Results 21 to 30 of about 291,479 (260)

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, Xiufang Fan
doaj   +1 more source

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
Li Binbin, Xie Huan, Tong Xiaohua, Cai Yinqiao, Zhang Zhijie   +4 more
doaj   +1 more source

KEY TECHNOLOGIES FOR 1:10,000 RAPID MAPPING BASED ON GF-7 SATELLITE [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
In order to solve the problems of low efficiency, high cost and long cycle of the traditional 1:10000 basic geographic information data production method (aerial photography combined with field mapping), this paper proposes a 1:10000 rapid mapping method
J. W. Liu, J. J. Liu, B. L. Zhao, X. He, S. Q. Zhao, C. C. Wu   +5 more
doaj   +1 more source

Batch extraction method of building height based on GF-7 satellite images

, 2023
Abstract Building information extraction is an important work content of digital city construction, and the extraction of building height information is important for applications such as urban and rural construction, geographic information update, urban change monitoring, urban cluster development planning, urban 3D modeling, and smart city ...
YAO Yukai, GUO Baoyun, SUN Na, SUN Xiaokai, WANG Yue, LI Cailin   +5 more
openaire   +2 more sources

Extraction of Pig Farms From GaoFen Satellite Images Based on Deep Learning

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
Accurate information on the spatial distribution and area of pig farms is essential for pig breeding monitoring, pork production estimation, and environmental governance of pig breeding. Governmental regulatory departments mostly rely on field surveys to
Jielin Guan, Le Li, Zurui Ao, Kefei Zhao, Yaozhong Pan, Weifeng Ma   +5 more
doaj   +1 more source

OVERVIEW OF THE TERRESTRIAL ECOSYSTEM CARBON MONITORING SATELLITE LASER ALTIMETER [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
The Terrestrial Ecosystem Carbon Monitoring satellite will be the first satellite of China with multi-beams laser altimeter and repetition frequency equal to GLAS on the world first laser altimetry satellite ICESat, but smaller diameter than GLAS.
G. Li, X. Gao, F. Hu, A. Guo, Z. Liu, J. Chen, C. Liu, S. Nie, A. Fu   +8 more
doaj   +1 more source

Fusing China GF-5 Hyperspectral Data with GF-1, GF-2 and Sentinel-2A Multispectral Data: Which Methods Should Be Used? [PDF]

, 2020
The China GaoFen-5 (GF-5) satellite sensor, which was launched in 2018, collects hyperspectral data with 330 spectral bands, a 30 m spatial resolution, and 60 km swath width.
Qian Du, Gang Yang, Weiwei Sun, Kai Ren, Xiangchao Meng   +4 more
core   +1 more source

DMU-Net: A Dual-Stream Multi-Scale U-Net Network Using Multi-Dimensional Spatial Information for Urban Building Extraction

Sensors, 2023
Automatically extracting urban buildings from remote sensing images has essential application value, such as urban planning and management. Gaofen-7 (GF-7) provides multi-perspective and multispectral satellite images, which can obtain three-dimensional ...
Peihang Li, Zhenhui Sun, Guangyao Duan, Dongchuan Wang, Qingyan Meng, Yunxiao Sun   +5 more
doaj   +1 more source

Fusing MPEG-7 visual descriptors for image classification [PDF]

, 2005
This paper proposes three content-based image classification techniques based on fusing various low-level MPEG-7 visual descriptors. Fusion is necessary as descriptors would be otherwise incompatible and inappropriate to directly include e.g.
Eddie Cooke, Mailis, T, Evaggelos Spyrou, Yannis Avrithis, Avrithis, Yannis, Le Borgne, Hervé, Cooke, Eddie, Mailis, Theofilos, Borgne, HL, Cooke, E, Noel O’Connor, Hervé Le Borgne, O'Connor, N, O'Connor, Noel E., Spyrou, E, Spyrou, Evaggelos, Theofilos Mailis, Avrithis, Y, O\u27Connor, Noel E.   +18 more
core   +1 more source

Image fusion for dynamic contrast enhanced magnetic resonance imaging [PDF]

, 2004
Twellmann T, Saalbach A, Gerstung O, Leach MO, Nattkemper TW. Image fusion for dynamic contrast enhanced magnetic resonance imaging. Biomed Eng Online. 2004;3(1): 35.BACKGROUND: Multivariate imaging techniques such as dynamic contrast-enhanced magnetic ...
Nattkemper, Tim Wilhelm ; https://orcid.org/, Nattkemper Tim W, Saalbach, A, Olaf Gerstung, Gerstung, O., Leach, M.O., Twellmann Thorsten, Twellmann, Thorsten, Nattkemper, TW, Axel Saalbach, Tim W Nattkemper, Leach, Martin O, Gerstung Olaf, Twellmann, T Thorsten, Thorsten Twellmann, Gerstung, Olaf, Saalbach Axel, Saalbach, Axel, Leach Martin O, Gerstung, O, Nattkemper, T.W., Martin O Leach, Saalbach, A., Twellmann, T.   +23 more
core   +2 more sources