learning opencv

, lots of glass in the building", and you can search for the same area in other images. Basically, you are describing features. Similarly, the computer must describe the area around the feature so that it can find the same feature in other images. We refer to this description as a feature description. Once you have a description of the features, you can find the same feature in all the images and you can do whatever you want to do.In this chapter we are going to use the various algorithms in

Summary: Due to the recent AR (augmented reality) concept is very hot, a variety of AR-based applications and games are gradually facing the public, and in the AR is the most important two technology is tracking recognition and enhanced rendering, in which tracking recognition is through OPENCV this open-source computer vision Library to achieve, so I want to study this library, Here is a personal study note, not an authoritative tutorial, if you have

Part IXComputational photography 49 image denoising target ? Learn to remove noise from images using the nonlocal mean denoising algorithm ? Learning functions Cv2.fastnlmeansdenoising (), cv2.fastnlmeansdenoisingcolored (), etc. principle In the previous chapters we have learned a lot about image smoothing techniques , such as Gaussian smoothing, median smoothing, and so on, the effects of these techniques are good when the noise is relativ

[OpenCV] video reading and some simple image processing, opencv reading1. Preface As a computer image processing tool, openCV began to show some irreplaceable advantages due to free disclosure, copyright, and so on (it has been shown for a long time ). Well, I have been working with MATLAB in my graduate school. I always feel like debugging, verification, or MATL

Reprint Please specify source: Danscarlett's Blog ParkOpenCV is the most widely used open source toolkit in the field of computer vision, based on C + +, supports Linux/windows/macos/android/ios, and provides interfaces to languages such as Python,matlab and Java. 2010 OPENCV released the 2.0 version, added a very complete C + + interface, from 2.0 onwards the version of the very user is very large, is still maintained and updated. The 2015

Today's Forum application book "OpenCV Computer Vision programming strategy (China Work Letter publishing house)" arrived, ready to study machine vision.Installed in the evening vc2008 and OpenCV the latest version of 3.0.0, tried a variety of configurations are error prompts "error lnk2019:unresolved external symbol", the final suspicion of the version, downloaded 2.3.1 version tried to run the normal, rea

[Opencv Article 1] install opencv This article mainly introduces how to download the opencv installer and how to install and configure opencv under vs2008. Finally, it introduces a simple example of using opencv. Opencv Getting St

[OpenCV Article 1] install OpenCV This article describes how to download the OpenCV installer and how to install and configure OpenCV under VS2008. At last, it also describes a simple example of using OpenCV. OpenCV Getting Starte

matrix data is continuous// (i.e. when there are no gaps between successive rows).// similar to CV_IS_MAT_CONT(cvmat->type)bool isContinuous() const;Before learning about the functions above, we can find out how to store pixels in OpenCV. The following shows how to store grayscale images (Single Channel) by row and column,The three-channel RGB storage method is as follows. Each column contains three channe

"OpenCV First" installation OpenCVThis article mainly describes how to download the OPENCV installation program, how to install the configuration under VS2008 OpenCV, the article finally introduced a simple sample using OPENCV.the O Pencv Getting Started Guide series article address: http://blog.csdn.net/morewindows/article/category/1291764A Download of OpenCVTo

In the initial C interface, cvGetTickCount () and cvGetTickFrequency () are used. cvGetTickCount () is used twice at the beginning and end of the program segment, and the difference is divided by cvGetTickFrequency () then we can get the running

addition, subtraction, multiplication, equality, inequality, and norm calculation. The scalar _ class is actually derived from VEC It is usually used to transmit pixels. The range class is used to specify consecutive subsequences. For example, a part of the matrix is relatively simple. Let's look at the definition directly: class CV_EXPORTS Range{public: Range(); Range(int _start, int _end); Range(const CvSlice slice); int size() const; bool empty() const; static Range all();

control into the dialog box. Assume that the ID number is IDC_STATIC2, and a button. Assume that the name is button1. // The showimage function is used to display the image void CtestDlg: ShowImage (IplImage * img, UINT id) in the specified ID control) // ID is the ID of the Picture Control. {CDC * pDC = GetDlgItem (ID)-> GetDC (); // obtain the dc hdc hDC = pDC-> GetSafeHdc () of the display control; // obtain the HDC (device handle) for the drawing operation CRect rect; GetDlgItem (ID) -> G

This article mainly introduces how to use Python and OpenCV libraries to convert URLs into OpenCV formats. at the same time, NumPy and urllib are used. For more information, see Today's blog is directly from my own tool library. In the past few months, some PyImageSearch readers emailed me: "How to get the image pointed to by the URL and convert it to OpenCV f

Today finally the QT + OPENCV configuration succeeded, there are some twists in the middle, recorded here.vs2013 + OpenCV's method was previously documented, but this time it's not quite the same, we started with this article configuring proA tutorial on OPENCV development in QT5However, the result is not, the study found that we use MinGW is not vs, this method is suitable vs compiler (for reference: Win7

Recently, opencv is used for image processing. Many people on the internet use Vs and opencv, but they do not like vs very much and want to use QT creator. I searched a lot of materials online and finally spent a day using opencv on QT creator. Required Software: (1) Qt creator. My version is 4.8.5. This version is still installed when

Reproduced, please specify the source: Http://blog.csdn.net/tina_ttlDirectory (?) [+]tags (space delimited): Linux learning OpenCV Install OpenCV under Ubuntu 1404 using the Apt-get method Objective Installation method Where is the OPENCV installed? 1

turn from: http://blog.sciencenet.cn/home.php? Collcc=3456986939collcc=3456885714mod=spaceuid=702148do=blogquickforward=1id= 657754%20%e5%9c%a8mac%e4%b8%8b%e4%bd%bf%e7%94%a8opencv%ef%bc%8c%20%e5%9c%a8xcode%e4%b8%8b%e4%bd%bf%e7%94% A8OPENCVPenis a small Mac white, recently started a MacBook Air, has no time to build a programming environment, the two days finally out of time to start using the Mac system. The current programming tools mainly for Eclipse and Xcode, I first chose to use Xcode, beca

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Today's blog is a direct source of my own personal tool function library. In the past few months, some Pyimagesearch readers emailed me: "How to get a picture that the URL points to and convert it to OPENCV format (without having to write it to disk and then read back)". In this article I will show you how to implement this function. In addition, we will also see how to use Scikit-image to download an image from a URL. Of course the road ahead will al