Modeling Trees with Hypertextures
نویسندگان
چکیده
In the paper, a new method for modelling trees at medium detail is presented. The method is based on a volumetric representation of trees, generated by an iterated function system (IFS). Alleviating the modeling restrictions of fractal techniques, extensions to the standard IFS are introduced. Practical aspects of modeling and rendering of trees, such as data structures and bounding volumes, are discussed. The advantages of the new method are described at the end together with some results.
منابع مشابه
Chapter 4: Procedural Modeling and Animation of Gases and Fluids
This chapter describes modeling and animating procedural gases, liquids, and textures. Volume density functions are being used extensively in computer graphics for modeling and animating gases, fire, fur, liquids, and other ‘‘soft’’ objects. I have used them extensively for modeling and animating gases such as steam and fog [2, 5, 4, 3]. Hypertextures [16], metaballs [20](also called implicit s...
متن کاملDetermine the most suitable Allometric equations for Estimating Above-ground Biomass of the Juniperus excelsa
Today, modeling and determination of allometric equations of forest trees, especially Junipers trees, are very important for determination of biological status and carbon storage capacity of forest species. The aim of this study was to determine the most suitable allometric equations for estimating the biomass of leaf, sub branch, main branch, trunk, and biomass of total Juniperus excelsa tr...
متن کاملComparison of Ordinal Response Modeling Methods like Decision Trees, Ordinal Forest and L1 Penalized Continuation Ratio Regression in High Dimensional Data
Background: Response variables in most medical and health-related research have an ordinal nature. Conventional modeling methods assume predictor variables to be independent, and consider a large number of samples (n) compared to the number of covariates (p). Therefore, it is not possible to use conventional models for high dimensional genetic data in which p > n. The present study compared th...
متن کاملمدل سازی ریسک سقوط درختان چنار خطرآفرین در فضای سبز شهری
Trees in urban areas have survived in a wide variety of conditions and constrains, whether developing in natural or manmade habitats. Due to environmental constrains and stresses, urban trees rarely achieve their biological potentials. Indeed, some of trees, in small groups, could excel in terms of age, biomass structure and dimensions in urban areas. In definition, tree hazard includes entirel...
متن کاملAllometric equations for determining volume and biomass of Acer monspessulanum L. subsp. cinerascens multi-stemmed trees
Due to the importance of Acer monspessulanum in Iranian mountain forests, a study was carried out to reliably estimate its woody biomass and growing volume via allometric equations. Four transects, five trees in each were chosen randomly. The characteristics of standing trees including: diameter at root collar, height, number of stems and crown width were measured, then trees were finally cut d...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Comput. Graph. Forum
دوره 23 شماره
صفحات -
تاریخ انتشار 2004