emgucv

How to Convert Emgu.Cv.Image<Gray,byte> to System.Image

允我心安 提交于 2019-12-05 10:23:05
I was new to Emgu Cv and i was wondering if someone could let me know how i change Emgu.Cv.Image to System.Image?If there is a need for further explanation, let me know and i will do it.The language i am using is C#. You can just use the ToImage() method to get a System.Drawing.Bitmap (which is a derived class of System.Drawing.Image ), so something like this // create an Emgu image of 400x200 filled with Blue color Image<Bgr, Byte> img = new Image<Bgr, byte>(400, 200, new Bgr(255, 0, 0)); // copy to a .NET image System.Drawing.Image pMyImage = img.ToBitmap(); Is that what you mean? 来源: https:

Remove all horizontal and vertical lines from an image

扶醉桌前 提交于 2019-12-05 10:16:10
问题 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\Jayant\Desktop\test images\rtaImage.tiff"; Image<Bgr, Byte> image = new Image<Bgr, byte>(ImageUrl); Image<Bgr, byte> res = image.Copy(); LineSegment2D[] lines = image .Convert<Gray, byte>() .Canny(16, 16) .HoughLinesBinary(1, Math.PI / 16, 10, 50, 1)[0]; foreach (LineSegment2D line in lines) { res.Draw

How do I choose an image interpolation method? (Emgu/OpenCV)

≯℡__Kan透↙ 提交于 2019-12-05 09:40:41
问题 The image resizing function provided by Emgu (a .net wrapper for OpenCV) can use any one of four interpolation methods: CV_INTER_NN (default) CV_INTER_LINEAR CV_INTER_CUBIC CV_INTER_AREA I roughly understand linear interpolation, but can only guess what cubic or area do. I suspect NN stands for nearest neighbour, but I could be wrong. The reason I'm resizing an image is to reduce the amount of pixels (they will be iterated over at some point) whilst keeping them representative. I mention this

Detecting people crossing a line with OpenCV

匆匆过客 提交于 2019-12-05 05:12:28
问题 I want to count number of people crossing a line from either side. I have a camera that is placed on ceiling and shooting for the floor where the line is (So camera sees just top of people heads; and so it is more of object detection than people detection). Is there any sample solution for this problem or similar problems like this? So I can learn from them? Edit 1: More than one person is crossing the line at any moment. 回答1: If nothing else but humans are subject to cross the line then you

How to convert Bitmap to Mat structur in EmguCV & How to detect two images shift

僤鯓⒐⒋嵵緔 提交于 2019-12-05 01:49:45
Hello Dear Forum Members ! I am working on a project to detect change view from security camera. I mean, when someone try to move camera (some kind of sabotage...) I have to notice this. My idea is: capture images from camera every 10 sec and compare this two pictures ( Old and actual picture). There are almost 70 cameras which I need to control, so I can't use live streaming because it could occupy my internet connection. I use Emgu CV library to make this task, but during my work I stuck with some problem.. Here im piece of my code what I prepared: public class EmguCV { static public Model

Improving circle detection

最后都变了- 提交于 2019-12-05 00:53:27
问题 I am trying to detect circles in my images. I have written the following code in C# using EmguCV. Most of the times it works, but there are some cases that it detects smaller or larger circles that are slightly shifted to a side. Here is my code: Thread.Sleep(1000); imgCrp.Save(DateTime.Now.ToString("yyMMddHHmmss") + ".jpg"); imgCrpLab = imgCrp.Convert<Lab, Byte>(); imgIsolatedCathNTipBW = new Image<Gray, Byte>(imgCrp.Size); CvInvoke.cvInRangeS(imgCrpLab.Split()[2], new MCvScalar(0), new

Alpha composite images using emgu.cv

空扰寡人 提交于 2019-12-04 18:57:11
Emgu.CV (Nuget package 2.4.2) doesn't as far as I can tell implement the gpu::alphaComp method available in OpenCV. As such when trying to implement this specific type of composite it is incredible slow in C#, such that it takes up some 80% of the total cpu usage of my app. This was my original solution that performs really badly. static public Image<Bgra, Byte> Overlay( Image<Bgra, Byte> image1, Image<Bgra, Byte> image2 ) { Image<Bgra, Byte> result = image1.Copy(); Image<Bgra, Byte> src = image2; Image<Bgra, Byte> dst = image1; int rows = result.Rows; int cols = result.Cols; for (int y = 0; y

Get and Set Pixel Gray scale image Using Emgu CV

百般思念 提交于 2019-12-04 15:12:38
I am trying to get and set pixels of a gray scale image by using emgu Cv with C#. If I use a large image size this error message occurs: "Index was outside the bounds of the array." If I use an image 200x200 or less then there is no error but I don't understand why. Following is my code: Image<Gray , byte> grayImage; -------------------------------------------------------------------- for (int v = 0; v < grayImage.Height; v++) { for (int u = 0; u < grayImage.Width; u++) { byte a = grayImage.Data[u , v , 0]; //Get Pixel Color | fast way byte b = (byte)(myHist[a] * (K - 1) / M); grayImage.Data[u

How can I measure distances in stereo images?

杀马特。学长 韩版系。学妹 提交于 2019-12-04 14:49:15
问题 I Have two images( left and right ) I want to measure the real distance on image? When I click on the image, ı ll get real distance to clicked point to camera. Left Image: Right Image: I have calibrated the two images. I want to use EmguCV to get distance from image. Is this possible ? 回答1: While I do not know the specifics of EmguCV, I can tell you the concept behind how stereo depth perception works, and hopefully you can then implement some sort of fix. Essentially, the first step is to

Emgu CV and the official Microsoft Kinect SDK?

这一生的挚爱 提交于 2019-12-04 14:10:49
Emgu CV currently allows the use of the Kinect with the OpenNI drivers . I've also seen that there exists an mssdk-openni bridge application to allow the Kinects running on the official Microsoft SDK to emulate OpenNI driven Kinects. Has anyone been successful in getting a Kinect running on the Microsoft SDK to work with Emgu CV, either with the mssdk-openni bridge or directly? Are there any tips on getting it running smoothly, or pitfalls to avoid? Yeah. I've simply installed the SDK and could capture and extract bitmaps of the video stream. The MSSDK for Kinect works just fine and easy. You