emgucv Questions
6
Solved
I've got an image that I've scanned, but the white paper is not white on the screen. Is there a way to equalize the contract/brightness to make the background whiter?
Update
I've tried the sugg...
Mousse asked 12/5, 2012 at 5:2
12
I'm getting this error:
The type initializer for 'Emgu.CV.CvInvoke' threw an exception.
When I try to use Emgu CV. I've tried everything I can think of to fix this, but it's still giving the same...
3
Solved
I am creating a windows application using C#, where in a button on the GUI when clicked, should display the on-screen keyboard.
Would appreciate if any help is granted. thanks.
Also, since I am m...
Sellingplater asked 10/1, 2012 at 8:7
2
Solved
I am trying to write a function that will take an image and return me a list of images with only tables using EMGU.CV or Magick.Net or AForge.Net
for example for the below image the function should...
Bittersweet asked 4/1, 2019 at 14:55
3
Solved
I need to convert a Mat to an Image in Emgu CV. Trying to cast a Mat to an image produces an exception: Cannot implicitly convert type 'Emgu.CV.Mat' to 'Emgu.CV.Image
Image<Bgr, Byte> imgeOr...
5
Solved
I'm using the EmguCV 3.0.0 wrapper to the OpenCV 3.0 library. I'm using the Mat class in a few places. Here's an example of a single channel, 8x8 image made of double values:
Mat image = new Mat(8...
Tarentarentum asked 27/8, 2015 at 17:4
11
i'm trying to debug my program, using emgu and HaarCascade in c#.
i'm getting an exception like so :
Unable to load DLL 'cvextern': The specified module could not be found. (Exception from HRE...
5
Have searched on Stackoverflow.com and google. But didn't found any proper method to do so apart from the link shown below.
compare two images and extract the difference using emgu cv library
Ple...
2
i am using the new EmguCV 3.0.0 alpha to detect a chessboard with webcam and have an understanding problem with the corners matrix.
Size patternSize = new Size(5, 4);
Matrix<float> corners...
2
Solved
I am using YOLOv3 to detect cars in videos. I downloaded three files used in my code coco.names, yolov3.cfg and yolov3.weights which are trained for 80 different classes of objects to be detected. ...
Saragossa asked 12/9, 2019 at 1:22
6
I am trying to run the example of LicensePlateRecognition in EmguCV 3.1. But I always get the error System.DllNotFoundException and the message is that "cvextern.dll cannot be loaded". I am running...
5
I'm trying to install emgu.CV.runtime.windows from within Visual Studio 2017, and installing by the recommeded method of right-clicking references and installing via NuGet.
However I am getting the...
3
I have a .Net Standard 2.0 project with latest version of Emgu.CV - 4.2.0.3636 installed via Nuget package. I also have System.Drawing.Common package which brings support for bitmaps. I need a poss...
3
Solved
I want to reduce the number of unique colors of a bitmap in c#.
The reason I want to do this is that an image which is initially created with three color but due to many factors (including compres...
Lukasz asked 8/7, 2011 at 10:18
2
Solved
If you are familiar with OpenCV library, you know what Haar Cascade image object detection is. By image object detection I mean, like human face detection or something else.
I have some Haar ...
2
Solved
Is there any way to convert an Image of type System.Drawing.Image in to Image of Emgu.CV.Image type or vice versa on EmguCV using C#? I will explain per your request if additional explanation is ne...
Seagirt asked 6/5, 2013 at 21:54
1
Solved
I've been trying to re-scale an Emgu.CV.Mat with depth 32F and value range [0,1] (a grayscale image) to range [0,255] in order to visualize it in a ImageBox object contained in a Visual Basic form,...
1
Solved
I have an image which I grab using a camera. Sometimes, the lighting is uneven in them image. There are some dark shades. This causes incorrect optimal thresholding in EMGU as well as Aforge to pro...
Prolongate asked 5/9, 2019 at 11:31
7
Solved
I'm trying to start using emgu CV open CV for C#. But I'm having trouble making it work.
I'm following this guide to make simple program using emgu CV Link but I get following error: (any idea what...
3
Solved
Is there a way to prevent auto-focus from focusing, using any of the "standard" libraries, such as OpenCV, EmGU, DirectShow, etc?
I want auto-focus to find the optimal focus, then during video cap...
Fideicommissum asked 30/4, 2019 at 14:45
2
Solved
I want to remove all horizontal and vertical lines but some small vertical lines are not getting removed.
Adding the input and output images and the code below.
string ImageUrl = @"C:\Users\Jayan...
Frawley asked 28/12, 2018 at 7:54
1
Solved
I have a utility I'm testing with a few other people, that takes screenshots of another window and then uses OpenCV to find smaller images within that screenshot.
That's working without a problem,...
1
Solved
Im trying to increase the sharpness of an image using EmguCV
Image<Bgr, Byte> myImage = new Image<Bgr, Byte>(new Bitmap(pictureBox1.Image));
float[,] matrixKernel = new float[3, 3] {...
2
I have followed the sample code from the code project to create a face recognition system using EMGUCV. I have trained the database with 2 people and each person has 10 images. When the webcam dete...
Civility asked 10/8, 2017 at 13:37
2
Solved
What is the difference between OpenCV.NET, OpenCVSharp and EmguCV?
They are derived from OpenCV.
So, what is the difference in their design, implementation and application philosophies?
Ault asked 1/6, 2016 at 11:34
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