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![#include <stdio.h>
#include <cv.h>
#include <cxcore.h>
#include <highgui.h>
int main(int argc, char **argv)
{
IplImage *sourceImage = cvLoadImage("lena.jpg", CV_LOAD_IMAGE_ANYDEPTH |
CV_LOAD_IMAGE_ANYCOLOR);
IplImage *grayImage = cvCreateImage(cvGetSize(sourceImage), IPL_DEPTH_8U, 1);
cvCvtColor(sourceImage, grayImage, CV_BGR2GRAY);
int param[] = {CV_IMWRITE_JPEG_QUALITY, 95};
cvSaveImage("lena_gray.jpg", grayImage, param);
cvReleaseImage(&sourceImage);
cvReleaseImage(&grayImage);
return 0;
}](https://image.slidesharecdn.com/opencv-110227231118-phpapp01/85/OpenCV-45-320.jpg)
Uploaded by領一 和泉田
OpenCVの基礎
OpenCV is an open source computer vision and machine learning software library. Originally developed by Intel, it is now supported by Willow Garage and has over 2,000 algorithms for computer vision and deep learning. OpenCV is cross-platform and available for Windows, Linux, Android, and Mac. It has C++, Python and Java interfaces and supports machine learning algorithms like SVM and neural networks. OpenCV is used widely in applications like face detection, object recognition, gesture recognition, and more.
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OpenCVの基礎
- 1.
- 2. OpenCV @rizumita
- 3. iOS Twitter: @rizumita : http://tech.caph.jp
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- 7. OpenCV BSD SHIFT SURF
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- 21. - http://kmj.iis.u-tokyo.ac.jp/ HOG
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- 32. SHIFT SIFT,SURF http://www.slideshare.net/lawmn/siftsurf SURF sample: find_obj.cpp FAST sample: http://opencv.jp/opencv2-x-samples/corner_detection
- 33.
- 34. Haar & LBP sample: facedetect.cpp HOG sample: peopledetect.cpp
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- 38. OS Windows Mac iOS Linux Unix &Unix Like OS Android
- 39. Mac MacPorts sudo port installopencv sudo port install opencv+python27+tbb
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- 43. Ubuntu http://sourceforge.net/projects/opencvlibrary/files/opencv-unix/2.2/ sudo apt-get install cmake sudo apt-get install cmake-qt-gui sudo apt-get install libgtk2.0-dev CMake GUI Makefile make && sudo make install
- 44. GCC gcc hoge.c `pkg-config--cflags opencv --libs opencv`
- 45. #include <stdio.h> #include <cv.h> #include<cxcore.h> #include <highgui.h> int main(int argc, char **argv) { IplImage *sourceImage = cvLoadImage("lena.jpg", CV_LOAD_IMAGE_ANYDEPTH | CV_LOAD_IMAGE_ANYCOLOR); IplImage *grayImage = cvCreateImage(cvGetSize(sourceImage), IPL_DEPTH_8U, 1); cvCvtColor(sourceImage, grayImage, CV_BGR2GRAY); int param[] = {CV_IMWRITE_JPEG_QUALITY, 95}; cvSaveImage("lena_gray.jpg", grayImage, param); cvReleaseImage(&sourceImage); cvReleaseImage(&grayImage); return 0; }
- 47. CvCapture *capture =NULL; IplImage *srcImage; int key; if ((capture = cvCreateCameraCapture(0)) == NULL) return -1; // cvNamedWindow("Face Detection", CV_WINDOW_AUTOSIZE); // CvHaarClassifierCascade *cascade = (CvHaarClassifierCascade *)cvLoad("haarcascade_frontalface_alt2.xml", 0, 0, 0); // if (cascade == NULL) return -1; CvMemStorage *storage = cvCreateMemStorage(0); // while(1) { srcImage = cvQueryFrame(capture); // if (srcImage == NULL) continue; IplImage *grayImage = cvCreateImage(cvGetSize(srcImage), IPL_DEPTH_8U, 1); cvCvtColor(srcImage, grayImage, CV_BGR2GRAY); cvEqualizeHist(grayImage, grayImage); // = cvClearMemStorage(storage); // CvSeq *faces = cvHaarDetectObjects(grayImage, cascade, storage, 1.1, 3, CV_HAAR_DO_CANNY_PRUNING, cvSize(0,0), cvSize(0,0)); // int i; for (i = 0; i < (faces ? faces->total : 0); i++) { CvRect *rect = (CvRect *)cvGetSeqElem(faces, i); cvRectangle(srcImage, cvPoint(rect->x, rect->y), cvPoint(rect->x + rect->width, rect->y + rect->height), CV_RGB(255, 0, 0), 3, CV_AA, 0); } cvShowImage("Face Detection", srcImage); key = cvWaitKey(3); if (key == 'q') break; // q } //
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- 50. Web OpenCV.jp http://opencv.jp/ : OpenCV gihyo.jp http://gihyo.jp/dev/feature/01/opencv OpenCV Sourceforge http://sourceforge.net/projects/opencvlibrary/ OpenCV Wiki http://opencv.willowgarage.com/wiki/ Willow Garage Wiki
- 51. OpenCV OpenCV1.1 OpenCV OpenCV Gary Bradski / Adrian Kaehler - David A. Forsyth ( ), Jean Ponce ( ), ( )