Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Ernest E. Armstrong"'
Autor:
Jack Woods, Gustav Tolt, Daniel Karlsson, Ernest E. Armstrong, Hadi Esteki, Christina Grönwall, Joakim Rydell
Publikováno v:
Automatic Target Recognition XX; Acquisition, Tracking, Pointing, and Laser Systems Technologies XXIV; and Optical Pattern Recognition XXI.
Laser-based 3D sensors measure range with high accuracy and allow for detection of objects behind various type of occlusion, e.g., tree canopies. Range information is valuable for detection of small objects that are typically represented by 5-10 pixe
Publikováno v:
Laser Radar Technology and Applications XV.
The primary purpose of this research was to develop an effective means of creating a 3D terrain map image (point-cloud) in GPS denied regions from a sequence of co-bore sighted visible and 3D LIDAR images. Both the visible and 3D LADAR cameras were h
Publikováno v:
Laser Radar Technology and Applications XV.
In many laser radar systems the intensity value's strength is dependent on the reflectivity of the measured surface. High intensity values are necessary for accurate range measurements. When measuring a low-reflectivity surface the returning laser in
Publikováno v:
SPIE Proceedings.
As a part of the project agreement between the Swedish Defence Research Agency (FOI) and the United States of American's Air Force Research Laboratory (AFRL), a joint field trial was performed in Sweden during two weeks in January 2009. The main purp
Publikováno v:
IEEE transactions on image processing : a publication of the IEEE Signal Processing Society. 10(12)
A computationally efficient method for image registration is investigated that can achieve an improved performance over the traditional two-dimensional (2-D) cross-correlation-based techniques in the presence of both fixed-pattern and temporal noise.
Publikováno v:
Applied optics. 45(24)
A Cramer-Rao lower bound on the range accuracy obtainable by a Flash light detection and ranging (LADAR) system receiving a return from a single surface in the instantaneous field of view of each detector is developed and verified with experimental d
Publikováno v:
Applications of Digital Image Processing XXVII.
Registration of individual images remains a significant problem in the generation of accurate images collected using coherent imaging systems. An investigation of the performance of eight distinct image registration algorithms was conducted using dat
Publikováno v:
SPIE Proceedings.
A new image reconstruction algorithm is used to remove the effect of atmospheric turbulence on motion-compensated frame averaged data collected by a laser illuminated 2-D imaging system. The algorithm simultaneously computes a high resolution image a
Publikováno v:
SPIE Proceedings.
A Kalman filter is developed to estimate the temporal drift in the gain and the offset of detectors in focal-plane array sensors from scene data. The novelty of this approach is that the gain and the offset are modeled by random sequences (state vari
Publikováno v:
SPIE Proceedings.
It is well known that non-uniformity noise in focal-plane array (FPA) sensors, which is due to the pixel-to-pixel variation in the detectors' responses, can considerably degrade the quality of images since it results in a fixed pattern that is superi