Sensor Fusion for Precision Agriculture

Low-cost Lidar Camera System without GNSS
Precision agriculture has considerably benefited from the use of unmanned aerial vehicles, often combined with active ranging sensors like Lidar to gather information from underneath the crops, but existing systems are relatively expensive for the farming sector. In this project, researchers in Canada have used an integrated sensor orientation method for the local referencing of Lidar measurements. Their approach is based on loosely coupled, image-aided inertial navigation in which the pose of the camera replaces the GNSS measurements. The result is a low-cost solution that is useful for capturing topographic data of inaccessible areas as well as in GNSS-denied environments.... (read more)
2019-06-20 01:50:38

3D Target Launches New Version of Lidar Point Cloud Software

3D Target has announced the release of its SmartProcessing Lidar 1.2 software solution. SmartProcessing Lidar, fully developed by 3D Target, enables the production of high-quality georeferenced point clouds from the dataset surveyed with the popular Scanfly Lidar payload. Version features various brand new tools and several improvements. Among other minor bug fixes, the version introduces a Lidar boresight calibration tool, quality reports generation, faster colourization of the point-clouds and Pix4D 4.5 export. “With the new features included in the SPL 1.2, our customers can calibrate their systems by themselves!”, said Paolo Girardi, 3D Target’s CEO. “To the RGB camera... (read more)
2020-02-05 02:10:36

RapidEye Introduces Image Gallery

RapidEye has opened an image gallery on their website. The image gallery will feature high resolution satellite images taken from around the world by RapidEye's constellation of five spacecraft. RapidEye plans to update the image gallery regularly as new, exciting images become available.     "RapidEye's image gallery highlights a small sample of the images provided lately by our satellites and makes them accessible to everyone." comments Michael Prechtel, head of RapidEye's marketing and sales.   System commissioning and calibration activities are advancing. "Having obtained good images from each of the five cameras makes us confident that all cameras work... (read more)
2008-11-28 01:02:17

Compact Testing of EDM Instruments

Using Mirrors for Doubling and Tripling Laboratory Space
A new laboratory method for verifying the accuracy of distance measuring solves the problem of having to mount reflectors outside the laboratory. The limited space of the laboratory is duplicated and tripled by using mirrors. The method gives the same results as the standard method. Verification of EDM equipment involves the determination of instrument errors, then used to monitor instrument performance. Periodic calibration aims to minimise systematic error and determine the highest achievable precision. EDM instruments should be calibrated annually; frequency checks should be made semi-annually. There are two methods for calibrating EDM: the field method and the laboratory method.... (read more)
2005-03-21 12:00:00


Certification of Digital Airborne Mapping Products (2)
Digital airborne imaging has grown in importance over recent years. Large-format digital cameras can fully compete with analogue mapping cameras, and for some applications their performance is better. However, methods of calibration and certification used for analogue cameras are not individually transferable as they are based on laboratory calibration, while for digital cameras the entire data-generation process has to be considered. The author describes a new European initiative, EuroDAC2, aiming at a Europe-wide certification procedure for digital airborne mapping cameras. The new project on European Digital Airborne Camera (EuroDAC2) Certification is led by the European organisation for Spatial Data Research... (read more)
2007-08-11 12:00:00

Ismael Colomina

Dr Ismael Colomina is chief scientist at GeoNumerics, and holds over 30 years of experience in geomatics specialised in sensor orientation and calibration and trajectory determination. (read more)
2017-07-31 03:09:49

Erica Nocerino

Erica Nocerino holds a PhD in geomatics and is currently a researcher at 3DOM-FBK focusing on automated image processing and system calibration. (read more)
2017-09-07 12:03:00

DJI’s Metric Camera for Aerial Surveying

DJI has released the X4S camera, a lightweight version of the large aerial cameras carried in manned aircraft. How do aerial or metric cameras differ to a DSLR? An aerial mapping camera is primarily designed to have a low distortion metric lens and reliable construction to maintain its calibration. To achieve this the cameras have very few moving parts, particularly those that would affect the lens focal length. Aerial camera lenses are very high quality and virtually distortion free. This, and a constant lens focal length, means that every pixel is in the right place. 3D mapping from photogrammetry is based on... (read more)
2018-03-19 11:43:13

Jan Skaloud

Prof Jan Skaloud is an expert in sensor integration for navigation and mobile mapping. He teaches and researches at École Polytéchnique Fédéral de Lausanne (EPFL), Switzerland, on satellite positioning, inertial navigation, sensor calibration and photogrammetry. (read more)
2017-07-31 03:10:49

Stefania Amici

Stefania Amici, PhD, is with Istituto Nazionale di Geofisica e Vulcanologia (INGV), Rome, Italy. She focuses on multiple-scale remote sensing for hazard research. Prior to that, she worked on calibration of hyperspectral sensors for solar-system exploration at National Research Council (CNR) for almost seven years.  (read more)
2017-12-20 01:46:36
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