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Abbas Rajabifard - One of the best experts on this subject based on the ideXlab platform.
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A Proposal for Streamlining 3D Digital Cadastral Data Lifecycle
'MDPI AG', 2021Co-Authors: Hamed Olfat, Davood Shojaei, Behnam Atazadeh, Farshad Badiee, Yiqun Chen, Abbas RajabifardAbstract:In urban areas, managing the lifecycle of land and property data related to interlocked and intertwined structures and infrastructure services is a grand challenge for Cadastral systems. Addressing the physical and legal complexities of vertically stratified ownership arrangements is a major step towards the modernization of Cadastral systems. The research problem that this study addresses is the lack of a simplified and effective approach for modelling, storing, visualizing, and querying 3D Cadastral data for multi-story buildings. This research primarily leads to the development of an approach based on Building Information Modelling (BIM), as well as state-of-the-art ETL (extract, transform, load), database and visualization technologies for 3D Cadastral data lifecycle management in current practices. The proposed steps for recording, preserving, and disseminating 3D Cadastral data are crucial in shifting current 2D Cadastral systems towards 3D digital information systems. The results showed improvements in data creation, storage, conversion, and communication when upgrading from a 2D to 3D digital cadastre. Therefore, this study confirmed that streamlining the lifecycle of Cadastral data using 3D environments would mitigate issues associated with the current fragmented 2D Cadastral datasets used in the multi-story developments
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a structured framework for 3d Cadastral data validation a case study for victoria australia
Land Use Policy, 2019Co-Authors: Ali Asghari, Mohsen Kalantari, Abbas RajabifardAbstract:There are a wide variety of Cadastral objects, ranging from simple 2D entities such as a land parcel, to complex 3D objects such as multistory/multi-owned buildings. The complex infrastructures development happening above and below the ground complicates the processes required for defining rights, restrictions and responsibilities in 3D (3D RRRs). Even in the current, predominantly, 3D analogue Cadastral system which relies on 2D drawings and representations, defining 3D RRRs is still a complicated task. With the widespread use of 3D geospatial information technologies, it is increasingly becoming easy to realise and interpret a 3D digital cadastre system. As part of the process of transition from the 2D representation of cadastre towards a 3D digital cadastre, not only will 2D representations be replaced with 3D models, but the examination workflow and its principles also need to be able to manage 3D models. Developing principles and validation rules is a critical requirement to guarantee that the diverse Cadastral data is trustable and contains enough detail to define the spatial and legal extents of ownership. This paper proposes a structured framework to define validation rules for 3D Cadastral models. The paper’s methodology utilises a case study approach where a plan examination process in Victoria, Australia has been analysed to investigate the principles of examining Cadastral plans, and further expanded on for validating 3D digital plans. The paper concludes with a discussion on the implications of the proposed 3D validation rules and proposes future research within the topic of 3D Cadastral data validation.
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geometrical data validation in 3d digital cadastre a case study for victoria australia
Land Use Policy, 2017Co-Authors: Davood Shojaei, Abbas Rajabifard, Mohsen Kalantari, Hamed Olfat, Sebastian Ignacio Quinones Faundez, Mark BriffaAbstract:Data ambiguity and invalidity can cause significant expensive issues in the Cadastral domain (e.g. legal disputes). An automated data validation can significantly help to reduce the potential issues. Quality assurance has been comprehensively investigated in various domains, however, the validation of 3D Cadastral data is still in its early development. The availability of various regular and irregular shapes for 3D Cadastral objects and modern building designs has resulted in a critical need for developing validation rules to ensure data validity and quality. The land registry in Victoria, Australia, is investigating the technical requirements for implementing a 3D digital cadastre. The study of 3D Cadastral data validation requirements has been part of this ongoing investigation. This study is being undertaken in three main phases including 1) developing geometrical validation rules, 2) developing non-geometrical validation rules, 3) implementing an online service to validate 3D Cadastral data. This paper aims to discuss the initial outcomes of the first phase of the aforementioned study which has focused on developing geometrical validation rules for 3D Cadastral objects. The paper reviews the development of four geometrical validation rules which have been formalised using mathematical expressions to check the individual 3D parcels and their relationships with adjoining or neighbouring parcels. The first validation rule checks the compatibility of the cancelled parcel against the created parcels. The second rule deals with parcel collision detection which is required for flagging unacceptable intersection of 3D objects. The third rule ensures the faces forming a 3D parcel are flat. The fourth validation rule assures 3D objects are watertight. The paper concludes with a discussion around the impacts of the proposed validation checks on the subdivision process and future research for the Victorian 3D digital cadastre.
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A roadmap to adopt the Land Administration Domain Model in Cadastral information systems
Land Use Policy, 2015Co-Authors: Mohsen Kalantari, Jill Urban-karr, Kenneth Dinsmore, Abbas RajabifardAbstract:With the introduction of the Land Administration Domain Model (LADM) as an International Standard (ISO 19152), land administration organisations worldwide are considering the adoption of this standard into their current processes and Cadastral information systems. Although LADM is a data standard, its adoption can have significant impacts on the process of managing Cadastral information. These impacts include the influence on existing institutions and their operations, the description of Cadastral information, the organisation of data in Cadastral databases and the knowledge and capacity of human resources utilising and managing Cadastral information. Therefore, the adoption of the LADM requires a holistic approach that considers the LADM not only as a data model for Cadastral information, but also as a cornerstone in systems of land administration. This paper aims to introduce a LADM implementation roadmap including important factors that can be used by land administration organisations when adopting the LADM. The paper methodology presents this roadmap using two case studies, the first in Victoria, Australia and the second in Belize, Central America. Using these case studies, this paper analyses the potential impact of the LADM adoption in a jurisdiction with an established Cadastral information system (CIS) and in a jurisdiction that is in the process of establishing a CIS. These factors include consideration of organisational motivation, institutional arrangements, information interpretation, information organisation, involvement in the LADM governance and capacity building.
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towards integration of 3d legal and physical objects in Cadastral data models
Land Use Policy, 2013Co-Authors: Ali Aien, Abbas Rajabifard, Mohsen Kalantari, Ian Williamson, Jude WallaceAbstract:Abstract Digital 3D cadastres are often envisaged as the visualisation of 3D property rights (legal objects) and to some extent, their physical counterparts (physical objects) such as buildings and utility networks on, above and under the surface. They facilitate registration and management of 3D properties and reduction of boundary disputes. They also enable a wide variety of applications that in turn identify detailed and integrated 3D legal and physical objects for property management and city space management (3D land use management). Efficient delivery and implementation of these applications require many elements to support a digital 3D cadastre, such as existing 3D property registration laws, appropriate 3D data acquisition methods, 3D spatial database management systems, and functional 3D visualisation platforms. In addition, an appropriate 3D Cadastral data model can also play a key role to ensure successful development of the 3D cadastre. A 3D Cadastral data model needs to reflect the complexity and interrelations of 3D legal objects and their physical counterparts. Many jurisdictions have defined their own Cadastral data models for legal purposes and have neglected the third dimension, integration of physical counterparts and semantic aspects. To address these problems, this paper aims to investigate why existing Cadastral data models do not facilitate effective representation and analysis of 3D data, integration of 3D legal objects with their physical counterparts, and semantics. Then, a 3D Cadastral data model (3DCDM) is proposed as a solution to improve the current Cadastral data models. The data model is developed based on the ISO standards. UML modelling language is used to specify the data model. The results of this research can be used by Cadastral data modellers to improve existing or develop new Cadastral data models to support the requirements of 3D cadastres.
Mohsen Kalantari - One of the best experts on this subject based on the ideXlab platform.
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a structured framework for 3d Cadastral data validation a case study for victoria australia
Land Use Policy, 2019Co-Authors: Ali Asghari, Mohsen Kalantari, Abbas RajabifardAbstract:There are a wide variety of Cadastral objects, ranging from simple 2D entities such as a land parcel, to complex 3D objects such as multistory/multi-owned buildings. The complex infrastructures development happening above and below the ground complicates the processes required for defining rights, restrictions and responsibilities in 3D (3D RRRs). Even in the current, predominantly, 3D analogue Cadastral system which relies on 2D drawings and representations, defining 3D RRRs is still a complicated task. With the widespread use of 3D geospatial information technologies, it is increasingly becoming easy to realise and interpret a 3D digital cadastre system. As part of the process of transition from the 2D representation of cadastre towards a 3D digital cadastre, not only will 2D representations be replaced with 3D models, but the examination workflow and its principles also need to be able to manage 3D models. Developing principles and validation rules is a critical requirement to guarantee that the diverse Cadastral data is trustable and contains enough detail to define the spatial and legal extents of ownership. This paper proposes a structured framework to define validation rules for 3D Cadastral models. The paper’s methodology utilises a case study approach where a plan examination process in Victoria, Australia has been analysed to investigate the principles of examining Cadastral plans, and further expanded on for validating 3D digital plans. The paper concludes with a discussion on the implications of the proposed 3D validation rules and proposes future research within the topic of 3D Cadastral data validation.
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geometrical data validation in 3d digital cadastre a case study for victoria australia
Land Use Policy, 2017Co-Authors: Davood Shojaei, Abbas Rajabifard, Mohsen Kalantari, Hamed Olfat, Sebastian Ignacio Quinones Faundez, Mark BriffaAbstract:Data ambiguity and invalidity can cause significant expensive issues in the Cadastral domain (e.g. legal disputes). An automated data validation can significantly help to reduce the potential issues. Quality assurance has been comprehensively investigated in various domains, however, the validation of 3D Cadastral data is still in its early development. The availability of various regular and irregular shapes for 3D Cadastral objects and modern building designs has resulted in a critical need for developing validation rules to ensure data validity and quality. The land registry in Victoria, Australia, is investigating the technical requirements for implementing a 3D digital cadastre. The study of 3D Cadastral data validation requirements has been part of this ongoing investigation. This study is being undertaken in three main phases including 1) developing geometrical validation rules, 2) developing non-geometrical validation rules, 3) implementing an online service to validate 3D Cadastral data. This paper aims to discuss the initial outcomes of the first phase of the aforementioned study which has focused on developing geometrical validation rules for 3D Cadastral objects. The paper reviews the development of four geometrical validation rules which have been formalised using mathematical expressions to check the individual 3D parcels and their relationships with adjoining or neighbouring parcels. The first validation rule checks the compatibility of the cancelled parcel against the created parcels. The second rule deals with parcel collision detection which is required for flagging unacceptable intersection of 3D objects. The third rule ensures the faces forming a 3D parcel are flat. The fourth validation rule assures 3D objects are watertight. The paper concludes with a discussion around the impacts of the proposed validation checks on the subdivision process and future research for the Victorian 3D digital cadastre.
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A roadmap to adopt the Land Administration Domain Model in Cadastral information systems
Land Use Policy, 2015Co-Authors: Mohsen Kalantari, Jill Urban-karr, Kenneth Dinsmore, Abbas RajabifardAbstract:With the introduction of the Land Administration Domain Model (LADM) as an International Standard (ISO 19152), land administration organisations worldwide are considering the adoption of this standard into their current processes and Cadastral information systems. Although LADM is a data standard, its adoption can have significant impacts on the process of managing Cadastral information. These impacts include the influence on existing institutions and their operations, the description of Cadastral information, the organisation of data in Cadastral databases and the knowledge and capacity of human resources utilising and managing Cadastral information. Therefore, the adoption of the LADM requires a holistic approach that considers the LADM not only as a data model for Cadastral information, but also as a cornerstone in systems of land administration. This paper aims to introduce a LADM implementation roadmap including important factors that can be used by land administration organisations when adopting the LADM. The paper methodology presents this roadmap using two case studies, the first in Victoria, Australia and the second in Belize, Central America. Using these case studies, this paper analyses the potential impact of the LADM adoption in a jurisdiction with an established Cadastral information system (CIS) and in a jurisdiction that is in the process of establishing a CIS. These factors include consideration of organisational motivation, institutional arrangements, information interpretation, information organisation, involvement in the LADM governance and capacity building.
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towards integration of 3d legal and physical objects in Cadastral data models
Land Use Policy, 2013Co-Authors: Ali Aien, Abbas Rajabifard, Mohsen Kalantari, Ian Williamson, Jude WallaceAbstract:Abstract Digital 3D cadastres are often envisaged as the visualisation of 3D property rights (legal objects) and to some extent, their physical counterparts (physical objects) such as buildings and utility networks on, above and under the surface. They facilitate registration and management of 3D properties and reduction of boundary disputes. They also enable a wide variety of applications that in turn identify detailed and integrated 3D legal and physical objects for property management and city space management (3D land use management). Efficient delivery and implementation of these applications require many elements to support a digital 3D cadastre, such as existing 3D property registration laws, appropriate 3D data acquisition methods, 3D spatial database management systems, and functional 3D visualisation platforms. In addition, an appropriate 3D Cadastral data model can also play a key role to ensure successful development of the 3D cadastre. A 3D Cadastral data model needs to reflect the complexity and interrelations of 3D legal objects and their physical counterparts. Many jurisdictions have defined their own Cadastral data models for legal purposes and have neglected the third dimension, integration of physical counterparts and semantic aspects. To address these problems, this paper aims to investigate why existing Cadastral data models do not facilitate effective representation and analysis of 3D data, integration of 3D legal objects with their physical counterparts, and semantics. Then, a 3D Cadastral data model (3DCDM) is proposed as a solution to improve the current Cadastral data models. The data model is developed based on the ISO standards. UML modelling language is used to specify the data model. The results of this research can be used by Cadastral data modellers to improve existing or develop new Cadastral data models to support the requirements of 3D cadastres.
G Vosselman - One of the best experts on this subject based on the ideXlab platform.
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interactive Cadastral boundary delineation from uav data
ISPRS Annals of the Photogrammetry Remote Sensing and Spatial Information Sciences, 2018Co-Authors: Sophie Crommelinck, M N Koeva, Michael Ying Yang, Bernhard Hofle, G VosselmanAbstract:Unmanned aerial vehicles (UAV) are evolving as an alternative tool to acquire land tenure data. UAVs can capture geospatial data at high quality and resolution in a cost-effective, transparent and flexible manner, from which visible land parcel boundaries, i.e., Cadastral boundaries are delineable. This delineation is to no extent automated, even though physical objects automatically retrievable through image analysis methods mark a large portion of Cadastral boundaries. This study proposes (i) a methodology that automatically extracts and processes candidate Cadastral boundary features from UAV data, and (ii) a procedure for a subsequent interactive delineation. Part (i) consists of two state-of-the-art computer vision methods, namely gPb contour detection and SLIC superpixels, as well as a classification part assigning costs to each outline according to local boundary knowledge. Part (ii) allows a user-guided delineation by calculating least-cost paths along previously extracted and weighted lines. The approach is tested on visible road outlines in two UAV datasets from Germany. Results show that all roads can be delineated comprehensively. Compared to manual delineation, the number of clicks per 100 m is reduced by up to 86 %, while obtaining a similar localization quality. The approach shows promising results to reduce the effort of manual delineation that is currently employed for indirect (Cadastral) surveying.
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contour detection for uav based Cadastral mapping
Remote Sensing, 2017Co-Authors: Sophie Crommelinck, Rohan Bennett, M Gerke, Michael Ying Yang, G VosselmanAbstract:Unmanned aerial vehicles (UAVs) provide a flexible and low-cost solution for the acquisition of high-resolution data. The potential of high-resolution UAV imagery to create and update Cadastral maps is being increasingly investigated. Existing procedures generally involve substantial fieldwork and many manual processes. Arguably, multiple parts of UAV-based Cadastral mapping workflows could be automated. Specifically, as many Cadastral boundaries coincide with visible boundaries, they could be extracted automatically using image analysis methods. This study investigates the transferability of gPb contour detection, a state-of-the-art computer vision method, to remotely sensed UAV images and UAV-based Cadastral mapping. Results show that the approach is transferable to UAV data and automated Cadastral mapping: object contours are comprehensively detected at completeness and correctness rates of up to 80%. The detection quality is optimal when the entire scene is covered with one orthoimage, due to the global optimization of gPb contour detection. However, a balance between high completeness and correctness is hard to achieve, so a combination with area-based segmentation and further object knowledge is proposed. The localization quality exhibits the usual dependency on ground resolution. The approach has the potential to accelerate the process of general boundary delineation during the creation and updating of Cadastral maps.
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review of automatic feature extraction from high resolution optical sensor data for uav based Cadastral mapping
Remote Sensing, 2016Co-Authors: Sophie Crommelinck, Rohan Bennett, M Gerke, Michael Ying Yang, Francesco Nex, G VosselmanAbstract:Unmanned Aerial Vehicles (UAVs) have emerged as a rapid, low-cost and flexible acquisition system that appears feasible for application in Cadastral mapping: high-resolution imagery, acquired using UAVs, enables a new approach for defining property boundaries. However, UAV-derived data are arguably not exploited to its full potential: based on UAV data, Cadastral boundaries are visually detected and manually digitized. A workflow that automatically extracts boundary features from UAV data could increase the pace of current mapping procedures. This review introduces a workflow considered applicable for automated boundary delineation from UAV data. This is done by reviewing approaches for feature extraction from various application fields and synthesizing these into a hypothetical generalized Cadastral workflow. The workflow consists of preprocessing, image segmentation, line extraction, contour generation and postprocessing. The review lists example methods per workflow step—including a description, trialed implementation, and a list of case studies applying individual methods. Furthermore, accuracy assessment methods are outlined. Advantages and drawbacks of each approach are discussed in terms of their applicability on UAV data. This review can serve as a basis for future work on the implementation of most suitable methods in a UAV-based Cadastral mapping workflow.
Polo Martín Bárbara - One of the best experts on this subject based on the ideXlab platform.
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Historia de la cartografía urbana de Burgos: siglos XIX-XX
'Edicions de la Universitat de Barcelona', 2020Co-Authors: Polo Martín BárbaraAbstract:[spa] A partir del siglo XIX existen en Burgos una serie de levantamientos cartográficos urbanos, derivados tanto de la demanda privada como de la pública, y concretamente de la Corona. Los productos resultantes de esta actividad fueron vistas panorámicas y una serie de planos urbanos a pequeña y gran escala, bien de sólo una parte de la ciudad o de la ciudad entera. Debido a sus propias características formales y técnicas, las vistas de ciudades configuran un subsistema específico y aislado que ha legado un conjunto de imágenes urbanas de gran difusión y estabilidad formal, pero con débiles conexiones con el resto de la cartografía urbana. Las otras tradiciones cartográficas, en cambio, pudieron imbricarse y enriquecerse mutuamente, hasta confluir en un nuevo patrón de representación urbana. La hipótesis central de esta tesis doctoral “Historia de la cartografía urbana de Burgos: siglos XIX y XX” es que la planimetría urbana desde finales del siglo XIX en Burgos y caracterizada por la alta precisión, la gran escala y la representación minuciosa del parcelario, la nivelación y las alineaciones, nace de la confluencia de tres modelos cartográficos concretos: la topografía militar urbana, la planimetría catastral y la cartografía urbanística. A día de hoy se han localizado 69 mapas elaborados por diferentes instituciones, que se pueden agrupar en tres bloques temáticos: los militares (1808-1898), los urbanísticos (1894-1956) y los catastrales (1908-1920). El bloque más numeroso es el de la cartografía militar, con un total de 53 mapas. A continuación, viene el bloque de la cartografía urbanística con 16 y de la cartografía catastral no hemos podido rescatar más que los aledaños al mapa realizado por el Instituto Geográfico Nacional en 1912, y que son únicamente las hojas de trabajo de campo. Se espera que la tesis “Historia de la cartografía urbana de Burgos. Siglos XIX y XX” actúe como pionera en el campo del análisis cartográfico urbano desde los puntos de vista geográficos e históricos en Castilla y león y genere el nacimiento de redes científico-sociales de diversa índole que contribuyan al conocimiento de nuestros recursos culturales y patrimoniales, eminentemente de naturaleza cartográfica, al facilitar el acceso a esta información de una forma cualificada e innovadora.[eng] From the 19th century, there are a series of urban cartographic surveys in Burgos, derived from both private and public demand, and specifically from the Crown. The products resulting from this activity were panoramic views and a series of small and large-scale urban plans, only of part of the city as well as the whole city. Due to their own formal and technical characteristics, city views form a specific and isolated subsystem that has left us with a set of urban images of great diffusion and formal stability, but with weak connections with the rest of the urban cartography. The other cartographic traditions, on the other hand, were able to overlap and enrich each other, until they came together in a new pattern of urban representation. The central hypothesis of this doctoral thesis “History of urban cartography of Burgos: 19th and 20th centuries” is that urban planimetry since the end of the 19th century in Burgos and characterized by high precision, large scale and detailed representation of the plot, leveling and alignments, is born from the confluence of three specific cartographic models: urban military topography, Cadastral planimetry and urban mapping. 69 maps prepared by different institutions have been located, which can be grouped into three thematic blocks: the military (1808-1898), the urban (1894- 1956) and the Cadastral (1908-1920). The most numerous block is that of military cartography, with a total of 53 maps. Next, comes the block of urban cartography with 16 and Cadastral cartography we have not been able to rescue more than those surrounding the map made by the National Geographic Institute in 1912, which are only the field worksheets. It is expected that the doctoral thesis “History of urban cartography of Burgos: 19th and 20th centuries” acts as a pioneer in the field of urban cartographic analysis from cartographic and geographical and historical points of view in Castille and León and generates the birth of scientific and social networks in different ways that contribute to the knowledge of our cultural and heritage resources, eminently of cartographic nature, by facilitating the access to this information in a qualified and innovative way
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Historia de la cartografía urbana de Burgos: siglos XIX-XX
'Edicions de la Universitat de Barcelona', 2020Co-Authors: Polo Martín BárbaraAbstract:A partir del siglo XIX existen en Burgos una serie de levantamientos cartográficos urbanos, derivados tanto de la demanda privada como de la pública, y concretamente de la Corona. Los productos resultantes de esta actividad fueron vistas panorámicas y una serie de planos urbanos a pequeña y gran escala, bien de sólo una parte de la ciudad o de la ciudad entera. Debido a sus propias características formales y técnicas, las vistas de ciudades configuran un subsistema específico y aislado que ha legado un conjunto de imágenes urbanas de gran difusión y estabilidad formal, pero con débiles conexiones con el resto de la cartografía urbana. Las otras tradiciones cartográficas, en cambio, pudieron imbricarse y enriquecerse mutuamente, hasta confluir en un nuevo patrón de representación urbana. La hipótesis central de esta tesis doctoral “Historia de la cartografía urbana de Burgos: siglos XIX y XX” es que la planimetría urbana desde finales del siglo XIX en Burgos y caracterizada por la alta precisión, la gran escala y la representación minuciosa del parcelario, la nivelación y las alineaciones, nace de la confluencia de tres modelos cartográficos concretos: la topografía militar urbana, la planimetría catastral y la cartografía urbanística. A día de hoy se han localizado 69 mapas elaborados por diferentes instituciones, que se pueden agrupar en tres bloques temáticos: los militares (1808-1898), los urbanísticos (1894-1956) y los catastrales (1908-1920). El bloque más numeroso es el de la cartografía militar, con un total de 53 mapas. A continuación, viene el bloque de la cartografía urbanística con 16 y de la cartografía catastral no hemos podido rescatar más que los aledaños al mapa realizado por el Instituto Geográfico Nacional en 1912, y que son únicamente las hojas de trabajo de campo. Se espera que la tesis “Historia de la cartografía urbana de Burgos. Siglos XIX y XX” actúe como pionera en el campo del análisis cartográfico urbano desde los puntos de vista geográficos e históricos en Castilla y león y genere el nacimiento de redes científico-sociales de diversa índole que contribuyan al conocimiento de nuestros recursos culturales y patrimoniales, eminentemente de naturaleza cartográfica, al facilitar el acceso a esta información de una forma cualificada e innovadora.From the 19th century, there are a series of urban cartographic surveys in Burgos, derived from both private and public demand, and specifically from the Crown. The products resulting from this activity were panoramic views and a series of small and large-scale urban plans, only of part of the city as well as the whole city. Due to their own formal and technical characteristics, city views form a specific and isolated subsystem that has left us with a set of urban images of great diffusion and formal stability, but with weak connections with the rest of the urban cartography. The other cartographic traditions, on the other hand, were able to overlap and enrich each other, until they came together in a new pattern of urban representation. The central hypothesis of this doctoral thesis “History of urban cartography of Burgos: 19th and 20th centuries” is that urban planimetry since the end of the 19th century in Burgos and characterized by high precision, large scale and detailed representation of the plot, leveling and alignments, is born from the confluence of three specific cartographic models: urban military topography, Cadastral planimetry and urban mapping. 69 maps prepared by different institutions have been located, which can be grouped into three thematic blocks: the military (1808-1898), the urban (1894- 1956) and the Cadastral (1908-1920). The most numerous block is that of military cartography, with a total of 53 maps. Next, comes the block of urban cartography with 16 and Cadastral cartography we have not been able to rescue more than those surrounding the map made by the National Geographic Institute in 1912, which are only the field worksheets. It is expected that the doctoral thesis “History of urban cartography of Burgos: 19th and 20th centuries” acts as a pioneer in the field of urban cartographic analysis from cartographic and geographical and historical points of view in Castille and León and generates the birth of scientific and social networks in different ways that contribute to the knowledge of our cultural and heritage resources, eminently of cartographic nature, by facilitating the access to this information in a qualified and innovative way
Davood Shojaei - One of the best experts on this subject based on the ideXlab platform.
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A Proposal for Streamlining 3D Digital Cadastral Data Lifecycle
'MDPI AG', 2021Co-Authors: Hamed Olfat, Davood Shojaei, Behnam Atazadeh, Farshad Badiee, Yiqun Chen, Abbas RajabifardAbstract:In urban areas, managing the lifecycle of land and property data related to interlocked and intertwined structures and infrastructure services is a grand challenge for Cadastral systems. Addressing the physical and legal complexities of vertically stratified ownership arrangements is a major step towards the modernization of Cadastral systems. The research problem that this study addresses is the lack of a simplified and effective approach for modelling, storing, visualizing, and querying 3D Cadastral data for multi-story buildings. This research primarily leads to the development of an approach based on Building Information Modelling (BIM), as well as state-of-the-art ETL (extract, transform, load), database and visualization technologies for 3D Cadastral data lifecycle management in current practices. The proposed steps for recording, preserving, and disseminating 3D Cadastral data are crucial in shifting current 2D Cadastral systems towards 3D digital information systems. The results showed improvements in data creation, storage, conversion, and communication when upgrading from a 2D to 3D digital cadastre. Therefore, this study confirmed that streamlining the lifecycle of Cadastral data using 3D environments would mitigate issues associated with the current fragmented 2D Cadastral datasets used in the multi-story developments
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geometrical data validation in 3d digital cadastre a case study for victoria australia
Land Use Policy, 2017Co-Authors: Davood Shojaei, Abbas Rajabifard, Mohsen Kalantari, Hamed Olfat, Sebastian Ignacio Quinones Faundez, Mark BriffaAbstract:Data ambiguity and invalidity can cause significant expensive issues in the Cadastral domain (e.g. legal disputes). An automated data validation can significantly help to reduce the potential issues. Quality assurance has been comprehensively investigated in various domains, however, the validation of 3D Cadastral data is still in its early development. The availability of various regular and irregular shapes for 3D Cadastral objects and modern building designs has resulted in a critical need for developing validation rules to ensure data validity and quality. The land registry in Victoria, Australia, is investigating the technical requirements for implementing a 3D digital cadastre. The study of 3D Cadastral data validation requirements has been part of this ongoing investigation. This study is being undertaken in three main phases including 1) developing geometrical validation rules, 2) developing non-geometrical validation rules, 3) implementing an online service to validate 3D Cadastral data. This paper aims to discuss the initial outcomes of the first phase of the aforementioned study which has focused on developing geometrical validation rules for 3D Cadastral objects. The paper reviews the development of four geometrical validation rules which have been formalised using mathematical expressions to check the individual 3D parcels and their relationships with adjoining or neighbouring parcels. The first validation rule checks the compatibility of the cancelled parcel against the created parcels. The second rule deals with parcel collision detection which is required for flagging unacceptable intersection of 3D objects. The third rule ensures the faces forming a 3D parcel are flat. The fourth validation rule assures 3D objects are watertight. The paper concludes with a discussion around the impacts of the proposed validation checks on the subdivision process and future research for the Victorian 3D digital cadastre.
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DEVELOPING AND TESTING A 3D Cadastral DATA MODEL A CASE STUDY IN AUSTRALIA
ISPRS Annals of Photogrammetry Remote Sensing and Spatial Information Sciences, 2012Co-Authors: Ali Aien, Abbas Rajabifard, Mahzad Kalantari, I. P. Williamson, Davood ShojaeiAbstract:Population growth, urbanization and industrialization place more pressure on land use with the need for increased space. To extend the use and functionality of the land, complex infrastructures are being built, both vertically and horizontally, layered and stacked. These three-dimensional (3D) developments affect the interests (Rights, Restrictions, and Responsibilities (RRRs)) attached to the underlying land. A 3D cadastre will assist in managing the effects of 3D development on a particular extent of land. There are many elements that contribute to developing a 3D cadastre, such as existing of 3D property legislations, 3D DBMS, 3D visualization. However, data modelling is one of the most important elements of a successful 3D cadastre. As architectural models of houses and high rise buildings help their users visualize the final product, 3D cadastre data model supports 3D cadastre users to understand the structure or behavior of the system and has a template that guides them to construct and implement the 3D cadastre. Many jurisdictions, organizations and software developers have built their own Cadastral data model. Land Administration Domain Model (DIS-ISO 19152, The Netherlands) and ePlan (Intergovernmental Committee on Surveying and Mapping, Australia) are examples of existing data models. The variation between these data models is the result of different attitudes towards cadastres. However, there is a basic common thread among them all. Current Cadastral data models use a 2D land-parcel concept and extend it to support 3D requirements. These data models cannot adequately manage and represent the spatial extent of 3D RRRs. Most of the current Cadastral data models have been influenced by a very broad understanding of 3D Cadastral concepts because better clarity in what needs to be represented and analysed in the cadastre needs to be established. This paper presents the first version of a 3D Cadastral Data Model (3DCDM_Version 1.0). 3DCDM models both the legal and physical extent of 3D properties and associated interests. The data model extends the traditional Cadastral requirements to cover other applications such as urban planning and land valuation and taxation. A demonstration of a test system on the proposed data model is also presented. The test is based on a case study in Victoria, Australia to evaluate the effectiveness of the data model
