Photogrammetry Using Large-format Sensors

SimActive is a Montreal, Canada-based software company founded in 2003. SimActive specialises in photogrammetry solutions for performing aerial triangulation (AT) and the generation of digital surface models (DSM), digital terrain models (DTM) and orthomosaics. Its Correlator3D software suite was originally developed for medium and large-format sensors, and later adapted for satellite and small-format UAV sensors. With an international distributor network and customers all over the world, SimActive continues to implement innovative solutions that cater to market demands. Figure 1, Part of a typical photogrammetry project composed of thousands of images.  The popularity of small and medium-format sensors is growing. Indeed,... (read more)
2013-10-28 02:29:00

Towards All-in-one Photogrammetry

A Case Study of Dense Image Matching Using Oblique Imagery
Modern photogrammetric camera architectures provide high-resolution imagery in nadir and oblique views. This case study sets out to prove the potential of oblique imagery to deliver dense point clouds to be used for DEM, 3D city model and true orthophoto generation – an important step towards ‘all-in-one’ photogrammetry. 3D point clouds for DEM or orthophoto production are typically collected using airborne Lidar systems. The recent development of dense image matching methods provides an efficient alternative by deriving point clouds from imagery. Within this fully automated image processing pipeline, corresponding pixels between multiple images are determined. Each pixel represents a sight... (read more)
2012-04-26 11:32:21

Fully Integrated Aerial Photogrammetry Solutions

Phase One
Phase One is headquartered in Copenhagen, Denmark, with offices in New York, London, Cologne, Tokyo, Hong Kong, Shanghai, Sydney and Tel Aviv. As a division of Phase One A/S, Phase One Industrial is dedicated to research, development and manufacturing of camera systems for aerial photogrammetry as well as integrated software solutions. Phase One is one of the world’s leaders in open-platform, high-end medium-format camera systems for professional photographers and advanced amateurs. Phase One also developed Capture One raw converter and workflow software, as well as the Phase One SDK, that provides a set of tools which enables users to build... (read more)
2013-10-28 12:07:18

Indoor Mapping with Terrestrial Photogrammetry

Swiss engineering and geomatics consulting firm Mosini Caviezel SA has been testing terrestrial photogrammetry for indoor mapping as a new method for establishing property plans. The company is evaluating the optimal indoor mapping workflow and testing different positions and methods for data capture. The project consisted of several phases and took place in an office building of Mosini Caviezel SA, Switzerland: a rural house that includes five rooms and a large hallway. The main objectives were to create an indoor plan in 2D, evaluate the application of terrestrial photogrammetry for establishing a PPE (Propriété Par Étages/property by floors, or condominium... (read more)
2017-02-06 09:01:58

UAS Photogrammetry and Railway Mapping

Pilot in Czech Republic Attains High-precision Results
Today’s photogrammetric software is able to create dense and precise digital surface models (DSMs), digital elevation models (DEMs) and orthoimages. But is the accuracy sufficient for highly demanding railway applications? A pilot project carried out in the Czech Republic demonstrates that unmanned aerial system (UAS) photogrammetry has great potential for collecting geodata meeting railway companies’ high standards of precision. Parallel computing based on 16 personal computers (PCs) was used to process the 11,000-plus images in a reasonable time span. Safeguarding the continuous operation of rail traffic entails maintenance of the rails, sleepers and gravel beds, design and construction of extension... (read more)
2017-03-29 09:47:47

Sparking New Markets for Photogrammetry

SmartTech, South Africa
SmartTech was established in 1996 in Cape Town, South Africa by the current president, Spencer Allen. The company is dedicated to the development of software for surveyors, photogrammetrists and related professions. Our goal is to provide practical, efficient and cost-effective solutions, from raw field-data to final product, electronic and/or hard copy. Prior to the official registration of SmartTech as a closed corporation in 1997, we recognised a definite need for survey-related tools which could bridge the gap between raw field-data and data analysis and design systems such as GIS and engineering design applications. Out of this need the uSMART mapping... (read more)
2005-05-12 12:00:00

Oblique Airborne Photogrammetry Maturing Rapidly

Oblique airborne photogrammetry is rapidly maturing and entering the workflow of service providers. Many applications embrace the advantages of airborne capture combined with slanted viewing geometry which comes close to human perception of scenes from ground level. GIM International brings you an overview of the properties of oblique airborne images, the most common configurations and applications. (By Markus Gerke, Yoeri Slagboom and George Vosselman, The Netherlands) Figure 1, Sources of occlusion. Today’s aerial surveys are often carried out using multiple small or medium-format cameras mounted together and simultaneously capturing nadir and oblique images. Oblique images capture the scene under a... (read more)
2014-02-17 10:23:24

Photogrammetry Meets the Consumer Drone

Photogrammetry has made huge progress over the past 15 years, on both hardware and software fronts. Dedicated large-frame cameras enable increasingly high geometric and radiometric precision, capturing overlapping images to be used by software with new, tailored algorithms. Large-scale surface models with proven accuracy and high detail are produced from these images by dense image matching software, a technique which has in many cases replaced the more traditional Lidar. Two pioneers in introducing 3D models from photogrammetry into the consumer sphere are Vexcel and Microsoft. Vexcel focused on finding the best sensor for large scale mapping and 3D modelling, while... (read more)
2016-12-08 10:12:59

UAS Photogrammetry for Mapping Mountains

Rapid 3D Mapping of Mount Erciyes, Central Turkey
High mountains are attractive places for outdoor sports. However, sometimes they change from recreational areas into hazardous ones. All year round, falling rocks and landslides endanger hikers and mountaineers and may cause casualties. To avoid mountaineers setting foot on tracks that are prone to landslides or where they may get crushed by rockfalls, high-quality maps of recent data are needed. In this article, the authors show that unmanned airborne systems have great potential for rapidly mapping mountainous areas. Hikers and mountaineers following mountain tracks may get injured by falling rocks or shifting slopes, and first responders may subsequently become victims... (read more)
2018-03-01 08:43:45

ALTA Photogrammetry Suite (APS) Version 7.1

Groupe Alta (Canada) is pleased to announce the release of version 7.1 of its professional Alta Photogrammetry Suite (APS). This software has been re-branded from its formally known DVP-GS since version 7.0. This updated version offers new and improved functionality that increases productivity.  Key features in this update include: -   On-the-fly contour and TIN using features within the view; -   Export to .asp (an XML based orientation file format) for compatibility with our ALTAVU free desktop viewer; -   Enhancement of multiple filter applications including better control for color balancing and other filters in Orthomosaics; -   Modifications for 2D snapping; -  ... (read more)
2008-06-12 10:07:48
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