Coarse-to-Fine Image Matching-Based Footprint Camera Calibration of the GF-7 Satellite [PDF]
Sensors, 2021 The GF-7 satellite is China’s first high-resolution stereo mapping satellite that reaches sub-meter resolution, equipped with new-type payloads, such as an area array footprint camera that can achieve synchronization acquisition of laser spots.
Ren Liu, Chaofeng Ren, Lirong Liu
exaly +7 more sources
Laser Spot Center Location Method for Chinese Spaceborne GF-7 Footprint Camera [PDF]
Sensors, 2020 The Gaofen-7 (GF-7) satellite is equipped with two area array sensor footprint cameras to capture the laser altimeter spot. In order to establish a direct correspondence between the laser data and the stereo image data, a new method is proposed to fit ...
Junfeng Xie, Yun Yang, Chaofeng Ren
exaly +7 more sources
Rigorous Sensor Model of Gaofen-7 Satellite Laser Altimeter Based on Coupled Footprint Camera
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023 The Gaofen-7 (GF-7) satellite system adds a footprint camera that shares the same optical path as its laser altimeter to ensure consistent spatial referencing between the laser footprint point and the obtained optical images.
Shaoning Li, Guo Zhang
exaly +4 more sources
In‐orbit geometric calibration approach and positioning accuracy analysis for the Gaofen‐7 laser footprint camera [PDF]
IET Image Processing, 2021 The Gaofen‐7 (GF‐7) satellite is China's first submeter high‐resolution optical stereo‐mapping satellite. The satellite is equipped with two area‐array laser footprint cameras to capture the laser spots emitted by laser altimeters. To accurately identify
Chaofeng Ren, Huihui Jiao
exaly +3 more sources
On-Orbit Geometric Calibration and Accuracy Validation for Laser Footprint Cameras of GF-7 Satellite
Remote Sensing, 2022 The Gaofen-7 (GF-7) satellite uses a two-beam laser altimetry system in which each beam is equipped with a laser footprint camera (LFC) to provide geometric processing of the laser footprint images that assist in optical image stereo mapping.
Li Guoyuan, Jiyi Chen, Tang Xinming
exaly +4 more sources
Research on the Control Point Extraction Method of Chinese Gaofen 7 Satellite Using Altimeter and Footprint Camera [PDF]
EPJ Web of Conferences, 2020 Satellite laser altimetry is one of the most advanced information acquisition technologies in Earth observation system. It can provide high-accuracy elevation information, however, due to the lack of detail intensity information, its planimetric accuracy
Xiaohua Tong, Huan Xie
exaly +3 more sources
Long-term visual localization in dynamic benthic environments: the SEALOC dataset, footprint-based ground truth, and visual place recognition benchmark [PDF]
Frontiers in Robotics and AILong-term visual localization has the potential to reduce cost and improve mapping quality in optical benthic monitoring with autonomous underwater vehicles Despite this potential, long-term visual localization in benthic environments remains ...
Martin Kvisvik Larsen, Oscar Pizarro
doaj +2 more sources
2D visual area coverage and path planning coupled with camera footprints
Control Engineering Practice, 2018 Unmanned Aerial Vehicles (UAVs) equipped with visual sensors are widely used in area coverage missions.
Sina Sharif Mansouri +2 more
exaly +3 more sources
Optimising Camera–ChArUco Geometry for Motion Compensation in Standing Equine CT: A CT-Motivated Benchtop Study [PDF]
SensorsStanding equine computed tomography (CT) acquisitions are susceptible to residual postural sway, which can introduce view-inconsistent motion and degrade image quality.
Cosimo Aliani +3 more
doaj +2 more sources