模擬植物生長的寓教於樂系統

An Edutainment System of Plant Growth Simulation

黃勺菱(Shao-Ling Huang)

指導教授 ： 陳履恆

國立暨南國際大學/科技學院/資訊工程學系/碩士(2011年)

https://doi.org/10.6837/NCNU.2011.00308

摘要

由於近年體感遊戲Wii的成功問世，使人機介面的直覺與靈活的互動機制之重要性再次受到矚目。
同時，L-System以自我擴充的formal language形式來儲存植物的3D結構訊息，因此成為CG植物模擬生長與架構的領域中的主流手法。然而，若想直接運用L-System來操作植物，則使用者必須先具備那些複雜的L文法和植物學知識。
在本研究裡，我們開發了一套寓教於樂的系統，藉由整合L-system和Webcam的動作擷取為基礎，提供非專業人士具趣味性與互動性的方式來體驗與操作植物的即時生長。此外，更可藉由其他數位藝術，如情景設計與音樂等元素的加入，來提升使用者對於環境的認知。
在這份研究成果裡可以分為兩個階段。第一階段，是將OpenCv程序中取得動作擷取之結果，轉換為L-System植物生長參數。而這些訊息可被利用於第二階段來模擬植物生長並且即時合成動畫。藉由重複執行以上兩個階段，讓使用者以非常容易掌握使用的交互方式操控植物生長。

關鍵字

可調整型L-System ； 電腦圖學 ； 模型化 ； 參數化Lindenmayer系統 ； 動作擷取

並列摘要

As the success shown by the somatosensory game platform, Wii, the importance of an intuitive and flexible interactive mechanism to human machine interfaces has been highlighted again.
Meanwhile, because the L-system can store the 3D structural information of plants in the format of a self-extensible formal language, it has become a mainstream for simulating plant growth and structure in the field of computer graphics. However, directly using L-system to manipulate plants strongly requires users to have the pre-knowledge of those complicated L-grammar and botany.
In this paper, we developed an edutainment system, which provides nonprofessional users interesting and interactive experience of growing plants in real-time, based on an integration of L-system and the motion-capture technique of Webcam. In addition, the elements of digital arts, such as designed scenarios and music, are also adopted into our system to raise users’ understanding of eco awareness.
Our research approach can be divided into two stages. The first stage is transforming the motion-capture results, which are obtained from the OpenCv routines, into the plant growth parameters of L-system. These information is then utilized in the second stage to simulate plant’s growth and synthesize animations in real time. The above two stages will be repetitively executed for users to interactively control the growth of plants in a very user-friendly way.

並列關鍵字

Adjustable-based L-System ； Computer Graph ； Modeling ； Parametric Lindenmayer systems ； Motion capture

參考文獻

[1]http://sourceforge.net/projects/OpenCvlibrary/files/

[2]http://www.opencv.org.cn/index.php

[3]石凌霖, “An Adaptive L-System”, Master’s degree thesis, National Chi Nan University, Department of Computer Science and Information Engineering, 2004.

[4]李欣緯, “Photorealistic Images Synthesis of Computer Graphic Plants”, Master’s degree thesis, National Chi Nan University, Department of Computer Science and Information Engineering, 2006.

[5]黃俊育，“L-Grammar之文法產生器”, Master’s degree thesis, National Chi Nan University, Department of Computer Science and Information Engineering, 2005.