Software-aided measurement of geometrical fidelity for 3D printed objects

Visual perception of 3D printed translucent objects

In order to reproduce translucent objects by 3D printers employing fully transparent (or clear) material, modeling the human visual perception of translucency is crucial. In this preliminary study, a set of 256 texture-less samples was created by mixing white and clear materials using multi-jet 3D printing. The samples differ in both lateral light transport properties and transmittance. Two psy...

Presentation and Interaction of Virtual 3D Objects Without Geometrical Model

We discuss how to locate and manipulate the multi-viewpoint data set (MVDS) in virtual environment. Since MVDS has no geometric information in it, additional information, which links a virtual object represented by MVDS and geometry-based virtual space, should be attached to it. Without having that kind of information, no manipulation in virtual space is possible. Four types of link information...

Recognition of Simple 3D Geometrical Objects under Partial Occlusion

In this paper we present a novel procedure for contour-based recognition of partially occluded three-dimensional objects. In our approach we use images of real and rendered objects whose contours have been deformed by a restricted change of the viewpoint. The preparatory part consists of contour extraction, preprocessing, local structure analysis and feature extraction. Themain part deals with ...

Simulating the generation of 3D printed micro-objects

Measurement of 3D-line shaped objects

We present a software tool for the analysis of 3D-line shaped objects in a 3D grey valued image. We discuss the extraction of the object from the image, the measurement of its shape features and its display.