Feb 25, 2013 · I have an image and I want to extract a region from it. I have coordinates of left upper corner and right lower corner of this region. In gray scale I do it like this: I = cv2.imread("lena.png") I...

Aug 26, 2024 · By defining the coordinates of the regions of interest and applying slicing, you can easily extract the desired regions from an image. OpenCV provides a comprehensive set of functions and tools to work with images and perform region extraction efficiently.

Aug 31, 2019 · Welcome to the second post in this series where we talk about extracting regions of interest (ROI) from images using Opencv and Python. As a recap, in the first post of this series we went through the steps to extract balls and table edges from an image of a pool table.

Nov 24, 2019 · In this tutorial we will learn how to get and display a region of interest from an image, using Python and OpenCV. In some cases, it might make sense to only apply some type of operation only to a portion of an image.

Mar 15, 2013 · I am trying to get a region of an image (ROI) using opencv python. The version of opencv used is 2.4.3. However when I try to call the API cv2.SetImageROI it returns this error AttributeError: 'mo...

Nov 11, 2019 · I want to be able to select a region (say white or grey) and then for that particular region it should extract the image for the corresponding region. image = cv2.imread(im) . canny = auto_canny(image) image[(image< 50)] = 0. gray_mask = image[(image>= 50) & (image< 100)] = 100. white_mask = image[image> 110] = 255. if(white_mask):

Extracting a specific section of an image using OpenCV in Python involves several steps, including loading the image, defining a region of interest (ROI), and then extracting that ROI. I’ll provide you with a detailed explanation along with 10 code examples for various scenarios.

Oct 17, 2019 · In this post, we’ll be using OpenCV to apply OCR on the selected region of an image. By the end of this blog, you’ll be able to apply automated orientation correction on the input image, select...

Jul 13, 2021 · import cv2 import matplotlib.pyplot as plt def mark_region(image_path): #define the mark_region method FILENAME = r"C:\Users\mhiebing\Documents\GitHub_Repos\MonthlyStatsExtract\Page_1.jpg" # <--- change this to be the file you want image, line_items_coordinates = mark_region(FILENAME) plt.figure(figsize=(20,20)) plt.imshow(image) plt.savefig ...

Apr 4, 2021 · Reading Image as Color or GrayScale Image in Python using OpenCV; Extracting The Image RGB Values of a Pixel in Python Using OpenCV; Extracting the Image Region of Interest (ROI) in Python using OpenCV; Resizing the Image in Python using OpenCV; Rotate the Image in Python using OpenCV; Drawing a Rectangle on Image in Python using OpenCV