Gireesha Devara has Published 207 Articles

OpenCV Python Program to analyze an image using Histogram

Gireesha Devara

Gireesha Devara

Updated on 31-May-2023 15:18:14

A histogram is a graphical representation showing how the pixel intensities (ranging from 0 to 255) are distributed in an image. For a digital image histogram plots a graph between pixel intensity versus the number of pixels. The x-axis has intensity variations, and the y-axis indicates the number of pixels ... Read More

Negative transformation of an image using Python and OpenCV

Gireesha Devara

Gireesha Devara

Updated on 31-May-2023 15:14:42

An image with reversed brightness is referred a negative image, in which the light parts of the image appear dark and the darker parts appear lighter. The negative transformation of a colored image (RGB image) will be reversed, with red areas appearing cyan, greens appearing magenta, and blues appearing yellow. ... Read More

Get video duration using OpenCV Python

Gireesha Devara

Gireesha Devara

Updated on 31-May-2023 15:09:07

OpenCV is an Open Source Computer Vision Library in python. It provides numerous functions to perform various Image and video processing operations. The library uses the Numpy module to represent all the video frames and images as a ndarray type. It needs the numpy library, we need to make sure ... Read More

Draw a triangle with centroid using OpenCV

Gireesha Devara

Gireesha Devara

Updated on 31-May-2023 14:50:29

The centroid is also called the geometric center; it is defined as the center point of the object. Whereas the centroid of a triangle is defined as the point of intersection of all three medians of a triangle. Calculating the Centroid of a triangle: Let’s consider an ABC ... Read More

Drawing a cross on an image with OpenCV

Gireesha Devara

Gireesha Devara

Updated on 30-May-2023 17:28:00

OpenCV is an Open Source Computer Vision Library in python. It provides numerous functions to perform various Image and video processing operations. The library uses the Numpy module to represent all the video frames and images as a ndarray type. It needs the numpy library, we need to make sure ... Read More

Draw Multiple Rectangles in Image using OpenCV Python

Gireesha Devara

Gireesha Devara

Updated on 30-May-2023 16:31:22

OpenCV is an Open Source Computer Vision Library in python. It provides numerous functions to perform various Image and video processing operations. The library uses the Numpy module to represent all the video frames and images as a ndarray type. It needs the numpy library, we need to make sure ... Read More

Removing Black Background and Make Transparent using OpenCV Python

Gireesha Devara

Gireesha Devara

Updated on 30-May-2023 16:25:57

In digital images, Transparency is the functionality that supports transparent areas in an image or image layer. For image processing/image editing, background removing is allowing us to highlight the subject of the photo and create a transparent background to place the subject into various new designs and destinations. Certain image ... Read More

Draw a rectangular shape and extract objects using Python's OpenCV

Gireesha Devara

Gireesha Devara

Updated on 30-May-2023 16:21:35

OpenCV is an Open Source Computer Vision Library in python. It provides numerous functions to perform various Image and video processing operations. The library uses the Numpy module to represent all the video frames and images as a ndarray type. It needs the numpy library, we need to make sure ... Read More

Display date and time in videos using OpenCV Python

Gireesha Devara

Gireesha Devara

Updated on 30-May-2023 16:10:44

OpenCV is an Open Source Computer Vision Library in python. It provides numerous functions to perform various Image and video processing operations. The library uses the python Numpy module to represent all the video or image arrays as a ndarray type. It needs the numpy library, we need to make ... Read More

Click response on video output using Events in OpenCV and Python

Gireesha Devara

Gireesha Devara

Updated on 30-May-2023 16:06:44

OpenCV is an Open Source Computer Vision Library in python. It provides numerous functions to perform various Image or video processing operations. The library uses the python Numpy module to represent all the video or image arrays as a ndarray type. In this article, we will see click responses ... Read More

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