نتایج جستجو برای: range photogrammetric networks

تعداد نتایج: 1072454  

Journal: :Remote Sensing 2015
Mariana B. Campos Antonio M. G. Tommaselli Ivana Ivánová Roland Billen

Photogrammetric documentation can provide a sound database for the needs of architectural heritage preservation. However, the major part of photogrammetric documentation production is not used for subsequent architectural heritage projects, due to lack of knowledge of photogrammetric documentation accuracy. In addition, there are only a few studies with rigorous analysis of the requirements for...

2008
Fengliang Xu Neil Woodhouse Zhizhong Xu David Marr Xinghe Yang Younian Wang

This paper introduced a new automatic terrain extraction (ATE) module inside ERDAS’s photogrammetric software LPS. This method uses a global DEM to initialize a surface model and iteratively refines it with image registration on different pyramid levels. Search range used in image registration is adaptively controlled by elevation range of matched feature points. However, mismatches and elevati...

2009
Devrim Akca Armin Gruen

This paper examines the potential of mobile phones to be used as front-end sensors for photogrammetric procedures and applications. For this purpose, two mobile phone cameras (Sony Ericsson K750i and Nokia N93) were calibrated over an indoor 3D testfield, using a self-calibrating bundle adjustment. Geometric accuracy tests were carried out in order to evaluate their metric performances and to c...

2001
A. STEWART WALKER SCOTT B. MILLER San Diego

Geographic information generated by photogrammetry is originating from a growing range of sensors. Both LIDAR and IFSAR systems and the recently introduced digital airborne sensors will be particularly significant. Organizations producing such information encounter increasing competitive pressure as commerce becomes more global. Productivity is the universal key. Modern requirements for photogr...

2003
N. Cornille D. Garcia M. A. Sutton S. McNeill J. J. Orteu M. Devy

The goal of this work is to develop the methodology for obtaining accurate, threedimensional measurements of object deformation using a scanning electron microscope. Calibration methods are being developed for the SEM that include novel distortion correction approaches. The 3D reconstruction of the specimen surface is computed using multiple views acquired through motion of the SEM specimen’s s...

2014
Francesco Nex Fabio Remondino F. Nex

Unmanned Aerial Vehicle (UAV) platforms are nowadays a valuable source of data for inspection, surveillance, mapping and 3D modeling issues. As UAVs can be considered as a lowcost alternative to the classical manned aerial photogrammetry, new applications in the shortand close-range domain are introduced. Rotary or fixed wing UAVs, capable of performing the photogrammetric data acquisition with...

2004
S. Barnea V. Alchanatis H. Stern

The research suggests a system that automatically generates Digital Elevation Model (DEM) of a chicken filet. The DEM is generated by close range photogrammetry methods, using stereoscopic images of the chicken filet. A major problem of the photogrammetric process is the uniformity of the chicken filet’s color and texture, which makes it hard to find matching-points in the two stereo images. Th...

2014
Khairul Nizam Tahar Anuar Ahmad

The objective of this study was to investigate the capabilities of low-cost digital cameras in volume determination. Low-cost digital cameras are capable of many applications including aerial photogrammetry and close-range photogrammetry. Low-cost digital cameras have the potential to be used in landslide monitoring and mapping. In this study, a low-cost digital camera was used as a tool to acq...

2003
Cliff Kottman Louis Hecht

The achievement of interoperability in photogrammetry is a difficult task. Today's photogrammetric services and servers tend to be tightly linked to proprietary environments, supported by heterogeneous platforms, distributed across networks not designed for shared image-related processes, and often are specific to one family of sensors. Interoperability, on the other hand, demands immediate acc...

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