opencv roi

This article describes how to install Python and OpenCV on Raspberry Pi 2 or Raspberry Pi B +. it is based on the GTK library and uses Python2.7 and OpenCV2.4.X as an example, if you need a friend, refer to my Raspberry Pi 2 which was just delivered yesterday. this guy looks very cute. This guy has a 4-core MHz processor and 1 GB memory. You know, Raspberry Pi 2 is much faster than most computers in my middle school computer lab. Since the release of

I have been studying centos for a long time and have never been able to write about it. Today, when I saw an article by a netizen, I will share with you some of the steps for installing opencv below. Centos opencv has been widely used but is constantly updated. Here we will introduce how to install and use centos opencv to help you install and update the centos

have been using QT+OPENCV development projects, while in VS directly lazy use precompiled OPENCV for development, resulting in the use of OpenGL prompts "No OpenGL support": On the Internet, the reason is obvious because the precompiled library does not support OpenGL, so it is necessary to use CMake to rebuild the project. My development environment is: Win 8.1+VS2013+

Windows ms visual c ++ install opencv DownloadOpencv installer and install it. I assume you have installed onto C:/program files/opencv.Setup ms visual c ++ I write details based on MS Visual Studio 2005. Follow menus of MS VISUAL C ++ window: Tools> Options> projects and solutions> VC ++ directories> Show directory for:> include files. Now addC:/Program Files/OpenCV/cv/includeC:/Program Files/

OpenCV 3.0 has been announced in June, the new version of the API has held a liquidation, through the introduction of T-API, IPP, Neon achieved great function promotion, and change to modular layout. However, since VS2015 was released later, the OpenCV 3.0 installation package provides support for VC11 and VC12 without VC14. If you use a file under VC12, you can compile it, but the runtime will error "appli

OS X 10.10 Environment installs OPENCV 2 and 3 simultaneously via homebrewThe OS X 10.10 environment is installed by homebrew simultaneously OPENCV 2 and 3 described above我在Mac上配置OpenCV花费过很长时间，使用Win平台的同学大多数会给VS安装OpenCV库，在尝试过使用Xcode配置并建立OpenCV工程后，由于对Xcode环境的陌生以及其本身对C++支持的不完善，

My Raspberry Pi 2 just arrived yesterday, this guy looks very small and cute. This little guy has 4 cores 900MHZ of processor, 1G RAM. You know, Raspberry Pi 2 is much faster than most computers in my high school computer lab. Anyway, since Raspberry Pi 2 was released, I've received a lot of requests that I can write a detailed description of how to install OpenCV and Python on it. So if you want to start running in Raspberry Pi

Application of OpenCV in Android Use Android NDK to compile the so Library Introduction Use OpenCV2.3 + NDK R6 to compile the OpenCV Face Detection application in the linuxt System Preparation Android NDK (r5 or later) http://developer.android.com/sdk/ndk/index.html OpenCV Android pack http://sourceforge.net/projects/opencvlibrary/files/

Opencv is an open-source computer vision Library Supported by Intel. It consists of a series of C functions and a small number of C ++ classes, implementing many common algorithms for image processing and computer vision. It does not rely on other external libraries-although some external libraries can also be used. Opencv uses BSD license, which is free for non-commercial and commercial applications. The

). Optional values:Cv_chain_code: output the contour in Freeman chaincodes. All other methods output the polygon (vertex sequence ).Cv_chain_approx_none: converts all connection points to points.Cv_chain_approx_simple: compresses the horizontal, vertical, and oblique parts, that is, the function only retains their endpoint.Cv_chain_approx_tc89_l1, cv_chain_approx_tc89_kcos: Use the flavors of teh-chin chain Approximation Algorithm.Cv_link_runs: Uses completely different Edge Extraction algorith

This is a Raspberry Pi run, opencv3.OPENCV provides a handwritten digital picture to us, as shown, as a sample library for identifying handwritten numbers.0 to 9 A total of 10 numbers, each number has five lines, a row of 100 digits. First of all, we need to intercept these 5,000 numbers.The picture size is 1000*2000, and each number block size is 20*20.1. Intercept samples and storeThe following code is the process of intercepting the above numbers a

Content from Opencv-python tutorials own translation finishing Target:Gets the pixel value and modifiesGet Image PropertiesSet Image AreaSegmenting and stitching Images The above content is important to the NumPy library operation in Python, and it is important to use the NumPy library skillfully gets the pixel value and modifiesThe image value can be obtained by the coordinates of the rows and columns, and a BGR value is returned for a BGR image, and

How to copy a diagonal rectangle from an image. The general idea is as follows:1. Create a single-channel matrix mask with the same size as the source image src, and cvzero (mask);2. Use Cvpolyline () to connect a known 4 corner point to a four-sided shape, painted on the mask;3, with Cvfillconvexpoly or cvfillpoly the mask on the quad coloring;4. Use Cvcopy (src, DST, mask) to copy the quad region to DST. After cvcopy, you can use Cvresize to convert the image to a small

0. Preface This article describes how to install OpenCV in the Raspberry Pi by compiling the source code, and a simple example of how to use OpenCV. For more information, please refer to-"Raspberry Pi Study notes-index Blog"1. Download several dependencies it is a good idea to update the Raspberry Pi software source before starting the installation. If the update time is too long, please refer to the blog p

Install OpenCV 2 and 3 simultaneously in the OS X 10.10 environment through HomebrewPreviously, it took a long time for me to configure OpenCV on Mac. Most people who use the Win platform will install the OpenCV library for VS. After trying to configure and build the OpenCV project using Xcode, due to the strangeness o

OpenCV Libs Library file IPK compilationOpenCV IPK SourceUsing the OpenWrt package's compilation mechanism requires only one makefile to compile the OpenCV.Why this is so simple and magical, the following on makefile detailed (personal view, welcome correction):$vim Makefileinclude$ (topdir)/rules.mkpkg_name:=opencv#pkg_name-software package name, in menuconfig and ipkg shows the version of the pkg_version

Http://blog.sina.com.cn/s/blog_9015f3230101bbef.htmlAbout error resolutions such as Link:fatal error lnk1000/1104 in Visual Studio 2008/2010 and OPENCV platformslink:fatal error LNK1104: Can't open File ". obj"because of your common visual Studio 2008/2010 and OPENCV platform programming, like link:fatal error LNK1104: Cannot open the file ". obj";link:fatal Error L NK1104: Can't open File "Xx.lib"; link:fa

Recently in the Exercise Medicine Software optimization work, this software framework and algorithm language is fully implemented by MATLAB, although the MATLAB matrix operations, numerical computing ability is powerful, but the speed is unbearable. Software immediately ported to C + + is not practical, so the use of joint programming, the speed of an intolerable algorithm to C + + implementation, C + + in the implementation of code in the process of some numerical calculation and image processi

IntroductionMore and more computer vision tasks rely on the famous open source computer Vision Library OpenCV. OpenCV 2.0 contains a series of well-designed data structures and optimized visual algorithms that allow you to develop a good visual application in a short time. OPENCV supports a variety of different hardware and software platforms, which is an importa