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There is a general consent about the necessity of radiometric calibration of airborne scanner data to normalize for sensor, atmospheric, topographic and cross track effects. Less investigated are diurnal effects due to changing... more
There is a general consent about the necessity of radiometric calibration of airborne scanner data to normalize for sensor, atmospheric, topographic and cross track effects. Less investigated are diurnal effects due to changing illumination to stand structure geometries which are superimposing the before mentioned alterations. The presentation reports from a study conducted to quantify reflection changes for predefined view directions
Monitoring of ecosystems entails the evaluation of contributing factors by the expert ecologist. The aim of this study is to examine to what extent the quantitative variables, calculated solely by the spectral and textural information of... more
Monitoring of ecosystems entails the evaluation of contributing factors by the expert ecologist. The aim of this study is to examine to what extent the quantitative variables, calculated solely by the spectral and textural information of the space-borne image, may reproduce verified habitat maps. 555 spectral and texture attributes are extracted and calculated from the image. Results reached an overall accuracy of 65% per object, 76% per pixel, and 77% in reproducing the original objects with segmentation. Taking into consideration the large number of different habitats queried and the lack of any ancillary information the results suggest the discriminatory power of the finally selected attributes. Potential and limitations are discussed.
... However, the Sentinel-3 series will not be available until after the discontinuation of VEGETATION, as the scheduled launch date for the first of the two Sentinel-3s is at the end of 2013, with the second satellite following a year... more
... However, the Sentinel-3 series will not be available until after the discontinuation of VEGETATION, as the scheduled launch date for the first of the two Sentinel-3s is at the end of 2013, with the second satellite following a year later (ESA, 2011)[1]. As a result, there will be a gap ...
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ABSTRACT
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Precision farming requires information about the present status of the vegetation canopy. Remote sensing products can provide such information. The general investigation approach is based on the evaluation of remotely sensed data by the... more
Precision farming requires information about the present status of the vegetation canopy. Remote sensing products can provide such information. The general investigation approach is based on the evaluation of remotely sensed data by the inversion of physical backscatter models and coupled growth models. The presented paper describes the measurement strategy, developed for the establishment of a spectral database required for
There is a general consent about the necessity of radiometric calibration of airborne scanner data to normalize for sensor, atmospheric, topographic and cross track effects. Less investigated are diurnal effects due to changing... more
There is a general consent about the necessity of radiometric calibration of airborne scanner data to normalize for sensor, atmospheric, topographic and cross track effects. Less investigated are diurnal effects due to changing illumination to stand structure geometries which are superimposing the before mentioned alterations. The presentation reports from a study conducted to quantify reflection changes for predefined view directions
ABSTRACT
ABSTRACT Earth Observation (EO) images have been extensively used to provide a synoptic view of land cover/use (LC/LU) patterns and land cover/use changes. Land covers are not as clearly relatable to biodiversity in comparison to habitat... more
ABSTRACT Earth Observation (EO) images have been extensively used to provide a synoptic view of land cover/use (LC/LU) patterns and land cover/use changes. Land covers are not as clearly relatable to biodiversity in comparison to habitat classifications which can provide more scope for biodiversity monitoring. The main purpose of the paper is to provide an automatic general framework for translating LC maps (in LCCS taxonomy) into habitat maps (in GHC taxonomy) by means of VHR remote sensing data.
... However, the Sentinel-3 series will not be available until after the discontinuation of VEGETATION, as the scheduled launch date for the first of the two Sentinel-3s is at the end of 2013, with the second satellite following a year... more
... However, the Sentinel-3 series will not be available until after the discontinuation of VEGETATION, as the scheduled launch date for the first of the two Sentinel-3s is at the end of 2013, with the second satellite following a year later (ESA, 2011)[1]. As a result, there will be a gap ...
ABSTRACT Coastal areas of Western Crete face the big challenge of integrating biodiversity conservation objectives in land use planning. The lack of adequate operational methods and of sufficient information about human-environment... more
ABSTRACT Coastal areas of Western Crete face the big challenge of integrating biodiversity conservation objectives in land use planning. The lack of adequate operational methods and of sufficient information about human-environment interactions comprise the two major constrains, with which integrated conservation planning confronts. Based on the ELANEM procedure a new approach was developed by applying indices and indicators, structured according to environmental functions (naturalness, source of resources, sink for waste, service support), human-environment interaction (pressure, state, response) and environmental components (biodiversity, soil, water, land-use). 64 selected indices and indicators are estimated through remote sensing image analysis, existing document and database review, and enquiry of experts. Remote sensing images from the last three decades are selected to analyze and rapidly assess the multi-temporal and multi-scale dynamics of selected artificialization features, such as urban sprawl, land-use intensification and congestion of infrastructure and activities on the coasts, and of environmental features, such as habitat extent and quality, coastal erosion, and possible risks from natural and human-induced hazards. Object-oriented analysis with eCognition software supported the study of scale-effects of various land cover properties with multi-resolution segmentation. The outcome is a new approach comprising of historical land-use change assessment and of the development of a planning support tool using multitemporal remote sensing analysis, existing information, and expert knowledge.
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