OpenCV Samples

[1] ASM and more https://github.com/MasteringOpenCV/code

OpenCV Mouse Events

References:
[1] http://opencv-srf.blogspot.com/2011/11/mouse-events.html

Same topics

[1] http://www.sigvc.org/bbs/thread-72-1-1.html

OpenCV Basic Headers

#include "opencv2/core/core.hpp"
#include "opencv2/flann/miniflann.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include "opencv2/photo/photo.hpp"
#include "opencv2/video/video.hpp"
#include "opencv2/features2d/features2d.hpp"
#include "opencv2/objdetect/objdetect.hpp"
#include "opencv2/calib3d/calib3d.hpp"
#include "opencv2/ml/ml.hpp"
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/contrib/contrib.hpp"
#include "opencv2/core/core_c.h"
#include "opencv2/highgui/highgui_c.h"
#include "opencv2/imgproc/imgproc_c.h"

References
[1] http://opencv-srf.blogspot.com/2010/09/opencv-basics.html

Energy Minimization

References:
========

[1] A Comparative Study of Energy Minimization Methods for Markov Random Fields
    paper: http://vision.middlebury.edu/MRF/eccv06/SZSVKATR-ECCV06.pdf
    webpage: http://vision.middlebury.edu/MRF
[2]

Termografia y sus Aplicaciones

Referencias

[1] http://www.nivelatermografia.net/termografia

CentOS 6.5 OpenCV compilation & execution problems

$echo `pkg-config --cflags --libs opencv`               
Package opencv was not found in the pkg-config search path.                    
Perhaps you should add the directory containing `opencv.pc'                    
to the PKG_CONFIG_PATH environment variable                                    
No package 'opencv' found  

$ ls /usr/local/lib/pkgconfig
libnl-1.pc  libnl-3.0.pc  libnl-cli-3.0.pc  libnl-genl-3.0.pc  libnl-nf-3.0.pc  libnl-route-3.0.pc  opencv.pc

$export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig

$ echo `pkg-config --cflags --libs opencv`

-I/usr/local/include/opencv -I/usr/local/include /usr/local/lib/libopencv_calib3d.so /usr/local/lib/libopencv_contrib.so /usr/local/lib/libopencv_core.so /usr/local/lib/libopencv_features2d.so /usr/local/lib/libopencv_flann.so /usr/local/lib/libopencv_gpu.so /usr/local/lib/libopencv_highgui.so /usr/local/lib/libopencv_imgproc.so /usr/local/lib/libopencv_legacy.so /usr/local/lib/libopencv_ml.so /usr/local/lib/libopencv_nonfree.so /usr/local/lib/libopencv_objdetect.so /usr/local/lib/libopencv_ocl.so /usr/local/lib/libopencv_photo.so /usr/local/lib/libopencv_stitching.so /usr/local/lib/libopencv_superres.so /usr/local/lib/libopencv_ts.a /usr/local/lib/libopencv_video.so /usr/local/lib/libopencv_videostab.so -lrt -lpthread -lm -ldl   


$g++ letter_recog.cpp -o letter_recog `pkg-config --cflags --libs opencv`



$./letter_recog                                                                                              
./letter_recog: error while loading shared libraries: libopencv_calib3d.so.2.4: cannot open shared object file: No such file or directory
                                                                                                                 
$export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/usr/local/lib  

Morphological operations using OpenCV

cv::erode(image,eroded,cv::Mat(),cv::Point(-1,-1),3); //3 times

cv::dilate(image,dilated,cv::Mat(),cv::Point(-1,-1),3);  //3 times

References
[1] http://www.packtpub.com/article/opencv-image-processing-morphological-filters
[2] http://qtandopencv.blogspot.com/2013/09/morphological-operations-and-opencv2-00.html

Package opencv was not found (CentOs 6.5)

$g++ `pkg-config --cflags --libs opencv` anycode.cpp -o anycode

Package opencv was not found in the pkg-config search path.                                             
Perhaps you should add the directory containing `opencv.pc'                                              
to the PKG_CONFIG_PATH environment variable                                                              
No package 'opencv' found

Solution
1) find opencv.pc
$ locate opencv.pc

/mnt/vol3/installers/opencv/opencv-2.4.8/build/unix-install/opencv.pc      
...    
/usr/local/lib/pkgconfig/opencv.pc  

2) then add to enviroment variable the path
$ export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig/

OpenCV Centos 6.5 VideoCapture doesn't work with video files

You need recompile

when  you make configure files
#cmake ..
Or

#cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D WITH_TBB=ON -D BUILD_NEW_PYTHON_SUPPORT=ON -D WITH_V4L=ON -D INSTALL_C_EXAMPLES=ON -D INSTALL_PYTHON_EXAMPLES=ON -D BUILD_EXAMPLES=ON -D WITH_QT=ON -D WITH_OPENGL=ON ..

Verify summary

# yum search ffmpeg

ffmpeg-devel.xxxx

gstreamer-ffmpeg.xxxx

# yum search gstreamer
gstreamer-devel.xxxx
gstreamermm.xxxx

install using yum

finally

export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/usr/local/lib


references:
[1] http://prateekvjoshi.com/2013/10/18/package-opencv-not-found-lets-find-it/

Computer Vision References

 Interest Point Detectors & Test Sequences
http://lear.inrialpes.fr/software

OpenCV 2.4 - Visual Studio 10 - Setting

Configuration Properties
C/C++
  +  General settings
     +  Additional include properties (*.h/*.hpp)
VC++ Directory
  + Library Directories (*.lib)
Linker
  + Additional dependencies (namep.lib nameq.lib namer.lib ... )

ASM (Active Shape Model) Resources

ASM src linux and windows

http://www.milbo.users.sonic.net/stasm/

HoG (Histogram of Oriented Gradient) Resources

HoG
http://www.vlfeat.org/overview/hog.html

Object Detection
http://class.inrialpes.fr/tutorials/triggs-icvss1.pdf

Exemplars for Object Detection
http://www.cs.cornell.edu/courses/CS7670/2011fa/lectures/noah_exemplar_svm.pdf

OpenCV ObjectMarker

C++:
[1] http://hvrl.ics.keio.ac.jp/takuya/objectmarker/src.zip
[2] bin-windows http://hvrl.ics.keio.ac.jp/takuya/objectmarker/ObjectMarker.zip

Matlab
http://code.google.com/p/objectmarker/source/browse/trunk/ObjectMarker.m

Distance metrics

References:
[1] http://en.wikipedia.org/wiki/Cosine_similarity
[2] http://www.miislita.com/information-retrieval-tutorial/cosine-similarity-tutorial.html
[3] http://www.cedar.buffalo.edu/~srihari/CSE555/Chap4.Metrics-TangentDistance.pdf
[4] Face verifiation http://www.springerlink.com/content/95143j6058483pnw/fulltext.pdf
[5] Other distance(Weighted Euclidean distance) http://www.econ.upf.edu/~michael/stanford/maeb4.pdf
     http://stats.stackexchange.com/questions/15289/when-to-use-weighted-euclidean-distance-and-how-to-determine-the-weights-to-use
[6] Manhattan http://en.wikipedia.org/wiki/Taxicab_geometry

OpenCV Visual Studio 2010

http://opencv.willowgarage.com/wiki/VisualC++_VS2010_CMake

Resolve problem dll not found at run

For add dll path, if you are not Adminstrator(alternative to use setx)

rundll32 sysdm.cpl,EditEnvironmentVariables

Computer Vision Course

HoG Teach
http://www.youtube.com/watch?v=0Zib1YEE4LU
Adaptive HoG (App)
http://www.youtube.com/watch?v=7u4p3yxp2rw&feature=related

MUBARAK SHAH (Source Code)
http://vision.eecs.ucf.edu/faculty/shah.html

Computer Vision Log(Source Code)
http://www.cvpapers.com/rr-changelog.html

Hog Python
http://scikit-image.org/docs/0.6/auto_examples/plot_hog.html

Read for Hog on OpenCV
http://experienceopencv.blogspot.com.br/2011/02/hog-descriptor.html


Catalog
http://www.ifp.illinois.edu/~cao4/reading/patchbib.htm

Image Descriptors

ASIFT
http://www.ipol.im/pub/demo/my_affine_sift/


Source Code
http://robwhess.github.com/opensift/

Hog (Original)
http://www.openpr.org.cn/index.php/Code-of-Individual-Algorithms/9-Histograms-of-Oriented-Gradients-

HOG-Feature-Extraction/View-details.html
Gallery of Computer Vision
http://blog.sciencenet.cn/blog-722391-569547.html

http://marcosnietoblog.wordpress.com/2012/07/15/source-code-for-sift-orb-fast-and-ffme-for-opencv-c-for-egomotion-estimation/

Face animation

Video realistic animation
http://web.mit.edu/newsoffice/2002/videoai.html
Face cloning and animation
http://usuarios.fceia.unr.edu.ar/~ferradal/