on the example computer vision and image processing code in my other [OpenCV C++ examples](https://github.com/tobybreckon/cpp-examples-ipcv)
and [OpenCV C examples](https://github.com/tobybreckon/c-examples-ipcv) repositories.
---
### Example:
Click for YouTube video example recorded from this example applied to the [bilateral filter example](https://github.com/tobybreckon/opencv-record-windows/blob/master/bilateral_filter.cpp) shown on an old mobile phone video of an evening crossing of Hong Kong harbour [[Fisher / Breckon et al., 2014](http://dx.doi.org/10.1002/9781119286462)].
[](http://www.youtube.com/watch?v=dFWRmQP9Y-A)
---
### Reference:
[Dictionary of Computer Vision and Image Processing](http://dx.doi.org/10.1002/9781119286462) (R.B. Fisher, T.P. Breckon, K. Dawson-Howe, A. Fitzgibbon, C. Robertson, E. Trucco, C.K.I. Williams), Wiley, 2014.
[[Google Books](http://books.google.co.uk/books?id=TaEQAgAAQBAJ&lpg=PP1&dq=isbn%3A1118706811&pg=PP1v=onepage&q&f=false)] [[doi](http://dx.doi.org/10.1002/9781119286462)]
```
@Book{fisher14dictionary,
author = {Fisher, R.B. and Breckon, T.P.
and Dawson-Howe, K. and Fitzgibbon, A.
and Robertson, C. and Trucco, E. and Williams, C.K.I.},
title = {Dictionary of Computer Vision and Image Processing},
publisher = {Wiley},
year = {2014},
edition = {2nd},
isbn = {9781119941866},
doi = {10.1002/9781119286462}
}
```
---
### How to build and run example:
```
git clone https://github.com/tobybreckon/opencv-record-windows.git
cd opencv-record-windows
cmake .
make
./test
```
---
If you find any bugs report them to me (or much better still - submit a pull request, please) - [email protected]
_"may the source be with you"_ - anon.