Faramarz F Samavati
Biographic Data
| ID | 9510707 |
|---|---|
| NAME | Faramarz F Samavati |
| GIVEN NAMES | Faramarz F |
| FAMILY NAME | Samavati |
| SIGNATURE | SAMAVATI F F |
| AFFILIATIONS | University of Calgary |
| ORCID | 0000-0001-9440-7562 |
| VERIFIED | Yes |
| TOTAL WORKS | 10 |
| TOTAL CITATIONS | 0 |
| WORKS AS AUTHOR | 10 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2019 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 0 |
Spherical Geodesic Bounds and a k-Circle Coverage Formulation
In this article, we introduce analogues of classic Euclidean bounds, including spherical caps, geodesic axis-aligned bounding boxes (AABBs), geodesic oriented bounding boxes (OBBs), and geodesic k-discrete oriented polytopes (k-DOPs). We also formulate k-circle coverage, a union of variable-radius caps solved by a binary integer program over candidates generated from Discrete Global Grid System (DGGS)-based rasterization. As all constructions run…
Rethinking the commemoration of Indian Residential Schools through digital heritage
This paper examines the use of digital twins – highly accurate virtual models of physical structures created through terrestrial LiDAR scanning – to support the commemoration of heritage sites with difficult histories. In Canada, former Indian Residential School (IRS) buildings are increasingly at risk of loss due to their association with 160 years of government policies aimed at the forced assimilation and colonisation of Indigenous peoples. De…
Constructing Efficient Mesh-Based Global Grid Systems with Reduced Distortions
Recent advancements in geospatial technologies have significantly expanded the volume and diversity of geospatial data, unlocking new and innovative applications that require novel Geographic Information Systems (GIS). (Discrete) Global Grid Systems (DGGSs) have emerged as a promising solution to further enhance modern geospatial capabilities. Current DGGSs employ a simple, low-resolution polyhedral approximation of the Earth for efficient operat…
Perspective Charts in a Multi-Foci Globe-Based Visualization of Covid-19 Data
The use of perspective projection in data visualization has been shown to potentially aid with the perception of small values in datasets with important variations at multiple scales. We integrate perspective charts, which use perspective projection in their designs, into a geospatial visualization application for global COVID-19 data. We perform an evaluation through Amazon Mechanical Turk to evaluate the readability of these visualizations comp…
Efficient Calculation of Distance Transform on Discrete Global Grid Systems
Geospatial data analysis often requires the computing of a distance transform for a given vector feature. For instance, in wildfire management, it is helpful to find the distance of all points in an area from the wildfire’s boundary. Computing a distance transform on traditional Geographic Information Systems (GIS) is usually adopted from image processing methods, albeit prone to distortion resulting from flat maps. Discrete Global Grid Systems (…
Geospatial Physicalization in Geography Education
A novel method to create a physicalization of Digital Earth resulted a new type of analogue and tactile geographic information system (GIS). The model was tested by students in Australia, who shared insights into how the model supported their learning about the concept of “overlay” while providing an interesting and engaging learning platform. Observations suggest the model promoted collaborative learning, and provided a bridge between paper maps…
General Method for Extending Discrete Global Grid Systems to Three Dimensions
Geospatial sensors are generating increasing amounts of three-dimensional (3D) data. While Discrete Global Grid Systems (DGGS) are a useful tool for integrating geospatial data, they provide no native support for 3D data. Several different 3D global grids have been proposed; however, these approaches are not consistent with state-of-the-art DGGSs. In this paper, we propose a general method that can extend any DGGS to the third dimension to operat…
Disdyakis Triacontahedron DGGS
The amount of information collected about the Earth has become extremely large. With this information comes the demand for integration, processing, visualization and distribution of this data so that it can be leveraged to solve real-world problems. To address this issue, a carefully designed information structure is needed that stores all of the information about the Earth in a convenient format such that it can be easily used to solve a wide va…
Special Issue “Global Grid Systems”
This Special Issue is dedicated to research papers on topics related to global grid systems, from their geometric foundations to their cutting-edge applications [...]
Geospatial Data Organization Methods with Emphasis on Aperture-3 Hexagonal Discrete Global Grid Systems
Digital Earth frameworks deal with data sets of different types collected from various sources. To effectively store, retrieve, and transmit these data sets, efficient multi-scale data representations that are compatible with the underlying structure of the Digital Earth framework are required. In this article, we describe several such techniques and their properties: namely, how to represent data in the multi-scale cell hierarchy of a discrete g…
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Geospatial Data Organization Methods with Emphasis on Aperture-3 Hexagonal Discrete Global Grid Systems
Digital Earth frameworks deal with data sets of different types collected from various sources. To effectively store, retrieve, and transmit these data sets, efficient multi-scale data representations that are compatible with the underlying structure of the Digital Earth framework are required. In this article, we describe several such techniques and their properties: namely, how to represent data in the multi-scale cell hierarchy of a discrete g…
General Method for Extending Discrete Global Grid Systems to Three Dimensions
Geospatial sensors are generating increasing amounts of three-dimensional (3D) data. While Discrete Global Grid Systems (DGGS) are a useful tool for integrating geospatial data, they provide no native support for 3D data. Several different 3D global grids have been proposed; however, these approaches are not consistent with state-of-the-art DGGSs. In this paper, we propose a general method that can extend any DGGS to the third dimension to operat…
Disdyakis Triacontahedron DGGS
The amount of information collected about the Earth has become extremely large. With this information comes the demand for integration, processing, visualization and distribution of this data so that it can be leveraged to solve real-world problems. To address this issue, a carefully designed information structure is needed that stores all of the information about the Earth in a convenient format such that it can be easily used to solve a wide va…
Special Issue “Global Grid Systems”
This Special Issue is dedicated to research papers on topics related to global grid systems, from their geometric foundations to their cutting-edge applications [...]
Geospatial Physicalization in Geography Education
A novel method to create a physicalization of Digital Earth resulted a new type of analogue and tactile geographic information system (GIS). The model was tested by students in Australia, who shared insights into how the model supported their learning about the concept of “overlay” while providing an interesting and engaging learning platform. Observations suggest the model promoted collaborative learning, and provided a bridge between paper maps…
Perspective Charts in a Multi-Foci Globe-Based Visualization of Covid-19 Data
The use of perspective projection in data visualization has been shown to potentially aid with the perception of small values in datasets with important variations at multiple scales. We integrate perspective charts, which use perspective projection in their designs, into a geospatial visualization application for global COVID-19 data. We perform an evaluation through Amazon Mechanical Turk to evaluate the readability of these visualizations comp…
Efficient Calculation of Distance Transform on Discrete Global Grid Systems
Geospatial data analysis often requires the computing of a distance transform for a given vector feature. For instance, in wildfire management, it is helpful to find the distance of all points in an area from the wildfire’s boundary. Computing a distance transform on traditional Geographic Information Systems (GIS) is usually adopted from image processing methods, albeit prone to distortion resulting from flat maps. Discrete Global Grid Systems (…
Constructing Efficient Mesh-Based Global Grid Systems with Reduced Distortions
Recent advancements in geospatial technologies have significantly expanded the volume and diversity of geospatial data, unlocking new and innovative applications that require novel Geographic Information Systems (GIS). (Discrete) Global Grid Systems (DGGSs) have emerged as a promising solution to further enhance modern geospatial capabilities. Current DGGSs employ a simple, low-resolution polyhedral approximation of the Earth for efficient operat…
Spherical Geodesic Bounds and a k-Circle Coverage Formulation
In this article, we introduce analogues of classic Euclidean bounds, including spherical caps, geodesic axis-aligned bounding boxes (AABBs), geodesic oriented bounding boxes (OBBs), and geodesic k-discrete oriented polytopes (k-DOPs). We also formulate k-circle coverage, a union of variable-radius caps solved by a binary integer program over candidates generated from Discrete Global Grid System (DGGS)-based rasterization. As all constructions run…
Rethinking the commemoration of Indian Residential Schools through digital heritage
This paper examines the use of digital twins – highly accurate virtual models of physical structures created through terrestrial LiDAR scanning – to support the commemoration of heritage sites with difficult histories. In Canada, former Indian Residential School (IRS) buildings are increasingly at risk of loss due to their association with 160 years of government policies aimed at the forced assimilation and colonisation of Indigenous peoples. De…
Computer Science (7 works) · Mathematics (7 works) · Data Management and Algorithms (6 works) · Geography (6 works) · Geospatial analysis (6 works) · Grid (6 works) · Artificial Intelligence (5 works) · Algorithm (4 works) · Data mining (4 works) · Distributed computing (4 works)