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Raspberry Pi 3 Cookbook for Python Programmers - Third Edition
book

Raspberry Pi 3 Cookbook for Python Programmers - Third Edition

by Steven Lawrence Fernandes, Tim Cox
April 2018
Beginner content levelBeginner
552 pages
13h 58m
English
Packt Publishing
Content preview from Raspberry Pi 3 Cookbook for Python Programmers - Third Edition

How to do it...

  1. Create a new Python file and import the following packages:
# Scaling (Resizing) Images - Cubic, Area, Linear Interpolations 
# Interpolation is a method of estimating values between known data points  
# Import Computer Vision package - cv2 
import cv2 
# Import Numerical Python package - numpy as np 
import numpy as np 
  1. Read the image using the built-in imread function:
image = cv2.imread('image_3.jpg') 
  1. Display the original image using the built-in imshow function:
cv2.imshow("Original", image) 
  1. Wait until any key is pressed:
cv2.waitKey() 
  1. Adjust the image size based on the operator's command:
# cv2.resize(image, output image size, x scale, y scale, interpolation) 
  1. Adjust the image size using cubic interpolation: ...
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Publisher Resources

ISBN: 9781788629874Supplemental Content