使用Python进行OpenCV图像处理实战

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"OpenCV with Python By Example" 这本书《OpenCV with Python By Example》是关于使用Python进行图像处理和计算机视觉的一本实践指南。作者通过实例深入浅出地介绍了OpenCV库在Python中的应用。OpenCV(Open Source Computer Vision Library)是一个开源的计算机视觉库,它包含了大量的图像处理和计算机视觉的算法,广泛应用于图像分析、识别、机器学习等领域。 在书中,读者将了解到如何在不同操作系统(如Windows、MacOS X和Linux Ubuntu)上安装OpenCV-Python。安装完成后,读者将学习如何读取、显示和保存图像。了解图像的基本操作是使用OpenCV的第一步,这包括理解不同的颜色空间,如RGB、灰度等,并能进行颜色空间之间的转换。 作者进一步讲解了图像的几何变换,如平移、旋转和缩放。这些变换是通过矩阵运算实现的,可以改变图像的位置、方向和大小。此外,书中还介绍了仿射变换和投影变换,这两种更复杂的变换允许对图像进行更自由的扭曲和映射。 项目中还涵盖了图像的变形(warping),这是通过创建一个映射矩阵来改变图像的形状,常用于纠正图像畸变或创建有趣的视觉效果。这些概念和技巧对于图像增强、图像稳定以及虚拟现实应用等都非常有用。 接下来,书中的第二部分讨论了边缘检测和图像滤波。2D卷积是图像滤波的基础,通过应用不同类型的核(kernel)可以实现模糊、锐化等效果。例如,高斯模糊可以减少图像噪声,而边缘检测算法如Canny、Sobel和Scharr则可以帮助识别图像中的边界。 书中提到了运动模糊的处理,这对于理解和恢复由物体运动或相机移动引起的模糊图像至关重要。在这些章节中,读者将深入到图像处理的内部机制,理解这些算法的工作原理。 《OpenCV with Python By Example》是一本非常适合初学者和有一定基础的开发者的学习资料,它通过实例教学,使读者能够快速掌握OpenCV的核心功能,并能够应用到实际项目中。无论是对图像处理感兴趣的业余爱好者,还是专业开发人员,都能从中受益匪浅。
2016-02-16 上传
原pdf书签不正常(非发行版pdf),2016.02.16本人对书签进行了修正。 Paperback: 296 pages Publisher: Packt Publishing - ebooks Account (September 2015) Language: English ISBN-10: 1785283936 ISBN-13: 978-1785283932 Build real-world computer vision applications and develop cool demos using OpenCV for Python About This Book Learn how to apply complex visual effects to images using geometric transformations and image filters Extract features from an image and use them to develop advanced applications Build algorithms to help you understand the image content and perform visual searches Who This Book Is For This book is intended for Python developers who are new to OpenCV and want to develop computer vision applications with OpenCV-Python. This book is also useful for generic software developers who want to deploy computer vision applications on the cloud. It would be helpful to have some familiarity with basic mathematical concepts such as vectors, matrices, and so on. What You Will Learn Apply geometric transformations to images, perform image filtering, and convert an image into a cartoon-like image Detect and track various body parts such as the face, nose, eyes, ears, and mouth Stitch multiple images of a scene together to create a panoramic image Make an object disappear from an image Identify different shapes, segment an image, and track an object in a live video Recognize an object in an image and build a visual search engine Reconstruct a 3D map from images Build an augmented reality application