All Questions
Tagged with opencv object-detection
1,047
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OpenCV finger extraction from image / liveview from camera and draw contour around finger
I would like to extract a finger from an androidx.camera.view.PreviewView in Android java.
I am using an ImageAnalysis Object to run a analyze() function on an ExecutorService.
The analyze() has a ...
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How can a combination of a green object and a gray object be missed?
I'm writing a clicker that clicks on all falling green objects. He should not click on blue or gray objects. BUT, when there is a combination of green and gray, the program clicks on it, but I need to ...
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74
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How to extract all object from image
I need to extract all objects from image using OpenCV. Code works normal for images where objects locate separate from each other. But when objects are close to each other I have problems
Normal ...
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1
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126
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OpenCV C++ Tracking - How can I modify the search zone to track?
I'm working on an object tracking algorithm using CSRT and MOSSE algorithm tracker. My goal is to predict where the object will be when the algorithm has lost it. So I need to move the search box to ...
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How to recognize different symbols in a picture with overlapping using CV/ML?
l have a picture with some information about the milestone of each project. Each milestone is marked in the diagram with unique symbol. In the picture we have different trianlges or squares with ...
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error: 'Rect_' does not name a type, how to reimplement OpenCV's dnn::NMSBoxes?
I've been using OpenCV's cv::dnn::NMSBoxes() function within dnn module inside OpenCV's source code. Due to environment restrictions, I can't use OpenCV's functions so have to implement it manually ...
- 199
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32
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Recovering Pitch and Yaw from Game View
I am a fan of the game Sea of Thieves, and I thought it would be interesting to base some computer vision-based projects on it. There's a lot I can do in this problem space. My eventual goal might be ...
- 46
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Alternative to OpenCV blob detection
I am trying to detect some markers on an image. However, with the markers being white, the SimpleBlobDetector of OpenCV gets confused by any glare.
For example, in the attached image, I can only ...
- 262
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28
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TKinter based App for Vision system - Blank output
I have a Tkinter app for detecting the objects by importing images or videos from my system(using my custom model which predict fine when used via cmd predict function).
It works well, without any ...
3
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142
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contour/object detection in OpenCV
I have some experience of OpenCV, but really having problems detecting contours in the images below. I am able to detect some of the black circles shown, but these are dirt on the sensor, and I ...
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Is there any way to stop zooming in a recorded video which has a zooming effect?
I am currently working on a computer vision project related to cricket. My goal is to detect the ball, determine its position in each frame, and then plot the trajectory of the ball in a 3D view. ...
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116
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Python Mediapipe "nonetype object has no landmark attribute" error with camera
Hello I am using the code from here https://learnopencv.com/building-a-body-posture-analysis-system-using-mediapipe/ For posture detection when a person is sitting
If I use the sample input.mp4 that ...
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46
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Grid Image Recognition for Board Game
I want to create an automatic scoring app for a board game. The hard part of the app would be to turn this image into a data structure:
[
[
{ name: "granary" },
{ name: "opposite ...
- 49
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110
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Operate both cameras of stereo camera seperately using OpenCV
I have a stereocam, and I want both cameras to work separately, so that I can perform camera calibration and other techniques to implement stereo vision. Code of displaying it is basic OpenCV ,if ...
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43
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Returning the landing location of an object tracked using openCV from an irregular shaped region
I am using OpenCV to determine the landing location of an object using a camera from a top-down position. I have already gotten the code for the object tracking to work so that it not a problem. The ...
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