scholarly journals Geometric Positioning for Satellite Imagery without Ground Control Points by Exploiting Repeated Observation

Sensors ◽  
2017 ◽  
Vol 17 (2) ◽  
pp. 240 ◽  
Author(s):  
Zhenling Ma ◽  
Xiaoliang Wu ◽  
Li Yan ◽  
Zhenliang Xu
Keyword(s):  
Satellite Imagery ◽  
Ground Control ◽  
Control Points ◽  
Ground Control Points ◽  
Repeated Observation

scholarly journals Geometric Accuracy Study of Orthorectification Based on Sensor Model Refinement in Imagery Subset Using ORFEO Toolbox (OTB)

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Andri Suprayogi ◽  
Nurhadi Bashit
Keyword(s):  
Remote Sensing ◽  
Satellite Imagery ◽  
Ground Control ◽  
Surface Model ◽  
Control Points ◽  
Geometric Accuracy ◽  
Model Refinement ◽  
Full Extent ◽  
Sensor Model ◽  
Ground Control Points

Large scale base map can be obtained by various methods, one of them is orthorectification process of remote sensing satellite imagery to eliminate the relief displacement caused by height variation of earth surface. To obtain a  map images with good quality,  it requires additional data such as sensor model in the form of rational polynomial coefficients (RPC), surface model data, and ground control points Satellite imageries with high resolution  file size are relatively large.  In order to process them,  high specification of hardwares were required. To overcome this by cutting only a portion of the images, based on certain study areas were suffer from of georeference lost so it would not be able to orthorectified. On the other hand,  in several remote sensing software such as ESA SNAP and Orfeo Toolbox (OTB)  subset or pixel extraction from satellite imagery,  preserve the imagery geometric sensor models. This research aimed at geometric accuracy of orthorectification carried out in a single scene of Pleiades Imagery within the Kepahiang Subdistrict, located at Kepahiang Regency, Bengkulu Province, by using DEMNAS and the imagery refined sensor mode, and ground control points taken using GPS Survey. Related with the raw imagery condition which consists of Panchromatic and multispectral bands, this study were separated to assembly, pan sharpening , and sensor model refinement stages prior to orthorectification carried out both in the original or full extent imagery and the result of subset extent imagery. After  these processses taken place, we measure the accuracy of each full and subset imagery.These procedures were carried out using Orfeo toolbox 6.6.0 in the Linux Mint 19 Operating system. From the process log, running time in total  were 7814.518  second for the full extent and 4321.95 seconds for the subset processess. And as a big data process, the total of full extent imageries was 83.15 GB  while the subset size  was  only 30.73 GB.  The relative accuracy of the full extent and its subset imagery were 0.431 meters. Accuracy of the  sensor model refinement process are  1.217 meters and 1.550 meters with GCP added, while the accuracu of  the orthorectifications results were  0.416 meters and 0.751 meters by using ICP.  Variation of execution time may caused by the data input size and complexity of the mathematical process carried out in each stages. Meanwhile,  the variation of accuracy may  caused by the check or control points placements above satellite Imagery which suffer from uncertainty when dealing with  the sub-pixel position or under 0.5 meters.

Verification of ZY-3 Satellite Imagery Geometric Accuracy Without Ground Control Points

2015 ◽  
Vol 12 (10) ◽  
pp. 2100-2104 ◽  
Author(s):  
Xinming Tang ◽  
Ping Zhou ◽  
Guo Zhang ◽  
Xia Wang ◽  
Yonghua Jiang ◽  
...  
Keyword(s):  
Satellite Imagery ◽  
Ground Control ◽  
Control Points ◽  
Geometric Accuracy ◽  
Ground Control Points

DEM generation using Ziyuan-3 mapping satellite imagery without ground control points

2018 ◽  
Vol 39 (19) ◽  
pp. 6213-6233 ◽  
Author(s):  
Ping Zhou ◽  
Xinming Tang ◽  
Li Guo ◽  
Xia Wang ◽  
Wenfeng Fan
Keyword(s):  
Satellite Imagery ◽  
Ground Control ◽  
Control Points ◽  
Ground Control Points

scholarly journals Correction of Pushbroom Satellite Imagery Interior Distortions Independent of Ground Control Points

2018 ◽  
Vol 10 (2) ◽  
pp. 98 ◽  
Author(s):  
Guo Zhang ◽  
Kai Xu ◽  
Qingjun Zhang ◽  
Deren Li
Keyword(s):  
Satellite Imagery ◽  
Ground Control ◽  
Control Points ◽  
Ground Control Points
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