推荐序五

3D Printing，proclaimed by some as a symbol for the third industrial revolution，has been a very hot topic in recent years. While there are literally over one thousand books about 3D printing that are currently available for sale on Amazon.com，what sets this book apart，I believe，is its comprehensiveness. It covers a broad range of topics from 3D printing principles，hardware，digitization/modeling，to practices. In particular，it emphasizes the software aspect of 3D printing，which is 3D digitalization and modeling. There is no 3D printer that can produce a 3D object without a digital 3D model. This software，i.e.，modeling，aspect is somehow overlooked by many 3D printing literatures. I am very happy to see a book that gives a comprehensive and balance treatment of all aspects involved in the 3D printing pipeline.

This book is well suited for both beginners and intermediate practitioners. Beginners can learn the basic principles of 3D printing involving both hardware and software. For intermediate practitioners，who already know the basics，this book provides an under-the-hood view of 3D printing hardware and modeling software. In this regard，this book is particularly useful for innovators who want to develop the next kill-app for 3D printing. The various modeling tools and optimization algorithms introduced in this book are the building blocks for 3D printing applications，such as 3D photography，which is used as the driving example.

The author of this book，Dr. Wu，is an expert in 3D modeling and its applications to 3D printing. The writing style is easy to follow，with many examples and references to related literatures. It is a joy for me to read this book. I highly recommend this book for anyone who is interested in learning 3D printing and applications.

Ruigang Yang
Professor，University of Kentucky

3D打印被称为是第四次工业革命的象征。它一直是近年来非常热门的话题。目前在Amazon.com有很多有关3D打印的书籍。本书的最大特点，我认为是它的全面性。它涵盖了3D打印的全部过程，从打印原理、硬件、数字化造型，到以3D照相为例子的实践，特别的是它对三维数字化建模软件的强调。三维数字模型是任何3D打印的源泉，没有数字模型的3D打印只能是缘木求鱼。3D打印硬件对建模软件的依赖性是被市面上很多3D打印书籍或多或少忽视的一个问题，我很高兴地看到本书对3D打印的整个流程给出了一个全面、平衡的阐述。

本书非常适合初学者和中级从业人员。初学者可以全面地学习3D打印的基本原理，其中包括硬件的和软件的。对于已了解基本知识的中级从业者，本书提供了对3D打印硬件和数字化建模软件的深入分析。在这方面，本书对开发应用程序的3D打印创新者特别有用。另外，本书对各种建模工具和优化算法进行了详细介绍和分析，这些是开发新的3D打印应用的必备知识。

本书的作者吴博士是在三维数字化建模及其在3D打印上应用的专家。他的文风深入浅出、通俗易懂。书中有很多示例并详细列出了大量相关参考文献。我强烈地向任何有兴趣学习3D打印及其应用的人士推荐本书。

杨睿刚
美国肯塔基大学终身教授