opencv programming

How to Use conda to install opencv and conda to install opencvFirst, use Anaconda for convenience (convenient management and inconvenient package installation ). The following is my installation process: first install opencvconda install-c https://conda.binstar.org/menpo opencv using the following command However, it cannot be used after installation, at this time find the following folder Anaconda \ pkgs

Opencv handwritten multiple choice question marking (2) Character Recognition and opencv Character Recognition Opencv handwritten multiple choice question marking (2) Character Recognition Generally, you only need to identify ABCD and empty content for multiple-choice questions. In theory, the recognition rate is high. The recognition code references the online s

The article for Bo Master original, purely personal understanding, if there is a mistake to welcome the point.If you want to reprint, please indicate the source.Introducing JAR PackagesIntroducing a configuration fileTo this environment configuration complete!!!Problems that may occur: 1. An exception occurred because of inconsistent JDK versions.After the build path has been modified, you can.Getting Started Code 01:1 Packagecom.lw.test;2 ImportOrg.opencv.core.Core;3 ImportOrg.opencv.core.CvTy

Raspberry pi +opencv read camera Call the camera on the Raspberry Pi, read each frame in the video stream, and use the canny edge detection to extract the edges in each frame, the final effect is as follows: ReadVideo.cpp #include "opencv2/opencv.hpp" using namespace CV; int main (int, char**) { videocapture cap (0);//Open the default camera if (!cap.isopened ()) //Check if W E succeeded return-1; Mat edges; Namedwindow (

Basically follow the http://www.pyimagesearch.com/2015/06/15/install-opencv-3-0-and-python-2-7-on-osx/installation, in addition to changing some of your own directories.1. Install Xcode2. Install Homebrew-Add OSX to some packages$ cd ~"$ (curl-fssl https://raw.githubusercontent.com/Homebrew/install/master/install) "Update3. Install the Python2. It is recommended to reinstall, not to use the system comes with theInstall pythonOpen ~/. Bash_profile, ad

A mainstream face detection method is like Haar + embedding sting, which is also used in opencv. This method can be applied to the detection of rigid objects, provided that the cascade classifier (for example, the Haar-like feature) is trained. Once the training data is completed, the cascadeclassifier class in opencv is called directly, you can use several simple member functions to complete the detection

that C # is inefficient, using C/C++,OPENCV is written in C and C + +, it should be run in VC + +, image processing is a very large amount of work, C # not. C # operation Efficiency is certainly worse than C + +, but the use of hybrid programming method can be, with C # Framework and operating mechanism, calculation to C is good. EMGUCV many of the processing functions are managed calls with

First, you must understand the kernel structure in opencv: iplconvkernel. How to create Iplconvkernel * cvcreatestructingelementex (INT cols, // line int rows, // column int anchor_x, // coordinate int anchor_y, int shape, // cv_shape_rect of the reference point inside the closed rectangle of the core: the core is a rectangle, cv_shape_cross: Cross, cv_shape_ellipse: elliptical, cv_shape_custom: User-Defined value int * values = NULL ); The release f

I remember getting started with opencv because a two-dimensional dynamic array is needed in an algorithm. At that time, it was easy to look at the core part. With the increase in usage, we became more and more fond of the mat structure, I also thought it was necessary to learn about the new things, so I will take a look at Mat this time. The biggest advantage of mat is similar to that of STL. It manages the memory dynamically without manual memory man

Circulated on the Internet Void showimageauto (iplimage * pimg, cwnd * WND );Void showimage (iplimage * pimg, cwnd * WND, bitmapinfo * BMI );Void fillbitmapinfo (bitmapinfo * BMI, int width, int height, int bpp ); You can use iplimage to draw an image on the MFC interface. However, the function has bugs and does not support single-channel, 8-bit grayscale display.The main reason is that the color palette is used for 8 bitmap. In the bitmapinfo structure of windows, only one rgbquad space is allo

Comparing the two images is similar, this is widely used. At the beginning, I thought this technology was very advanced (of course it was also very advanced) and I had to learn a lot of related knowledge to get started, at least you must have a certain understanding of all aspects before you can do this research. However, opencv provides a set of APIS for this comparison, so that we can easily compare two images. This is the comparison of histograms.

OpenCV image matching algorithm-sift, opencv image sift //utils.h#ifndef _UTILS_H#define _UTILS_H#include //utils.cpp#include "stdafx.h"#include "utils.h"#include // Sift. cpp # include "stdafx. h "# include Use INFO sift_info;sift(path1,path2,sift_info,true);showInfo(sift_info);

Author: gnuhpcSource: http://www.cnblogs.com/gnuhpc/ I called Yu this morning. I didn't know anyone before. I recently read this book and found that I was really uncomfortable reading it. I didn't reply to any errors I submitted on the forum. Mr Yu is very kind. After all, everyone is a young man. He told me that the change will be fixed.I personally think that people who learn opencv through this book should pay attention to the following:1. For fun

Using static initialization method, you can stamp the link below to view the official document introductionhttp://docs.opencv.org/doc/tutorials/introduction/android_binary_package/dev_with_OCV_on_Android.html# Application-development-with-static-initializationIf the project does not contain a JNI part, the simpler approach is:1) write Off Opencvloader.initasync (Opencvloader.opencv_version_2_4_3, this, mloadercallback); Set the top of the statement directly to success.public void Onresume ()

Opencv learning notes 4 and opencv learning notes 4 Generally, more advanced morphological transformations, such as open and closed operations, morphological gradient, "Top Hat", and "Black Hat", can be combined with common corrosion expansion techniques to achieve the desired effect. 1. open operation:First corrosion and then expansion, used to eliminate small objects, separation objects at slender points,

#OpenImg. py From numpy Import * import cv2 win_name = ' mypicture ' #窗口名称 #cv2. Window_normal: The window can be resized manually Cv2.namedwindow (Win_name, Cv2. Window_normal) img = cv2.imread (' mypicture.jpg ', 1) # 0 Black-and-White Picture: 1 Color picture cv2.imshow (Win_name, img) #显示图片 Cv2.waitkey (0) cv2.destroyallwindows () #销毁创建的对象 Above for my Python code to open a picture with OpenCV Error is: Assertion failed There are two rea

[OpenCV] ry distortion correction and local enhancement, opencv ry distortion correction1. Principle During image acquisition, due to the non-linearity of the imaging system and the changes in the attitude of the aircraft, the image after imaging may be out of proportion or even distorted compared with the original image. This type of image degradation is known as geometric distortion (distortion ).This is

C ++ opencv code tutorial for converting a blue background photo into a white background photo, opencv codeC ++ opencv code tutorial for converting a blue background photo into a white background photo. # Include

Original works, reproduced please indicate the source In order to enhance the force lattice, decided to learn OpenCV, think if you can face recognition, fixed-point landing, let the plane fly with their own. It's a little bit exciting to think about it. This is just thinking, can learn not to know yet. Ha.. 1: Download first:http://sourceforge.net/projects/opencvlibrary/ can go down here, I'm under 2.4.10 version, window under. feel that the

Ycrcb Ycrcb is widely used in video compression and digital image processing. It is a color space based on human eyes. In opencv, the formula for converting from RGB space to ycrcb space is as follows: Note that the formula from RGB to ycrcb is not unique. Here, opencv only uses the formula in Intel IPP. The Delta value is as follows: Here we use 8-bit RGB channels as an example, that is, Delta tak