opencv course

path iv.2.1 now need to tell the QT library where the files are installed. Open the. Pro file and add the following path:Includepath + =.Includepath + =/usr/local/includeIncludepath + =/usr/local/include/opencvIncludepath + =/usr/local/include/opencv2Includepath + =/usr/local/include/opencv2/coreIncludepath + =/usr/local/include/opencv2/highguiIncludepath + =/usr/local/include/opencv2/imgprocIncludepath + =/usr/local/include/opencv2/flannIncludepath + =/usr/local/include/opencv2/photoIncludepat

Adjust the object recognition parameters of the AdaBoost Cascade classifier based on the Haar feature 1. Object recognition problem of AdaBoost Cascade classifier based on Haar featurePaul A. Viola and Michael J. Jones published in 2001 the article "Fast object detection using simple features to improve cascade detectors." At the same time, many bloggers in csdn from 07 to 13 have made a lot of work on the principle of this method, library function content, the training of XML file and the reali

[OpenCV function] contour extraction; contour drawing; contour area; External rectangle and opencv rectangleFindContours Search for a contour in a binary imageIntCvFindContours(CvArr * image, CvMemStorage * storage, CvSeq ** first_contour,Int header_size = sizeof (CvContour), int mode = CV_RETR_LIST,Int method = CV_CHAIN_APPROX_SIMPLE, CvPoint offset = cvPoint (0, 0 )); Image Input 8-bit, single-channel

(Conversion) OpenCV extracts each frame of the video and then combines consecutive images into a video. opencv extracts Reference blog: http://blog.sina.com.cn/s/blog_60b330b801018s0u.html Running Environment: Win7 OpenCV1.0 VC6.0. The following video generation Code uses the XVID encoder. If no download is required on the computer, otherwise the size of the generated video file is 0. Or you can set cvCreat

Image Fuzzy Judgment code based on opencv and opencv fuzzy judgment code # Include "cv. h "# include" highgui. h "# include

Python-opencv extracts the contour of an image when there is noise, and python-opencv outlines For general image contour extraction, this blog introduces a good method, but for noisy images, the target object cannot be captured well. For example, for my mouse, the extracted contour is not good because of the noise: So this article adds the noise removal part. First load the original image and display the i

1. Random Color The method of taking the random number from the OPENCV, using the steps: 0xFFFFFFFF= rng.uniform (lower limit, upper limit); 2. Display text voidPuttext (mat img,Const string text, point org,intFontface,DoubleFontscale, Scalar color,intthickness=1,intLinetype=8,BOOLbottomleftorigin=false) Img–image.text–textstringTo be drawn.org–bottom-left corner of the textstring inchThe image.font–cvfont structure initiali

Using the Iplimage pointer data type in the old version requires manual allocation and release, which is more cumbersome.This shortcoming is avoided by using the mat data structure directly in the new version.No technical content, no more nonsense, just look at the comments in the code.#include "OpenCv" OpenCv a simple comparison between the original version and the new version (2.4.10)

In order to verify the algorithm in the previous blog, you can make a slight modification by using the image structure in opencv. For simplicity, using mat. at In the algorithm, manually select the threshold value for binarization of the image, which has a great impact on the effect of the watershed algorithm. We have also used cvadaptivethreshold in opencv to automatically select and seek, but the effect

Speed comparison of opencv image traversal methods and comparison of opencv Images Condition: for a single line, the main frequency is 3.4ghz. the image image.jpg is 768x576. // ReadImage. cpp: defines the entry point of the console application. // # Include "stdafx. h "# include We can see that for image traversal of this size, the pointer method is 30 times faster than the method using the iter

Opencv matrix operations (3), opencv matrix operationsIntroduction This article undertakes the previous article and continues to use matrix computing functions under opencv.Specific Code for Matrix Replication printf("mat1:\n"); showMatdate(mat1); mat3 = Mat(3, 3, CV_64FC1); src3 = mat3; cvRepeat(src1, src3); printf("cvRepeat(mat1):\n"); showMatdate(mat3);Result Display Code for ad

Opencv achieves character segmentation for License Plate Recognition, opencv license plateIntroduction In the previous article, we have located the license plate number in the image, copied the license plate number into a new image, and displayed it, this chapter continues to process the captured images. The new screenshot is as follows: Gray-scale image

Opencv solves AX = 0, opencv solves ax When Ax = 0, cvsolve cannot be used to pick up functions. However, you can use the following functions to solve the problem. # Include Cvsolve is used when solving Ax = B and B is not zero vector

enter the full path, including the extension name)voidCimageprodlg::onsaveas () {//TODO: Add Command handler code here if(m_capacity) {CFileDialog dlg (FALSE, NULL, NULL, Ofn_filemustexist| Ofn_pathmustexist |ofn_readonly, TEXT ("supported Types (*.jpg;*.png;*.gif;*.bmp; ...) | *.jpg;*.png;*.gif;*.bmp| Tiff (*.tiff;*.tif) |*.tiff;*.tif| All Files (*. *) |*.*| |"), NULL); Dlg.m_ofn.nFilterIndex=1; Dlg.m_ofn.hwndOwner=m_hwnd; Dlg.m_ofn.lStructSize=sizeof(OPENFILENAME); Dlg.m_ofn.lpstrTitle= TE

Seed-dim3517 QT opencv cross-compiling embedded Opencv transplantation Method: http://blog.csdn.net/b5w2p0/article/details/8976665 I used cmake and eventually succeeded. I copied the so file generated in the path to the/lib file of the Development Board. Before that, you may also need to port ffmpge: http://blog.csdn.net/b5w2p0/article/details/38455071 When you encounter problems, read more articles and try

-version.cmakeTwo files, then CMake will follow it to determine the correct build platform and mode, so that vs can be like GCC and so can be used to build CMake project files!* Do not add cmake_prefix_path variable sometimes can also work, just sometimes can not, specifically unclear why* Of course, you will have to include the CMake Bin directory in path so you can use the CMake command directlyThe OpenCV