Questions tagged [opencv]

For theoretical questions that involve the OpenCV library. Note that asking about programming issues or about the software libraries is generally OFF-TOPIC here.

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Sound in opencv [closed]

I have written opencv code using python, the code is fueled with a deep learning model that detects hand gesture and extracts meaning "sign language" I was able to extract the meaning of the ...
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30 views

Which method can accurately detect circular/angular shapes? (attached example)

Is there a method to detect shapes like these accurately and efficiently? I have tried the OpenCv Haar Casacade Classifier which does not work well. These shapes should all be the same class object ...
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54 views

How to classify two very similar images using Deep Learning?

I am a newbie in Computer Vision. I have a scenario in which I have a stationary camera in a factory. I want to detect whether the technician is working on the machine or not. Images are like the ...
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28 views

Understanding SIFT descriptor calculation

I need to understand how SIFT calculates the descriptors for the keypoints. Intuitively, i understand that it takes each keypoint, calculates the gradients for each pixel in a neighborhood of the ...
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2answers
58 views

Minimum video quality for facial recognition

I am currently working on a small project where I am trying to automate some stuff at home. I am building a model capable of identifying my face with OpenCV. This will be a live feed. I am making the ...
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12 views

How can I improve the robustness of my Fire Detection algorithm in openCV?

I am working on a project to detect fire in CCTV or any other surveillance cameras. Up till now I have completed the following stages; Convert the RGB into HSV Sliced out the Value matrix from HSV ...
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16 views

Interpreting coordinates of the function from the image using Grid Lines

I have a very different kind of problem at hand. I have a function plotted on the grid lines as shown below Now, I need to get the x and y coordinates for this particular function at regular ...
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18 views

Drawing verticle lines on video frames in vehicle detection

I am working on an application of vehicle detection, the purpose is to check if road is congested or not. The solution that came to my mind is to detect the vehicles moving in each direction ...
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25 views

Reading Data from a Twilio Stream [closed]

I work for a video tutoring organisation that uses Twilio Video API to carry out the video class. I want to run the object detection and other computer vision models on the input stream. I am stuck at ...
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35 views

Find the distance between two objects from a 45 degree tilted camera images taken from a drone with a specific elevation from the ground

I have a project where i'm supposed to find the distance and the height of a specific object in an image taken by a drone using one camera. I have looked into perspective transformation/correction but ...
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42 views

Distinguishing between handwritten compound fraction and subtraction

I am working in a project named "Handwritten Math Evaluation". So what basically happens in this is that there are 11 classes of (0 - 9) and (+, -) each containing 50 clean handwritten ...
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3k views

Can I build a CNN for image classification tasks just with OpenCV? [closed]

I have practiced building CNNs for image classification with TensorFlow, which is a nice library with good documentation and tutorials. However, I found that TensorFlow is too complicated and ...