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OpenCV

334+ posts

Scale an Image using Python OpenCV

Last Updated: 11 February 2026

Image scaling, also known as resizing is used to change the size of an image while processing it. In computer vision, scaling is required to reduce processing cost, meet s...read more

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Computer Vision

Edge Detection with Blur using Python OpenCV

Last Updated: 11 February 2026

Edge detection identifies object boundaries by detecting sharp intensity changes in an image. When applied directly to real-time frames, it often produces noisy and overly...read more

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Computer Vision

Capturing Selfie with Python OpenCV

Last Updated: 04 February 2026

Capturing a selfie allows us to take images directly from a webcam and save them for further processing. This approach is widely used in computer vision applications that ...read more

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Masking in Python OpenCV

Last Updated: 13 February 2026

Masking is a technique used to extract specific colours or regions from an image or video. OpenCV performs masking using cv2.inRange() which selects pixels within a define...read more

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Final Fit of Logo in OpenCV

Last Updated: 13 February 2026

Final Fit of Logo means resizing and placing a logo so it stays clear and proportional when the frame size changes. It prevents blurring by adjusting the logo size and pos...read more

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Face Extraction in OpenCV

Last Updated: 13 February 2026

Face extraction involves detecting human faces in an image and saving them as separate image files. OpenCV provides Haar Cascade classifiers that can detect faces efficien...read more

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Warm and Cool Image Effects in OpenCV

Last Updated: 29 January 2026

Warm and cool tones are commonly used in image processing to enhance the visual mood of an image. A warm tone adds a yellowish shade making the image look brighter and ene...read more

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Histogram of Oriented Gradients

Last Updated: 23 July 2025

HOGis a feature descriptor used in computer vision and image processing for object detection. It captures the structure or the shape of an object by analyzing the distribu...read more

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Computer Vision

Computer Vision

AI-ML-DS With Python

Detecting ArUco markers with OpenCV and Python

Last Updated: 23 July 2024

ArUco markers are widely used in computer vision applications for tasks such as camera calibration, pose estimation, and augmented reality. These markers are square fiduci...read more

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Computer Vision

Data Science Blogathon 2024

Detecting bills by using OpenCV

Last Updated: 23 July 2025

In the field of computer vision and image processing, OpenCV (Open Source Computer Vision Library) is a powerful tool that enables a wide range of applications, from facia...read more

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Computer Vision

AI-ML-DS With Python

How to Fix: VideoCapture can't open camera by index in Python

Last Updated: 28 June 2024

Most computer vision programs or programs that include openCV codes require a camera to capture and process the videos or images. It may happen that we get different types...read more

Python How-to-fix

Image Processing — OpenCV Vs PIL

Last Updated: 23 July 2025

Both OpenCV and PIL have their strengths and are suited for different types of image processing tasks. OpenCV is the go-to choice for complex and performance-intensive app...read more

Step-by-Step Guide to Using RANSAC in OpenCV using Python

Last Updated: 28 June 2024

RANSAC (Random Sample Consensus) is an iterative method to estimate the parameters of a mathematical model from a set of observed data that contains outliers. In computer ...read more

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Smart Parking System using Python and OpenCV

Last Updated: 23 July 2025

To set up a parking lot camera for our project, Here we have used a downloaded video and converted it into an image. This setup allows us to simulate a real parking lot sc...read more

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Python: OpenCV findHomography Inputs

Last Updated: 23 July 2025

OpenCV, the popular open-source computer vision and machine learning library, offers a wide range of tools for image processing and computer vision tasks. One of the criti...read more

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