Tutorial by Examples: cv

OpenCV (Open Source Computer Vision Library) is an open source computer vision and machine learning software library. It was built for various purpose such as machine learning, computer vision, algorithm, mathematical operations, video capturing, image processing etc. Over the years it has become ve...

To install/update MVC version, follow these steps: In visual studio, open the Package Manager console (use CTRL + Q, and type package manager console) In the console appearing, enter the following after the console cursor showing PM>: Install-Package Microsoft.AspNet.Mvc -Version 5.2.3...

DBCC commands enable user to validate state of database. ALTER TABLE Table1 WITH NOCHECK ADD CONSTRAINT chkTab1 CHECK (Col1 > 100); GO DBCC CHECKCONSTRAINTS(Table1); --OR DBCC CHECKCONSTRAINTS ('Table1.chkTable1'); Check constraint is added with nocheck options, so it will not be ...

this can also be cv-qualified, the same as any other pointer. However, due to the this parameter not being listed in the parameter list, special syntax is required for this; the cv-qualifiers are listed after the parameter list, but before the function's body. struct ThisCVQ { void no_qualifi...

Basic reading image from java import org.opencv.core.Core; import org.opencv.core.Mat; import org.opencv.imgcodecs.Imgcodecs; //Load native library System.loadLibrary(Core.NATIVE_LIBRARY_NAME); //Mat object used to host the image Mat imageArray; //Read image file from vile system ima...

There is no imshow in the java, you need to write a method for this. This method is a Mat2bufferedImage. Takes mat object as parameter and returns image. public static void main(String[] args) { Mat frame = new Mat(); //0; default video device id VideoCapture camera = new VideoCaptur...

The Vector3 structure contains some static variables that provide commonly used Vector3 values. Most represent a direction, but they can still be used creatively to provide additional functionality. Vector3.zero and Vector3.one Vector3.zero and Vector3.one are typically used in connection to a...

library(dplyr) library(nycflights13) There are several verbs most commonly used in dplyr to modify datasets. select Select tailnum, type, model variables from the dataframe planes: select(planes, tailnum, type, model) ## # A tibble: 3,322 × 3 ## tailnum type mode...

mvc demo Hello World

/* These variables are declared with `NO-UNDO`. That state...

Source Link Open the Terminal and write the following commands. 1-Update and upgrade package your system ubuntu: sudo su sudo apt-get -y update sudo apt-get -y upgrade sudo apt-get -y dist-upgrade sudo apt-get -y autoremove 2-Installing Dependenices: sudo apt-get install libopencv...

The only place where you can safely use async void is in event handlers. Consider the following code: private async Task<bool> SomeFuncAsync() { ... await ... } public void button1_Click(object sender, EventArgs e) { var result = SomeFuncAsync().Result; SomeOtherFunc(); } ...

VideoWriter videoWriter; videoWriter = new VideoWriter(outputFile, VideoWriter.fourcc('x', '2','6','4'), fps, frameSize, isRGB); //We have stated that we will use x264 as codec with FourCC //For writing, we add the following method and it will write the image we give as parameter...

The vertical layout set up the object inside it vertically. #include "mainwindow.h" #include <QApplication> #include <QMainWindow> #include <QWidget> #include <QVBoxLayout> #include <QPushButton> int main(int argc, char *argv[]) { QApplication...

Example for a functional view to create an object. Excluding comments and blank lines, we need 15 lines of code: # imports from django.shortcuts import render_to_response from django.http import HttpResponseRedirect from .models import SampleObject from .forms import SampleObjectForm # vie...

The above example only works if your tasks are entirely standard tasks. You do not add extra context here, for example. Let's make a more realistic example. Assume we want to add a page title to the template. In the functional view, this would work like this - with just one additional line: def cr...

The true power of generic views unfolds when you combine them with Mixins. A mixin is a just another class defined by you whose methods can be inherited by your view class. Assume you want every view to show the additional variable 'page_title' in the template. Instead of overriding the get_context...

A generalization of std::condition_variable, std::condition_variable_any works with any type of BasicLockable structure. std::cv_status as a return status for a condition variable has two possible return codes: std::cv_status::no_timeout: There was no timeout, condition variable was notified st...

This is an advanced subject, do not attempt without first understanding the other examples of this page. As stated in the official Django Rest Framework on pagination: Pagination is only performed automatically if you're using the generic views or viewsets. If you're using a regular APIView, you...

Numeric values can compared with = and the other numeric comparison operators (/=, <, <=, >, >=) that ignore the difference in the physical representation of the different types of numbers, and perform the comparison of the corresponding mathematical values. For instance: (= 42 42) T ;...