All Questions
1,444
questions
-3
votes
0
answers
34
views
Processing frames from a video using OpenCvSharp make the cpu usage reaching 100%. is there a way to avoid the cpu from reaching that high usage? [closed]
this is the class code:
i used the profiler to see where and when the cpu usage reach 100%.
it happens on this lines:
when reading:
if (_videoCapture.Read(frame))
and when converting:
return ...
- 11.2k
-1
votes
0
answers
43
views
how to use OpenCvSharp record video,10 minute per file
I use OpenCvSharp to record video, 10 minute per file,but the code I wrote must be somewhere wrong, when I see the video,the video takes 12 minutes 29 seconds.here is the code.
using OpenCvSharp;
...
- 1
0
votes
0
answers
30
views
MarshalDirectiveException Error while using opencv dll for unity
I'm trying to make unity show rtsp video using opencv. I made custom dll using c++, which uses opencv dll.
What I need now is to use dll in unity to Display rtsp, but I'm getting some weird Error.
Is ...
- 1
0
votes
0
answers
17
views
Trying to generate a texture for a new UV set from the original UV set and texture, but would like to capture more of the texture to eliminate seams
As I said, I have a mesh that I decided to redo the UVs on, and in order to save time, I've stored the original UVs by face, as well as the new UVs to separate files. The code I have successfully ...
- 846
0
votes
0
answers
26
views
OpenCVSharp: Cv2 Methods seem to lead to uncaught errors in promise
I am working with OpenCVSharp in asp.net Blazor to continuously detect the edges of a document from a video. I am currently stuck getting an error with a message that tells me nothing about a problem ...
- 33
0
votes
1
answer
44
views
How to convert a OpenCvSharp Mat to a Windows.Graphics.Imaging.SoftwareBitmap efficiently?
I'm capturing images from a camera with OpenCvSharp as Mat objects.
Now I'd like to show them as a preview in a WinUI3 application.
So for this, I need to convert the Mat images to a SoftwareBitmap.
I ...
- 15
0
votes
1
answer
66
views
Partial errors computing affine transform with OpenCV
I've been working a lot with OpenPnP recently (which is great!), and have had my interest peaked enough to try and really understand it's workings.
I am trying to produce a basic transformation of a ...
- 302
0
votes
1
answer
69
views
Detect a line with a certain width from an image using OpenCV
I have an image of pixels (1023 x 768). I would like to detect the line in that image, find its angle and position.
I am working with C# and the package OpenCVSharp, but the language isn't of concern.
...
- 325
1
vote
0
answers
41
views
How to Determine the Center of Two Curvilinear Lines and Display the Points on a Windows Form Picture Box using OpenCV?
I'm trying to find a way to determine the centre point between two lines, at different positions, using OpenCV in C#. In Roborealm, I achieved this using the edge_probe technique, as illustrated in ...
- 11
-1
votes
1
answer
210
views
Image detection using OpenCvSharp - C#
interested in computer vision and automation. Now I want to find a small image on another large image. For Python I have seen a large amount of code and everything just works for them.
But, it doesn't ...
- 41
0
votes
1
answer
332
views
OpenCvSharp VideoCapture super slow upon Initialization
I am using OpenCvSharp's VideoCapture class to capture images from a camera, from which I use to display as a video stream. I am using this camera that is attached via USB.
The problem that I have is ...
- 45
2
votes
0
answers
88
views
Emgu Cv How To Stitch with GPU
I'm trying to stitch together 1000 tiled images together to create one large image. I've been trying to use Emgu CV, but I just need to the process to run faster. So I'm trying to use the GPU ...
- 105
0
votes
0
answers
28
views
'System.IO.FileNotFoundException' An uncatchable exception of type,Emgu.CV.World.dl loccurred in File '{0}' not found
//Form1.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
...
0
votes
1
answer
204
views
How to convert OpenCvSharp.Mat to Emgu.CV.Mat?
I'm using OpenCVSharp for image processing, but now I also need some of the features of Emgu CV to detect faces in my images.
I have the following minimal example:
public static void DetectFace(...
- 1,738
0
votes
1
answer
107
views
VS2022 'Could not load file or assembly 'Emgu.CV, Version=4.7.0.. located assembly's manifest definition does not match the assembly reference [closed]
I'm getting this error at runtime in a C# windows forms application after I replaced the EmguCV 4.7.0 library files with 4.6.0. I downgraded because 4.7.0 does not have support for CUDA yet.
I did not ...
- 3,542