Zobrazeno 1 - 10
of 41
pro vyhledávání: '"N. Börlin"'
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLIII-B2-2020, Pp 737-744 (2020)
One of the major quality control parameters in bundle adjustment are the posterior estimates of the covariance of the estimated parameters. Posterior covariance computations have been part of the open source Damped Bundle Adjustment Toolbox in Matlab
Externí odkaz:
https://doaj.org/article/c72186f524c54e7893461c9079554feb
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLII-2-W17, Pp 69-75 (2019)
The Damped Bundle Adjustment Toolbox (DBAT) is a free, open-source, toolbox for bundle adjustment. The purpose of DBAT is to provide an independent, open-source toolkit for statistically rigorous bundle adjustment computations. The capabilities inclu
Externí odkaz:
https://doaj.org/article/011448f1b5064648bb72e7b3fbb5d3c1
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLII-2, Pp 699-705 (2018)
An underwater imaging system with camera and lens behind a flat port does not behave as a standard pinhole camera with additional parameters. Indeed, whenever the entrance pupil of the lens is not in contact with the flat port, the standard photogram
Externí odkaz:
https://doaj.org/article/636a4fffc973404690e35a57d5969abf
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLII-2, Pp 133-140 (2018)
In this paper we investigate how the residuals in bundle adjustment can be split into a composition of simple functions. According to the chain rule, the Jacobian (linearisation) of the residual can be formed as a product of the Jacobians of the indi
Externí odkaz:
https://doaj.org/article/091e80401a314c8cad42327080f3cc9d
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLII-2-W8, Pp 171-177 (2017)
Photogrammetry has recently seen a rapid increase in many applications, thanks to developments in computing power and algorithms. Furthermore with the democratisation of UAVs (Unmanned Aerial Vehicles), close range photogrammetry has seen more and
Externí odkaz:
https://doaj.org/article/2c69f98c1c6f4fd98c730fa59b3ef85b
Autor:
N. Börlin, P. Grussenmeyer
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLI-B5, Pp 7-14 (2016)
The aim of this paper is to investigate whether the Matlab-based Damped Bundle Adjustment Toolbox (DBAT) can be used to provide independent verification of the BA computation of two popular software—PhotoModeler (PM) and PhotoScan (PS). For fra
Externí odkaz:
https://doaj.org/article/d44bd9bdd3cc4428b3f8e6eb2bdcd0f4
Autor:
N. Börlin, P. Grussenmeyer
Publikováno v:
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol II-5, Pp 89-96 (2014)
Camera calibration is one of the fundamental photogrammetric tasks. The standard procedure is to apply an iterative adjustment to measurements of known control points. The iterative adjustment needs initial values of internal and external parameters.
Externí odkaz:
https://doaj.org/article/691b0a9347074ccfbf6cd4774f515309
Autor:
N. Börlin, P. Grussenmeyer
Publikováno v:
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol II-5/W1, Pp 43-48 (2013)
According to the Waldhäusl and Ogleby (1994) "3 x 3 rules", a well-designed close-range architectural photogrammetric project should include a sketch of the project site with the approximate position and viewing direction of each image. This orienta
Externí odkaz:
https://doaj.org/article/5dfd032c684d428194849cdce52086c8
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXIX-B5, Pp 261-265 (2012)
The objective of this work was to create a method to measure stem attributes of standing trees on field plots in the forest using terrestrial photogrammetry. The primary attributes of interest are the position and the diameter at breast height (DBH)
Externí odkaz:
https://doaj.org/article/ea033f1eb96643f0ad7f5f39477a28a1
Publikováno v:
Annales Geophysicae, Vol 26, Pp 3491-3499 (2008)
We present a method, GALS (Gradient Analysis by Least Squares) for estimating the gradient of a physical field from multi-spacecraft observations. To obtain the best possible spatial resolution, the gradient is estimated in the frame of referen
Externí odkaz:
https://doaj.org/article/2f6b5f98b24040aab30279144fe7caee