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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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What are some of the commonly used image processing techniques of OpenCV for multiclass image classification?

I'm working on multiclass skin disease image classification(caused by bacteria and fungus). Some of the sample images are shown below. Images contain different background as shown in image_1 and ...
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Which is the best model for counting how many people are in an inside car image?

I'm new on AI... I've been given a mission of finding a model which detects how many people there are on a inside car/truck image. So far I worked only with YOLOv4 with OpenCV using yolov4 weights. ...
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Feature Extraction for printer classification

I need some advice. I am currently trying to do a printer classification with ML/DL. What do I have? 11 colored-images with high resolution from 8 different inkjet-printers (in total 88 images) I have ...
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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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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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In SIFT, how is the coordinate system being rotated?

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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2 votes
2 answers
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What is the minimum video resolution I need to identify anyone with 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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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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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 ...
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