opencv rectangle detection

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OpenCV, about object detection

the //Open operation (expansion corrosion operator) +Mat out; -Mat element = Getstructuringelement (Morph_rect, Size (3,3)); $Erode (Gray_diff, out, Element); $Dilate ( out, out, Element); - - //Find Outlines theMat DST = Mat::zeros ( out. Size (), cv_8uc3); -Vectorcontours;WuyiVectorhierarchy; theFindcontours ( out, contours, hierarchy, Cv_retr_ccomp, cv_chain_approx_simple); - intindex =0, Largestcomp; Wu DoubleMaxarea =0; - for(; index >=0; index = hierarchy[index][0])

Opencv-real-time detection of human eyes on cameras

This article mainly applies the built-in functions cascadeclassifier, load and detecmultiscale of opencv to implement real-time detection of human eyes on the camera! # Include "opencv2/objdetect. HPP "# include" opencv2/highgui. HPP "# include" opencv2/imgproc. HPP "# include The above two files can be found in path: D: \ Program Files \ opencv2.4.3 \ opencv

Opencv--brisk feature detection, matching and object finding

; - }Wuyi } theprintf"min Distance:%f", mindist); - Wu for(inti =0; i ) { - DoubleDist =matches[i].distance; About if(Dist 1.5*mindist,0.02)) { $ Goodmatches.push_back (Matches[i]); - } - } - ADrawmatches (IMG1, Keypoints_obj, Img2, Keypoints_scene, Goodmatches, Akazematchesimg, Scalar::all (-1), +Scalar::all (-1), vectorChar>(), drawmatchesflags::not_draw_single_points); theImshow ("Good match result", akazematchesimg); - $Waitkey (0); the ret

Opencv-Based Skin Detection

Modify the adaptiveskindetector. cpp of opencv and remove the complicated command line parameter input. You only need a Network Camera to run it. In terms of principles, I roughly looked at the usage of the color information in the HSV space. The effect is good, but it seems that the detection effect is poor for white walls, especially milky white walls and wall panels. This is the first small item publishe

Edge Detection Based on OpenCv-Laplacian operator, scharr filter, and laplacianscharr

Edge Detection Based on OpenCv-Laplacian operator, scharr filter, and laplacianscharrLaplacian Operator Edge Detection Original graph Grayscale chart Scharr filter Edge Detection Original graph X direction Y direction Scharr merge chart 1. Introduction to Laplacian Operators Laplacian operator is a second-order d

1, edge detection of OPENCV image

:\\test.jpg"); $iplimage* Img_gray = Cvcreateimage (Cvsize (Img_rgb->width, img_rgb->height),Panax NotoginsengImg_rgb->depth, - 1 the ); + A Cvcvtcolor (Img_rgb, Img_gray, Cv_bgr2gray); the +iplimage* IMG_CNY = Docanny (Img_gray, -, Max,3); - $Cvshowimage ("Example1", Img_gray); $Cvshowimage ("Example2", IMG_CNY); - -Cvwaitkey (0); the -Cvreleaseimage (Img_rgb);WuyiCvreleaseimage (Img_gray); theCvreleaseimage (img_cny); - WuCvdestroywindow ("Example1"); -Cvdestroywindo

OpenCV Skin Detection-HSV separation

); Cvreleaseimage (i); Cvreleaseimage (S); Cvreleaseimage (W); Cvreleaseimage (src_tmp1);}intMainintargcChar*argv[]) { /*iplimage *src = Cvloadimage ("c:\\c_c++ Code\\photo and Video\\text009.jpg", Cv_load_image_color); Cvnamedwindow ("src", cv_window_autosize); Cvshowimage ("src", SRC); Cvnamedwindow ("Flip", cv_window_autosize); Iplimage *DSC = cvcreateimage (cvgetsize (SRC), src->depth, 1); Flip Skindetect with x-axis (SRC, DSC); Cvflip (SRC, DSC, 1); Cvshowimage ("

1.0.x-learning opencv and MFC mixed programming-video motion detection

Source code: http://download.csdn.net/detail/nuptboyzhb/3961668 New Content in version 1.0.x Video motion detection Ø create menu items, learning opencv --> opencvr entry --> video motion detection The menu items are set as follows: Create a Class Wizard ØEdit code Voidccvmfcview: onmytestsport () { // Todo: add your command handler codehere // Alt + F8 sort ou

Learning opencv: A simple human eye detection program

Human Eye Detection involves two steps: 1. Face Detection to obtain the rectangular area of a person's face 2. Human Eye detection in the face rectangle area The following are some source code: # Include "stdafx. H "

OpenCV Tutorials--detection of Planar objects

This tutorial is actually a summary of the previous article, using FEATURES2D and Calib3d modules to discover objects in the scene ~ ~ 1, Create a new console project. Read the input images. Mat img1 = Imread (argv[1], cv_load_image_grayscale); Mat Img2 = Imread (argv[2], cv_load_image_grayscale); 2, Detect keypoints in both images. Detecting Keypointsfastfeaturedetector Detector ();vector 3, Compute descriptors for each of the keypoints.

[Learning opencv Article 2] Canny edge detection

Canny edge detection Iplimage * cvloadimage (const char * filename, int flags = cv_load_image_color ); The first parameter is the file name of the image to be loaded. The second parameter specifies the color and depth of the image to be read,You can convert the input image into a channel (cv_load_image_color), a single channel (cv_load_image_grayscale), or a constant (cv_load_image_anycolor ). Void cvkan (const cvarr * image, cvarr * edges, double t

Opencv corner detection Summary

Question about board point matching? Not considered because R and t have no effect on internal reference calibration. Set the upper left corner to the origin. Note: it does not matter what the target is. The internal parameters obtained in the result are measured in pixels. The unit of T is the same as that of the target. Liu Bo is indeed very powerful. After balancing, clever statistics have achieved the ideal threshold, which is quite robust to light !! Image processing is an art.

[Opencv] 2. Edge Detection

Tags: des style blog color Io OS ar Java >_ 1 # include "opencv2/imgproc. HPP "2 # include" opencv2/highgui. HPP "3 4 # include [Opencv] 2. Edge Detection

OPENCV Glass mirror defect detection, defect information marking and extraction

OPENCV Glass mirror defect detection, defect information marking and extraction Author: scutjy2015@163.com Link: http://blog.csdn.net/scutjy2015/article/details/74011789 Part 1 Partial effect chart Part 2 source program #include Part 3 other experimental pictures

[Learning OpenCV] Image Sobel, Laplacian, canny edge detection

Http://www.cnblogs.com/tiandsp/archive/2013/04/20/3032860.html Three kinds of common edge detection operators. #include "cv.h" #include "highgui.h" using namespace CV; int main (int argc, char* argv[]) { Mat src = imread ("misaka.jpg"); Mat DST; Input image //output image //input Image Color channel number //x direction order number //y Direction order Sobel (Src,dst,src.dept

Detection of moving target by frame difference method of OpenCV

Today's goal is to use OPENCV to achieve the detection of moving objects, here the use of three frame difference method. The code is as follows: #include The figure below is a binary image of the detected moving object and a rectangular frame effect graph superimposed on the actual image.

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