树莓派Python与OpenCV：打造2015计算机视觉应用

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"《树莓派计算机视觉编程》是一本由Ashwin Pajankar编著的专业书籍，针对Raspberry Pi（树莓派）平台上的计算机视觉应用设计与开发进行了深入讲解。该书于2015年首次出版，由Packt Publishing发行，版权受法律保护，未经书面许可不得复制或传播。本书的核心内容围绕如何利用Python语言和OpenCV库在树莓派这种小型、低成本的单板电脑上构建自己的计算机视觉项目。Python以其简洁易读的语法和丰富的库支持，在数据处理和机器视觉领域被广泛使用，而OpenCV则是一个强大的开源计算机视觉库，提供了图像处理、特征检测、人脸识别等众多功能。读者将学习到如何通过Raspberry Pi获取图像数据，如何预处理和分析这些数据，以及如何实现基本的图像识别和物体追踪算法。书中可能包括如何设置硬件接口，如摄像头，配置软件环境，以及编写代码来实现如边缘检测、色彩分析、模板匹配等常见视觉任务。此外，作者还可能探讨了如何利用深度学习技术，如TensorFlow或Keras，来提升计算机视觉应用的性能，尤其是在资源受限的Raspberry Pi环境中。书中还强调了版权问题，确保读者在合法范围内使用相关技术和工具。尽管作者和出版社尽力保证信息的准确性，但读者应理解，书中提供的所有信息都是基于当时的最佳实践，可能存在随着时间推移而更新的技术变化。因此，读者在实际应用时可能需要根据最新版本的库和API进行调整。《Raspberry Pi Computer Vision Programming》是一本适合对计算机视觉感兴趣，尤其是对入门级树莓派开发者来说的实用指南，它不仅提供理论知识，还有丰富的实践项目和案例，帮助读者掌握在树莓派上进行计算机视觉开发的技能。"

Preface

[ vii ]

Conventions

In this book, you will nd a number of text styles that distinguish between different

kinds of information. Here are some examples of these styles and an explanation of

their meaning.

Code words in text, database table names, folder names, lenames, le extensions,

pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "

We are going to learn about the linspace() function now."

A block of code is set as follows:

import picamera

import time

with picamera.PiCamera() as cam:

cam.resolution=(1024,768)

cam.start_preview()

time.sleep(5)

cam.capture('/home/pi/book/output/still.jpg')

Any command-line input or output is written as follows:

>>> a**2

array([ 1, 9, 36, 81])

New terms and important words are shown in bold. Words that you see on the

screen, for example, in menus or dialog boxes, appear in the text like this: "Go to

Enable Boot to Desktop/Scratch | Desktop."

Warnings or important notes appear in a box like this.

Tips and tricks appear like this.

Reader feedback

Feedback from our readers is always welcome. Let us know what you think about

this book—what you liked or disliked. Reader feedback is important for us as it helps

us develop titles that you will really get the most out of.

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