It is really helpful. shape to get the dimension. Here's a full-fledged code example, using a ground truth homography, warping the pixel locations manually, and using remap() to then map the image from the transformed points. Example folder (V2. Here is the standard OpenCV tutorial, a very good starting point. hpp header file in your program. Prev Tutorial: Hough Circle Transform. First and foremost, as you might already know, OpenCV or at least standard OpenCV uses C++ and not C# so we'll need to somehow call OpenCV C++ functions from C#. OpenCV framework itself is all mixed up. install OpenCV for python3 in Jetson Nano. 0 remap causes Intel HD Graphics 5500 to stop responding. I'm also using ELP dual camera but unable to capture both the images simultaneously. OpenCV - Filter2D - The Filter2D operation convolves an image with the kernel. Skip to content. Book Description. Along with Leptonica image processing it can recognize a wide variety of image formats and extract text. Contains OpenCV Code for Image-Processing,Deep-Learning,Artificial Intelligence,Deep Learning etc. opencv wrapper for labview. I know about OO approach as I come from Java/C# world. This program detects faces in real time and tracks it. Next Tutorial: Affine Transformations. With 70 self-contained tutorials, this book examines common pain points and best practices for computer vision (CV) developers. EXE Injector in Visual Basic? How to Make a Simple Folderlocker in Windows? How to solve "Could not update. OpenCV Python Tutorial. OpenCV provides the extracted features for the classifier for both the frontal and the profile faces. Camera Calibration. It enables the programmer to express his ideas in. In the first part of this post, we'll discuss the OpenCV 3. OpenCV and Python versions: This example will run on Python 2. Once we identify the players using the object detection API, to predict which team they are in we can use OpenCV which is powerful library for image processing. Also you have to check up the implementation with Qt Framework. The example I provide uses the OpenCV's remap function, which is way faster than warpPerspective since it pre-computes all the projections that fill the destination image and store the indexes in a x-map and a y-map. The examples I found that use remap() appear to specify a matrix for ALL pixels to be remapped. 4 releases) OpenCV has a modular structure, which means that the package includes several shared or static libraries. of Channels & Type of Image OpenCV C++ Today I'm going to discuss about Depth, Number of Channels & Type of Image PC graphical interface for Arduino (Using visual studio C#). In this tutorial I will show you some of the main functions of Opencv using VisualStudio 2015 IDE and C++ programming language. py but it is exiting from the condition check by printing "No more frames" since it is unable to get both left and right grab. Image Smoothing techniques help in reducing the noise. You can perform this operation on an image using the boxFilter() method of the imgproc class. It combines the best qualities of OpenCV C++ API and Python language. OpenCV Tutorials - C++ source code for beginner using OpenCV library and Visual Studio on image processing, object detection and tracking. 1, but in the commands, i used just 230 instead of 2310. This detection method works only to track two identical objects, so for example if we want to find the cover of a book among many other books, if we want to compare two pictures. A popular computer vision library written in C/C++ with bindings for Python, OpenCV provides easy ways of manipulating color spaces. Gallery About Documentation Support About Anaconda, Inc. Cross-Platform C++, Python and Java interfaces support Linux, MacOS, Windows, iOS, and Android. Hi, I am from C back ground and done image processing applications in opencv using C. OpenCV CPU example OpenCV header files OpenCVusing namespace C++ namespace int Load an image file as grayscale Allocate a temp output image Blur the image but keep edges sharp. You can specify a single dimension size of [] to have the dimension size automatically calculated, such that the number of elements in B matches the number of elements in A. In the first part of this post, we'll discuss the OpenCV 3. 8MB(is equaled to 960x1280x4x2, which means the two floats in one position(x,y)); Applies a generic geometrical transformation to an image. The following modules are available:. OpenCV Tutorial 2: Mixed Processing This example shows how to pre-process the camera preview frames with both Java and C++ calls to OpenCV. Linux support Beta 2 Beta 3 Beta 4 Beta 5 Release 1. OpenCV log transformation in C++ help I have no books and all online resources aren't very comprehensive enough and don't properly explain the parameters for each function. All gists Back to GitHub. Tutorial 7- Change Brightness & Contrast of an image OpenCv C++ Today I'm going to show you how to change brightness & contrast of an image using OpenCv. 2), extract it to this location. the add-on supports various versions of labview application. Out of the box OpenCV C++ development plugin for Visual Studio. cpp; samples/cpp/camshiftdemo. x with latest OpenNI 2. You can also save this page to your account. c++ opencv tutorial 1. Object Detection (objdetect) - detection of objects and instances of the predefined classes (for example, faces, eyes, mugs, people, cars, and so on). The idea here is to find identical regions of an image that match a template we provide, giving a certain threshold. Computer vision and machine learning news, C++ source code for Opencv in Visual Studio and linux. projectPoints opencv. edu 4 Installing OpenCV 5 How It All Works An Example Program The Mat Class Windows And Trackbars Example Operations. um wrote a code using template matching method for detect stamp in the envelops. Do you want to remove all your recent searches? OpenCV Tutorial 10 Optical Character. GPU Support. Here is the standard OpenCV tutorial, a very good starting point. This blog provides complete guide for learning Image processing with OpenCV with all the Source Codes. Contribute to opencv/opencv development by creating an account on GitHub. Learn OpenCV data types, array types, and array operationsCapture and store still and video images with HighGUITransform images to stretch, shrink. In case when you specify the forward mapping , the OpenCV functions first compute the corresponding inverse mapping and then use the above formula. Boost Software License. OpenCV-Python is the Python API of OpenCV. Converting between ROS images and OpenCV images (Android Java) This tutorial describes how to interface ROS and OpenCV by converting ROS images into OpenCV images, and vice versa, using cv_bridge. Thus, I make a set of however many points I want, and then calculate where those points. the add-on supports various versions of labview application. This project demonstrate the Visual C++ Configuration. This blog provides complete guide for learning Image processing with OpenCV with all the Source Codes. cpp; samples/cpp/camshiftdemo. You can perform this operation on an image using the boxFilter() method of the imgproc class. In this post I will describe the process of installing OpenCV (both versions 2. What is OpenCV? OpenCV means Intel Open Source Computer Vision Library. Hi aarmea, Thanks for the post. 3 to your Visual Studio 2017 C++ Project 1 minute read This is a step by step guide that shows the process to add OpenCV to your Visual Studio Project. OpenCV supports lots of in-build filtering methods for images. Difference between copyTo,clone and assignment operator in OpenCV/ How to copy or clone an image in opencv/ What are image headers OpenCV C++ Tutorial And Examples: Difference between copyTo,clone and assignment operator in OpenCV. Also you have to check up the implementation with Qt Framework. cpp with WordPad. OpenCV Python – Read and Display Image In Computer Vision applications, images are an integral part of the development process. In the example I have given here, the image represents microarray sample spots printed to a slide using a Xaar inket printer. 2D image points are OK which we can easily find from the image. Thank you to anyone involved in making these. Tapi kalau mau coba silakan saja. bin' with 9. installed OpenCV in the default folder. At the right, choose the Tool Settings Tab. I was inspired to make this installation guide to help people avoid the stress I went through to install this on windows. 0 and cuda toolkit 10. disparity map with code source C and C++ Dear experts, I am working on a project using disparity map and after height map. Camera calibration using C++ and OpenCV September 4, 2016 Introduction. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Below is an usage of canny algorithm in c++. Install OpenCV 4 and Python I have created the following tutorials to help you install OpenCV 4 with Python 3 bindings on your macOS, Ubuntu, and Raspberry Pi machines. 1\include\opencv in the include tab to get things to work. This will make sure our programs can find the needed DLL's to run. OpenCV Install. Deep Learning with OpenCV. Explore Popular Topics Like Government, Sports, Medicine, Fintech, Food, More. Tutorial accessing video with Code::Blocks and OpenCV Leave a comment Posted by xcodelovers on February 4, 2011 In this tutorial, we will learn how to access video (ex. Hi does any one know how to use it a function for 3d reconstruction. It can be used to let Eigen interface without any overhead with non-Eigen data structures, such as plain C arrays or structures from other libraries. Anaconda Cloud. As in any other signals, images also can contain different types of noise, especially because of the source (camera sensor). Mapping not working as expected when using remap. OpenCV C++ Homography Example Images in Figure 2. This volume covers the entire library, in its modern C++ implementation, including machine learning tools for computer vision. In the first part of this post, we'll discuss the OpenCV 3. A full-featured CUDAand OpenCL interfaces are being actively developed right now. ユーザが正順のマッピング: を指定した場合,OpenCV の関数は最初に,対応する逆マッピング: を求めてから上述の式を利用します. 幾何学変換の実際の実装では,最も汎用的な remap() から,最も単純で高速な resize() まで,上述の式を用いて2つの主な問題. Cross-Platform C++, Python and Java interfaces support Linux, MacOS, Windows, iOS, and Android. Apply Blur filter effect on an image in OpenCV with Visual Studio 2015 in Windows 10. Opencv rectangle drawing tutorial C++. Thank you, I will try with a clean flashed TX2. Install OpenCV 4 with Python 3 on Windows Posted on September 17, 2016 by Paul. You can perform this operation on an image using the boxFilter() method of the imgproc class. First of all, open your C++ IDE and create a new project. This video will show you how to use C++ in Android Studio to make a OpenCV project for Android Devices. Calculate OpenCV warpPerspective Map For Reuse (C++) At work, I was working on an OpenCV project that utilized warpPerspective quite extensively for real-time perspective correction. 3 You see that the use of Mat and other basic structures is simple. Python and Java. 0 was released in October of 2009 and includes major improvements in C++ interface. It is very simple code, if you input overlap images. Native part of the example implements the same FAST feature detector, but it calls CUDA implementation: JNIEXPORT void JNICALL. We will share code in. opencv) submitted 5 years ago by aravindraj am doing a final year project using opencv and c++ for hand gesture recognition. installed OpenCV in the default folder. // out of the various interpolating functions, used by the above function for "ifunc", here's the bicubic variant as an example: template < class CastOp, typename AT, int ONE > static void remapBicubic ( const Mat & _src, Mat & _dst, const Mat & _xy,. OpenCV - Fun with remap Labels: image processing, opencv. 4 with Intel IPP 8. cpp with WordPad. In this tutorial, we will discuss the various Face Detection methods in OpenCV and Dlib and compare the methods quantitatively. Contribute to spmallick/learnopencv development by creating an account on GitHub. However you will need to read that book for it. The reason you might want to convert from floating to fixed-point representations of a map is that they can yield much faster (2x) remapping operations. i wanna reduce that time, is this possible? this is my code. Java and C++ API usage. Terus, kalau mau pakai yang OpenCV 3. For this first tutorial I am going to walk through the steps of installing OpenCV 2. My project allows to segment head from video sequence which get from camera. Tutorial 4 -Depth, No. If a common feature can not be found in the image, stitching may fail. Open Source Computer Vision Library. OpenCV image objects can be converted into a form usable by dlib routines by using cv_image. Contains OpenCV Code for Image-Processing,Deep-Learning,Artificial Intelligence,Deep Learning etc. Digital Image Processing using OpenCV (Python & C++) Highlight: In this blog post, we will give an overview of what a pixel is, how a computer understands it and how pixels can be accessed and manipulated using OpenCV. Contains OpenCV Code for Image-Processing,Deep-Learning,Artificial Intelligence,Deep Learning etc. This Learning Path is your guide to understanding OpenCV concepts and algorithms through real-world examples and activities. opencv / samples / cpp / tutorial_code / ImgTrans / Remap_Demo. But, remember that if you want transmit the video, the use of a encoder. In other words, it moves the pixels to different locations in the same image, shuffles, rearranges the pixels. Download codeblocks without mingw. Using OpenCV, you can read an image and store it in a matrix. However, in video both the slight and major variations from these positions are present. Anaconda Community. In the work, we use a subset of publicly available ImageNet dataset and divide data on two sets - tiger cats and non-cat objects, which consist of images of 10 random chosen object types. Erode video with OpenCV Now I am going to show you how to perform erode morphological operation on a video using an OpenCV C++ example. Object Detection (objdetect) - detection of objects and instances of the predefined classes (for example, faces, eyes, mugs, people, cars, and so on). In C/C++ Build, click on Settings. cmake file in OpenCV source and make sure it can find the correct version of Intel IPP 8. C++ Release 2. Can you tell me OpenCV remap slower than ippiRemap? Or there is no difference in implementation of remap algorithm? I tried Cuda remap but download\upload from memory to GPU memory very slower and result is slower than CPU remap. Now we'll actually implement it. /calibration -h 11 -w 4 -o camera. A fully working image display example is illustrated as well. That header file will include all the other necessary. MSER opencv C++ example. Then copy this code and paste it to your project. Unfortunately, this cheapness comes with its price: significant distortion. Load and display an image with OpenCV. Stitching input images (panorama) using OpenCV with C++ This program is intended to create a panorama from a set of images by stitching them together using OpenCV library stitching. py but it is exiting from the condition check by printing "No more frames" since it is unable to get both left and right grab. Learn OpenCV with basic implementation of different algorithms. It is simple and easy. I'd like to try a remap by specifying where I want the 3x7 matrix of points to appear. I found that OpenCV also has a wrapper written around flann so checked if there exists a simple example. OpenCV Tutorials for image processing using OpenCV 3. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. It is great improvement. Thanks to your tutorial, I managed opencv within unity and I studied your scripts very well in such a way that I edit them for my project, but my real project is a bit different. Simply put this tutorial will take you from scratch to point cloud USING YOUR OWN PHONE CAMERA and pictures. Well, it stands for ‘Open Source Computer Vision Library’ initiated by some enthusiast coders in Z1999 to incorporate Image Processing into a wide variety of coding languages. Apply Blur filter effect on an image in OpenCV with Visual Studio 2015 in Windows 10. •namedWindow is used for viewing. You can vote up the examples you like or vote down the exmaples you don't like. Process bitmaps with OpenCV. We can use the C/C++, Python or Java bindings to accomplish this. OpenCV was originally written in C for maximum performance and portability. But the reason for this is this only occurs in particular stero vision configurations. OK, let's move on to next program example in book "Learning OpenCV". 4' into merge-3. Thus providing a crucial step towards computer vision. // out of the various interpolating functions, used by the above function for "ifunc", here's the bicubic variant as an example: template < class CastOp, typename AT, int ONE > static void remapBicubic ( const Mat & _src, Mat & _dst, const Mat & _xy,. cpp; samples/cpp/convexhull. Packed with many examples, the book will help you understand the main data structures used within OpenCV, and how you can use them to gain performance boosts. • OpenCV provides simple and useful ways to read and write images. Now I struggle to try complile on Jetson TX2 platform a small OpenCV C++ example use CUDA. opencv) submitted 5 years ago by aravindraj am doing a final year project using opencv and c++ for hand gesture recognition. Here is a list of algorithms you can experiment on to make OpenCV handy. 8MB(is equaled to 960x1280x4x2, which means the two floats in one position(x,y)); Applies a generic geometrical transformation to an image. any feed back will be appreciated. I am using OpenCV 2. 7, but the official installation instruction for tensorflow. How to build OpenCV C++ and run hello world example 2018 in windows. The library is cross-platform, and runs on Mac OS X, Windows and Linux. Here is the standard OpenCV tutorial, a very good starting point. x, CvInvoke function calls use the C interface. I wrote this tutorial to save some time for others like me that need to do some quick and dirty video editing with C++ and OpenCV. 410 to implement a project. MSER opencv C++ example. hpp" #include #include using namespace cv; /// Global variables. OK, I Understand. Net wrapper for OpenCV. Out of the box OpenCV C++ development plugin for Visual Studio. This project demonstrate the Visual C++ Configuration. They are extracted from open source Python projects. OpenCV - Filter2D - The Filter2D operation convolves an image with the kernel. NET (C#, VB. Tutorial on OpenCV for Android Setup EE368/CS232 Digital Image Processing, Spring 2015 Windows Version For Motorola Droid phones Introduction In this tutorial, we will learn how to install OpenCV for Android on your computer and how to build Android applications using OpenCV functions. mm for all classes where you’d like to use OpenCV, including view controllers. This isn't a tutorial, it's an example of examples for the purpose of learning. How to Install OpenCV (3. My project allows to segment head from video sequence which get from camera. what is the reason? the video refresh every 1 sec. After simple program to display image, now we write simple program to play a video file. It is really helpful. What the remap function does, is to remap your image pixels to other areas of the image, according to the chosen mapping functions. Also you have to check up the implementation with Qt Framework. This example creates a MEX-file from a wrapper C++ file and then tests the newly created file. You can follow the video tutorial along with this post here. Calculating moments of an image in OpenCV, moments, shape detection using moments example in OpenCV. Ceemple OpenCV is now available for free for everybody. It has C++, Python, Java and MATLAB interfaces and supports Windows, Linux, Android and Mac OS. Below is an usage of canny algorithm in c++. You can vote up the examples you like or vote down the ones you don't like. Thus, I make a set of however many points I want, and then calculate where those points. For this first tutorial I am going to walk through the steps of installing OpenCV 2. OpenCV C++ Tutorials along with some Sample Source Codes and Examples: OpenCV (Open Source Computer Vision) is a library of programming functions mainly aimed at real-time computer vision. The OpenCV Reference Manual, Release 2. \$\begingroup\$ It is a rework of OpenCV2 example. 410 to implement a project. But there are 2 more parameters. It is free for commercial and research use under a BSD license. I have worked with openCV for quite sometime now, both in C++ and Python. opencv Tutorial opencv YouTube This modified text is an extract of the original Stack Overflow Documentation created by following contributors and released under CC BY-SA 3. remap () Examples. Using OpenCV in Microsoft Visual C++. Learning OpenCV puts you in the middle of the rapidly expanding field of computer vision. Go to your opencv31 directory and go sources -> samples -> cpp -> tutorial code -> ImgProc and open Morphology_1. py but it is exiting from the condition check by printing "No more frames" since it is unable to get both left and right grab. The actual implementations of the geometrical transformations, from the most generic remap() and to the simplest and the fastest resize(), need to solve two main problems with the above formula:. Build and run the HelloWorld example in OpenCV could seem difficult, especially when almost no guide works. CONCEPT Interpolation works by using known data to estimate values at unknown points. cpp; samples/cpp/cout_mat. cpp; samples/cpp/convexhull. Homography Examples using OpenCV ( Python / C ++ ) January 3, 2016 By Satya Mallick 42 Comments. In fact, to avoid sampling artifacts, the mapping is done in the reverse order, from destination to the source. You have to configure your new project in order to use OpenCV library functions. They do not change the image content but deform the pixel grid and map this deformed grid to the destination image. There are over 500 algorithms and about 10. Latest releases introduced support to GPU calculation (CUDA, OpenCL), Android platform, iOS platform and Linux Embedded platforms. A popular computer vision library written in C/C++ with bindings for Python, OpenCV provides easy ways of manipulating color spaces. Build and run the HelloWorld example in OpenCV could seem difficult, especially when almost no guide works. Anyway I'm working with IP cameras with gstreamer + opencv. 0 on Windows. •All original functions and classes of the C standard OpenCV components in the Bradski book are still available and current. 2, do check out the new post. Existing OpenCV language bindings make it possible to use the library in languages other than the native C and C++, e. However, in video both the slight and major variations from these positions are present. My project allows to segment head from video sequence which get from camera. remap function (OpenCV 2. Can you tell me OpenCV remap slower than ippiRemap? Or there is no difference in implementation of remap algorithm? I tried Cuda remap but download\upload from memory to GPU memory very slower and result is slower than CPU remap. (OpenCV Study) Background subtractor MOG, MOG2, GMG example source code (BackgroundSubtractorMOG, BackgroundSubtractorMOG2, BackgroundSubtractorGMG) Background subtractor example souce code. 3) on Debian Linux (especially Debian-6). Best regards Viktor. OpenCV Tutorials - C++ source code for beginner using OpenCV library and Visual Studio on image processing, object detection and tracking. MSER opencv C++ example. OpenCV log transformation in C++ help I have no books and all online resources aren't very comprehensive enough and don't properly explain the parameters for each function. The idea of video player is we grab each frame/image then display it in certain rate. Can you build a minimal example that shows remap is working? crossfire5. cvAnd(IntPtr src1, IntPtr src2, IntPtr dst, Intptr mask) has been replaced by. I'm also using ELP dual camera but unable to capture both the images simultaneously. years ago I built a stripped-down branch of opencv for ARM, using C, and integrating optimizations necessary at the time. OpenCV Tutorial C++. Here is a list of algorithms you can experiment on to make OpenCV handy. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. The code provided should run straight out of the Emgu. OpenCV Tutorial: Real-time Object Detection Using MSER in iOS Altaibayar Tseveenbayar With a master's degree in AI and 6+ years of professional experience, Altaibayar does full-stack and mobile development with a focus on AR. @ How do I include and use C++ OpenCV in Android Stud. There are over 500 algorithms and about 10. the add-on supports various versions of labview application. Didn't know what a whell file was or how to use pip. Then you can test a sample program which are available in your opencv samples. If you are installing OpenCV on a Jetson Nano, or on a Jetson TX2 / AGX Xavier with JetPack-4. Free tutorials and reference manuals with examples for Java, Android, C++, C, Python, Linux, Qt. Tutorial; API Documentation; Version History; Bug Tracking; Licensing: Source Code (GitHub) Download Open Source Release; About Emgu CV: OpenCV in. disparity map with code source C and C++ Dear experts, I am working on a project using disparity map and after height map. imgcodecs provides methods to read and write images. The examples I found that use remap() appear to specify a matrix for ALL pixels to be remapped. I know about OO approach as I come from Java/C# world. Thank you, I will try with a clean flashed TX2. Camera calibration With OpenCV. Gallery About Documentation Support About Anaconda, Inc. Find tutorials for Image processing algorithms in OpenCV and Matlab, Programming in C, Java-scripts, Tips and Tricks, Hacking and lots more Sunday, June 20, 2010 OPENCV Tutorial - Basic operations for images Dilate/Erode. You can also use these support files to build MEX-files that call OpenCV functions. What the remap function does, is to remap your image pixels to other areas of the image, according to the chosen mapping functions. OpenCV-Python Python is a general purpose programming language started by Guido van Rossum, which became very popular in short time mainly because of its simplicity and code readability. You may remember back to my posts on building a real-life Pokedex, specifically, my post on OpenCV and Perspective Warping. shape: Height is at index 0, Width is at index 1; and number of channels at index 2. How to Backpropagation Neural Network with C++? OpenCV with Qt C++ Examples (Showing Image) How to Call. of Channels & Type of Image OpenCV C++ Today I'm going to discuss about Depth, Number of Channels & Type of Image PC graphical interface for Arduino (Using visual studio C#). image_geometry: Collection of methods for dealing with image and pixel geometry. A couple of months ago, I had told you about a new OpenCV-Python tutorial was under development. Things to know: (1) The code will only compile in Linux environment. I found that OpenCV also has a wrapper written around flann so checked if there exists a simple example. OpenCV C++ Program for Face Detection This program uses the OpenCV library to detect faces in a live stream from webcam or in a video file stored in the local machine. Really opencv was an awesome article… very interesting to read… Thanks for sharing. shape to get the dimension. OpenCV's claim to fame is it's ability to effortlessly work with video feed, either live or recorded. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. •All original functions and classes of the C standard OpenCV components in the Bradski book are still available and current. dual degree program from IIT Kanpur. remap × 95 OpenCV 3. sample source code of c++ using Opencv3. Note here that my homography transforms true_dst to src. Opencv knnSearch example After searching through the web and going through the FLANN api I could not find a decent example that showcases the K nearest neighbor search capability. 3 to your Visual Studio 2017 C++ Project 1 minute read This is a step by step guide that shows the process to add OpenCV to your Visual Studio Project. The wrapper can be compiled by Visual Studio, Xamarin Studio and Unity, it can run on Windows, Linux, Mac OS X, iOS, Android and Windows Phone. I have implemented code for using OpenCV 2. OpenCV 4 Computer Vision Application Programming Cookbook: Build complex computer vision applications with OpenCV and C++, 4th Edition [David Millan Escriva, Robert Laganiere] on Amazon. cpp; samples/cpp/camshiftdemo. OpenCV has an re-map function that lets you map pixels of an image from one position to another. We implement well-known Bag of Words algorithm (BoW) in order to perform image classification of tiger cat images. A full-featured CUDAand OpenCL interfaces are being actively developed right now. That header file will include all the other necessary. OpenCV was originally written in C for maximum performance and portability. This is a very simple example of how to open two images and display them added. ,i need examples like that to learn and any resources ?. C:\Program Files. Python example code on how to use convertMaps OpenCV function If you have found yourself using the OpenCV remap function , you may have noticed a reference to a convertMaps function. There are a lot of question asking how to setup the code::block for working with the OpenCV library. 0 was released in October of 2009 and includes major improvements in C++ interface. The Box Filter operation is similar to the averaging blur operation; it applies a bilateral image to a filter. • highgui - an easy-to-use interface to video capturing, image and video codecs, as well as simple UI capabilities. // Title: OpenCV C++ Program to blur an image. Hello everyone, this is part three of the tutorial face recognition using OpenCV. You can vote up the examples you like or vote down the exmaples you don't like.