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Page 7277 of Mathematical Reviews Vol. , Issue 2004i [page]

2004 Mathematical Reviews  
raster images from grid picture grammars.  ...  In this paper, a method is given for constructing from a given grid picture grammar, the corresponding raster image language.  ... 

Procedural modeling of cities

Yoav I. H. Parish, Pascal Müller
2001 Proceedings of the 28th annual conference on Computer graphics and interactive techniques - SIGGRAPH '01  
From various image maps given as input, such as land-water boundaries and population density, our system generates a system of highways and streets, divides the land into lots, and creates the appropriate  ...  Modeling a city poses a number of problems to computer graphics.  ...  Figure 15 . 15 Left: The original facade picture partially overlaid with the grid structure, where blue frames and red grid cells are nested and random image layers, respectively.  ... 
doi:10.1145/383259.383292 dblp:conf/siggraph/ParishM01 fatcat:v2oe26sa7fbotaaabv4234vpcu

Procedural modeling of cities

Pascal Muller
2006 ACM SIGGRAPH 2006 Courses on - SIGGRAPH '06  
From various image maps given as input, such as land-water boundaries and population density, our system generates a system of highways and streets, divides the land into lots, and creates the appropriate  ...  Modeling a city poses a number of problems to computer graphics.  ...  Figure 15 . 15 Left: The original facade picture partially overlaid with the grid structure, where blue frames and red grid cells are nested and random image layers, respectively.  ... 
doi:10.1145/1185657.1185716 dblp:conf/siggraph/Muller06 fatcat:c7jtwcmminasnctmdrtuvoa4qe

The computer and eye processing pictures: The implementation of a raster graphics device

Marcel Adam Just, Patricia Carpenter
1979 Behavior Research Methods  
The display of the picture and the analysis of the eye fixations are described.  ...  We also have an alphanumeric grid to help in positioning pictures and a grid for calibrating the eye fixations.  ...  For example, some of the earlier discussions about "picture grammars" have not yielded general grammars for scenes that are more complex than block figures.  ... 
doi:10.3758/bf03205642 fatcat:ul6ugcjzdzh65g4eoedx6mdp2u

File Formats in Climate and Energy System Modelling [article]

Lukas Emele, Hannah Förster, Martin Glauer, Christian Hofmann, Ludwig Huelk, Mirjam Stappel, Christian Winger
2020 Zenodo  
Subsequently, we provide a description of specific commonly used formats from all categories. Whenever possible we reference an external resource for further explanation.  ...  We introduce binary and text based file formats, the difference between vector and raster formats, the classification of the structuredness in data, and the use of databases.  ...  Acknowledgements This work was supported by grant 03ET4057A-D (SzenarienDB) from the Federal Ministry for Economic Affairs and Energy of Germany (BMWi).  ... 
doi:10.5281/zenodo.3957444 fatcat:npiuhdart5cdxjgjjlzszbi3ni

Hierarchical Grouping — The Gestalt Assessments Method

Eckart Michaelsen, Michael Arens
2017 2017 IEEE International Conference on Computer Vision Workshops (ICCVW)  
This paper reports examples from the 2017 data set.  ...  Real images contain reflection symmetry and repetition in rows with high probability.  ...  The result is used to construct a 2*(n+1) grid point raster conform with the ground-truth format. 3.2.4 Heat-map The COCO part of the 2017 ICCV competition uses a raster-map of the 400x400 entries between  ... 
doi:10.1109/iccvw.2017.200 dblp:conf/iccvw/MichaelsenA17a fatcat:gbwnvwohzbgj5dhqjvoqryvoh4

A state of the art of urban reconstruction: street, street network, vegetation, urban feature [article]

Remi Cura, Julien Perret, Nicolas Paparoditis
2018 arXiv   pre-print
The main challenges seems to come from the complex nature of urban environment and from the limitations of the available data.  ...  Although reconstruction strategies vary widely, we can order them by the role the model plays, from data driven approach, to model-based approach, to inverse procedural modelling and model catalogue matching  ...  These data can be ordered from less structured (Lidar data, vector data) to more structured (image data, raster data), and from less abstract (Lidar data, image data) to more abstract (raster data, vector  ... 
arXiv:1803.04332v1 fatcat:vkvk655qg5chlcceswfo5p3mqa

Image Models

Narendra Ahuja, B. J. Schachter
1981 ACM Computing Surveys  
Models of spatial variation used m the computer processing of pictorial information are surveyed.  ...  Models of images depictmg homogeneous textures are reviewed under the categories of pixel-based and region-based models.  ...  In its basic form, a digital image is an array of picture elements (pixels), although image characteristics are often exploited to obtain concise representations.  ... 
doi:10.1145/356859.356861 fatcat:zrskkfne5vefpisckrb24kdn4y

Visualizing Digital Traces for Sustainable Urban Management: Mapping Tourism Activity on the Virtual Public Space

Francesc Valls, Josep Roca
2021 Sustainability  
Using Barcelona as a testbed, a methodology is presented to identify and visualize hot spots of visitor activity using more than a million public geotagged images collected from the Flickr photo-sharing  ...  of data from social media.  ...  The KDE results were computed in a grid with the same 25 × 25 m resolution as the rasterized maps and classified in quantiles for each of the resulting pixel values.  ... 
doi:10.3390/su13063159 fatcat:b3by7rgiqfhe5b3mi2bq7hgimm

Computer Graphics Education and the understanding of pixel plotting algorithms using Growth Aggregation models [article]

Jonathan Roberts
2010 Computer Graphics and Visual Computing  
In this paper we describe a constructionist approach to help students learn about fundamental computer graphics techniques.  ...  It is sometimes difficult to teach fundamental aspects of computer graphics, especially pixel plotting techniques, as some students fail to engage with the material.  ...  Background & Related Work Our second year computer graphics course includes four main areas of computer graphics: (1) graphics libraries, (2) rasterization, scan conversion, and pixel plotting algorithms  ... 
doi:10.2312/localchapterevents/tpcg/tpcg10/115-122 dblp:conf/tpcg/Roberts10 fatcat:v6nhcjuwmzdaffaaslxqf3bjcq

Themenheft zu Heft 5

(:Unkn) Unknown, Mediarep.Org, Jörg Schirra
2021 Image  
Most commonly, images are stored in pixel raster form.  ...  : Picture morphology as Grammar: L-Systems and Similar Formalizations Mereo-Geometrical Approaches to Picture Morphology Pixemes in Non-Photorealistic Computer Graphics Image Processing: Pixeme-based Approaches  ...  Mission Statement The e-journal IMAGE. Journal of Interdisciplinary Image Science is designed to be an internationally appraised multi-lingual journal for interdisciplinary image research.  ... 
doi:10.25969/mediarep/16743 fatcat:uh3wpotdmjgpjciazcj4cmbjie

Digital halftoning with space filling curves

Luiz Velho, Jonas de Miranda Gomes
1991 Proceedings of the 18th annual conference on Computer graphics and interactive techniques - SIGGRAPH '91  
If we consider the square grid defined by the pixels of a raster image it is possible to address uniquely all pixels using a simple approximating curve c~of a space filling curve.  ...  From top to bottom, clusters of 2, 6, 12,20,32,60 and 120 pixels. EXAMPLES Two different images were chosen as representatives of the common types of pictures in graphics applications.  ...  Figure 9 -A pen-and-ink drawing and the space filling curve dithering. effect obtained using image processing 90  ... 
doi:10.1145/122718.122727 dblp:conf/siggraph/VelhoG91 fatcat:luklc7soszatlgctuksgvyvave

Digital halftoning with space filling curves

Luiz Velho, Jonas de Miranda Gomes
1991 Computer graphics  
If we consider the square grid defined by the pixels of a raster image it is possible to address uniquely all pixels using a simple approximating curve c~of a space filling curve.  ...  From top to bottom, clusters of 2, 6, 12,20,32,60 and 120 pixels. EXAMPLES Two different images were chosen as representatives of the common types of pictures in graphics applications.  ...  Figure 9 -A pen-and-ink drawing and the space filling curve dithering. effect obtained using image processing 90  ... 
doi:10.1145/127719.122727 fatcat:t7fewumacbd5rgmujj5iwtu4l4

Modeling the Appearance and Behavior of Urban Spaces [article]

Carlos A. Vanegas, Daniel G. Aliaga, Peter Wonka, Pascal Müller, Paul Waddell, Benjamin Watson
2009 Eurographics State of the Art Reports  
In this state-of-the-art report, we seek to provide an overview of methods spanning computer graphics and related fields involved in this goal.  ...  ., Google Earth/Maps, Microsoft Visual Earth) has fomented a significant amount of research in computer graphics and in a number of applications in urban planning, emergency management, and visualization  ...  We also thank Eric Bruneton, Bernard Frisher, Aaron Hertzmann, Paul Merrell, Tan Ping, the Corbis database and Procedural Inc. for their images, and the anonymous reviewers for their valuable feedback.  ... 
doi:10.2312/egst.20091059 fatcat:bwlrkihernbxlgwcaiim4rxwpi

Hierarchical Grouping Using Gestalt Assessments

Eckart Michaelsen, Michael Arens
2017 2017 IEEE International Conference on Computer Vision Workshops (ICCVW)  
Starting from primitive objects extracted from the input image successively aggregates are constructed: reflection pairs, rows, etc., forming a part-of-hierarchy and rising in scale.  ...  The work in this paper starts from super-pixel primitives, and the grouping ends when the Gestalten almost fill the whole image.  ...  Obviously, the result should be some kind of parse-tree of a picture grammar.  ... 
doi:10.1109/iccvw.2017.199 dblp:conf/iccvw/MichaelsenA17 fatcat:cdv2ggiihnd53mcq26znfn7gce
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