An Interactive Approach to Analytical Relief Shading
Bibliographic Data
| ID | 14701989 |
|---|---|
| Authors | Bernhard Jenny (0000-0001-6101-6100, Institute of Cartography / Swiss Federal Institute of Technology (ETH) / ETH H¶nggerberg / CH-8093 Zurich / Switzerland, corresponding author) |
| Year | 2001 |
| Volume | 38 |
| Issue | 1-2 |
| Pages | 67-75 |
| Publication date | 2001-10-01 |
| Peer Reviewed | Yes |
| Open Access | No |
| Type | ARTICLE |
| Venue | Cartographica The International Journal for Geographic Information and Geovisualization (JOURNAL) |
| Journal identifiers | ISSN: 0317-7173 • E-ISSN: 1911-9925 |
| Publisher | University of Toronto Press Inc. (UTPress) (PUBLISHER) |
| DOI | 10.3138/f722-0825-3142-hw05 |
| OpenAlex | W1987624327 |
| Language | EN |
| Citations received | 8 |
The software currently available for analytical relief shading does not generally permit local adaptations of the light direction, the simulation of aerial perspective, and other necessary techniques developed for manual relief shading. To remedy this deficiency, a program for computer-assisted relief shading has been developed that allows users to locally adapt shading characteristics, permitting seamless interactive control over the entire process. The grey values of the image are determined by a combination of aspect-based shading for steep regions, diffuse reflection for lowlands, and a bright grey tone for flat areas. Furthermore, an algorithm for the simulation of aerial perspective is presented. Tests with the program have shown that, with minimal investment of time, the quality of analytically produced shaded relief can be improved significantly. Using the proposed techniques and software presented herein, experienced cartographers can transfer their manual relief-shading knowledge and experience to the digital realm. L'estompage est un moyen de visualisation du relief en cartographie qui peut atre produit de manire traditionnelle (dessin manuel) ou par des calculs informatiques. Les logiciels d'estompage existants actuellement ne permettent pas d'adaptations locales de direction de la lumire. La simulation de perspective arienne ou des modifications manuelles y sont galement impossibles. Pour combler ces lacunes, un programme d'estompage assist par ordinateur t dvelopp. Il permet l'utilisateur d'adapter localement les estompages gr¢ce un contr ́le interactif de l'intgralit du processus. Les valeurs de gris du relief y sont dfinies partir d'une combinaison de deux mthodes : l'estompage des pentes raides est calcul partir de l'orientation du relief, et l'estompage des surfaces plus planes est calcul partir de la rflexion diffuse de la lumire. Par ailleurs, un nouvel algorithme pour la simulation d'effets de perspective arienne t utilis afin d'amliorer ces estompages. Contrairement d'autres programmes du mame type, il s'est avr que les cartographes ayant une solide exprience manuelle des techniques d'estompage, peuvent ici facilement transfrer leurs connaissances au monde digital
Art · Computer graphics (images · Humanities · Operating system · Shading · 3D Modeling in Geospatial Applications · 3D Surveying and Cultural Heritage · Computer Graphics and Visualization Techniques · Computer Science · Software
Sky-View Factor as a Relief Visualization Technique
Comparison of Relief Shading Techniques Applied to Landforms
Generation Method for Shaded Relief Based on Conditional Generative Adversarial Nets
Scale- and Resolution-Adapted Shaded Relief Generation Using U-Net
Aerial perspective for shaded relief
Elevation models for reproducible evaluation of terrain representation
Perceptually Shaded Slope Maps for the Visualization of Digital Surface Models
Automated Reduction of Visual Complexity in Small-Scale Relief Shading
| Unique citing works | 8 |
|---|---|
| Citations per year | 0,5 |
| Citation span | 2010 - 2024 (15) |
| Citation velocity | recent |
| Highly cited | No |
| Citation types | Neutral: 8 |