更新时间：2021-08-27 19:48:39
封面
Title Page
Copyright and Credits
OpenCV 3 Computer Vision with Python Cookbook
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Contributors
About the authors
About the reviewer
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Preface
Who this book is for
What this book covers
To get the most out of this book
Download the example code files
Download the color images
Conventions used
Sections
Getting ready
How to do it...
How it works...
There's more...
See also
Get in touch
Reviews
I/O and GUI
Introduction
Reading images from files
Simple image transformations—resizing and flipping
Saving images using lossy and lossless compression
Showing images in an OpenCV window
Working with UI elements such as buttons and trackbars in an OpenCV window
Drawing 2D primitives—markers lines ellipses rectangles and text
Handling user input from a keyboard
Making your app interactive through handling user input from a mouse
Capturing and showing frames from a camera
Playing frame stream from video
Obtaining a frame stream properties
Writing a frame stream into video
Jumping between frames in video files
Matrices Colors and Filters
Manipulating matrices-creating filling accessing elements and ROIs
Converting between different data types and scaling values
Non-image data persistence using NumPy
Manipulating image channels
Converting images from one color space to another
