Astronomy Python - Jupiter Planet - Cropping Red Gaint Spot

 In Astronomy, there will be often need to crop(cut) certain part of image. 

By using cropping technique, it becomes easy to highlight import part of the image, as shown in the below example,  Red Giant Spot is cropped and then shown in another window (top right).

Image credit -Nasa Jupiter

Below is the python code used. When code is executed original image appears and then selected the part of the image which you want to cut.

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import cv2

import numpy as np

  

# Read image

image = cv2.imread("E:\\astronomy_related\\image_crop\\jupiter.jpg")

  

# Select ROI

r = cv2.selectROI("select the area", image)

  

# Crop image

cropped_image = image[int(r[1]):int(r[1]+r[3]), 

                      int(r[0]):int(r[0]+r[2])]

  

# Display cropped image

cv2.imshow("Cropped image", cropped_image)

cv2.waitKey(0)

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Credits

code credit-

https://www.geeksforgeeks.org/python-opencv-selectroi-function/

Image Credit: NASA Jupiter

https://solarsystem.nasa.gov/news/1889/jupiter-resources/?page=0&per_page=40&order=created_at+desc&search=&tags=Jupiter%2CJupiter+Moons%2CJuno&category=324

By Staci L. Tiedeken, NASA’s Goddard Space Flight Center