3D city models have become common geospatial data assets for cities that can be utilized in numerous fields, in tasks related to planning, visualization, and decision-making among others. We present a study of 3D city modeling focusing on the six largest cities in Finland. The study portrays a contradiction between the realized 3D city modeling projects and the expectations towards them: models...

In this paper we present the modeling and visualization of the cultural heritage area of Bamiyan, Afghanistan. The region is situated ca 200 km north-west of Kabul and it was one of the major Buddhist centres until the ninth century AD. The two standing Buddhas belonged to some of the most famous Buddhist monuments world-wide. In 2001 they were destroyed through an act of vandalism by the Taleb...

This paper develops an efficient, physically based shape manipulation technique. It defines a 3D model with profile curves, and uses spine curves generated from the profile curves to control the motion and global shape of 3D models. Profile and spine curves are changed into profile and spine wires by specifying proper material and geometric properties together with external forces. The underlyi...

This paper presents concepts to support authors illustrating their texts. Our approach incorporates contentand feature-based retrieval techniques in multimedia databases containing 2D images and 3D models. Moreover, we provide tools (i) to adapt the retrieval results to contextual requirements and (ii) to ease their integration into target documents. For 3D models the adaptation comprises aspec...

In computer vision we often estimate a 3D model of an object, and its uncertainty, up to an unknown scale factor. This unknown scale factor means that we cannot directly infer positions and lengths on the model, nor their uncertainties. In order to make quantitative distance measurements on this model, we must obtain the unknown scale factor. However, how we determine the scale factor will affe...

We present a technique for rendering animated 3D models in a Su-Muk painting style with user’s guide. First, a user can sketch directly over 3D models by varying ink and water values. And we simulate the behavior of ink-water directly on 3D model for consistent shade information over 3D models. After simulation, ink and water are spread over a 3D surface appropriately. Second, to achieve a real...

In recent years, with the improvement of computer processing power and the development of sophisticated visualisation software, the traditional static views of geological maps, cross-sections, and other analogue representations have been replaced by digital, three dimensional (3D) models. Building these 3D models involves the assembly of many previously isolated and disparate datasets into a si...

Texturing gives a new quality to a 3D model making it more similar to real object and more adequate for human perception and understanding. Recent progress in means for spatial data acquisition and in 3D reconstruction techniques creates a background for metric 3D models generation, which could be successfully used instead of a real object for purposes of various investigations dealing with geo...

Texture is an essential property of physical objects that affects aesthetics, usability, and functionality. However, designing and applying textures to 3D objects with existing tools remains difficult and time-consuming; it requires proficient 3D modeling skills. To address this, we investigated an auto-completion approach for efficient texture creation that automates the tedious, repetitive pr...

Files of 3D models are often large and time-consuming to download. Most 3D viewers need the entire file to display a 3D model even when the user is interested only in a part of or a low-resolution version of the model. Therefore, progressive coding of 3D models is desired. However, existing work studies either the progressive coding of the geometry only, or progressive coding of the texture onl...