Photorealistic Images Synthesis of Computer Graphic Plants

• Main Authors: Shin-Wei Lee, 李欣緯
• Other Authors: Lieu-Hen Chen
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/51570263330483250209

碩士 === 國立暨南國際大學 === 資訊管理學系 === 94 === Rendering photorealistic images of plants is always an important research issue in the field of computer graphics. To achieve this research goal both rendering technique and simulation of morphology should be considered. Although L-System is the most well-known method to simulate the growth of plants and construct the structure of plants by self-developing and grammars, it is still difficult to describe the interactions between plants and environment. Furthermore, it is very hard to parameterize the botanic properties of plants for representing plants in the format of L-grammar. Thus, we present a proto-type system in this paper, called as SimEco to synthesize photorealistic images of CG plants. The basic concepts of SimEco are to describe the hierarchical botanic structure of plants by adopting context-sensitive L-System. This system simplifies the complexity of L-grammar and simulates the interactions between plants and environment. Besides, we develop a physical rendering engine to manipulate L-System and present the photorealistic images of plants. We also develop a LEAF CAD tool and use 3D MAX to fetch the stem, leaf and flower models. Furthermore, we adopt Pre-computed Radiance Transfer technique [22] to improve the photo-realism of plants.