Ridge-valley lines on meshes via implicit surface fitting
نویسندگان
چکیده
منابع مشابه
Surface Fitting Using Implicit Algebraic Surface Patches
1 Introduction 2 Interpolation and least-squares approximation provide! efficient ways of generating Ck.continuous meshes of surface patches, necessary for the consLrucLion of accurate computer geometric models of solid physical objects [see for e.g. [8.7]. Two surfaces J(:I;, Y,z) = 0 and g(x, y, z) = 0 meet with Ck-continuity along a curve C if and only if there exists functions a:(x, Y, z) a...
متن کاملEnhancing Transparent Skin Surfaces with Ridge and Valley Lines
There are many applications that can benefit from the simultaneous display of multiple layers of data. The objective in these cases is to render the layered surfaces in a such way that the outer structures can be seen and seen through at the same time. This paper focuses on the particular application of radiation therapy treatment planning, in which physicians need to understand the three-dimen...
متن کاملSemi-sharp subdivision surface fitting based on feature lines approximation
This paper presents an algorithm for approximating arbitrary polygonal meshes with subdivision surfaces, with the objective of preserving the relevant features of the object while searching the coarsest possible control mesh. The main idea is to firstly extract the feature lines of the object, and secondly construct the subdivision surface over this network. Control points are created by approx...
متن کاملRidge And Valley Junctions Extraction
In this paper we propose a new junctions ridges and valleys detection method in images based on the difference of rotating Gaussian semi filters. The novelty of this approach resides in the mixing of ideas coming both from directional filters and DoG method. We obtain a new ridges/valleys junctions anisotropic DoG detector enabling very precise detection of ridge/valley junctions. Moreover, thi...
متن کاملOne Class Classification Using Implicit Polynomial Surface Fitting
When the number of objects in the training set is too small for the number of features used, most classification procedures cannot find good classification boundaries. In this paper, we introduce a new technique to solve the one class classification problem based on fitting an implicit polynomial surface to the point cloud of features to model the one class which we are trying to separate from ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: ACM Transactions on Graphics
سال: 2004
ISSN: 0730-0301,1557-7368
DOI: 10.1145/1015706.1015768