Essays about: "pixel-based classification"

Showing result 1 - 5 of 13 essays containing the words pixel-based classification.

1. 1. Mapping Fire Salamander (Salamandra salamandra) Habitat Suitability in Baden-Württemberg with Multi-Temporal Sentinel-1 and Sentinel-2 Imagery

   University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Author : Andreas Eriksson; [2022]
   Keywords : Geography; GIS; Habitat Suitability; Remote Sensing; Image Classification; Earth and Environmental Sciences;

   Abstract : Remote sensing image classification is used in land cover, forest type and tree species classifications but rarely considered for habitat suitability modelling of animal and plant species. It is instead common that land cover products derived from remote sensing data are used in these modelling problems, even though satellite imagery can provide more detailed information. READ MORE

3. 2. Joint use of Sentinel-1 and Sentinel-2 for land cover classification : a machine learning approach

   University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Author : Miguel Gumersindo Castro Gomez; [2017]
   Keywords : Random Forest; temporal series; Physical Geography and Ecosystem analysisoptical; GEM; land cover classification; SAR; Earth and Environmental Sciences;

   Abstract : Reliable information on land cover is required to assist and help in the decision-making process needed to face the environmental challenges society has to deal with due to climate change and other driving forces. Different methods can be used to gather this information but satellite earth observation techniques offer a suitable approach based on the coverage and type of data that are provided. READ MORE

4. 3. Automatic image-based road crack detection methods

   University essay from KTH/Geodesi och satellitpositionering

   Author : Liene Some; [2016]
   Keywords : Road cracks; Crack detection; Mobile mapping; Deep learning; CrackIT; Caffe;

   Abstract : Pavement crack detection is an important procedure in road maintenanceand traffic safety. Traditionally, the road inventory was performed by field inspection, now it is replaced by the evaluation of mobile mapping system images. The acquired images are still a significant source of temporal condition of thepavement surface. READ MORE

5. 4. Forest Change Mapping in Southwestern Madagascar using Landsat-5 TM Imagery, 1990 –2010

   University essay from Högskolan i Gävle/Samhällsbyggnad, GIS

   Author : Jeroen Grift; [2016]
   Keywords : Deforestation; pixel-based classification; object-based classification; landscape metrics; scaling structure;

   Abstract : The main goal of this study was to map and measure forest change in the southwestern part of Madagascar near the city of Toliara in the period 1990-2010. Recent studies show that forest change in Madagascar on a regional scale does not only deal with forest loss, but also with forest growth However, it is unclear how the study area is dealing with these patterns. READ MORE

6. 5. Urban Vegetation Mapping Using Remote Sensing Techniques : A Comparison of Methods

   University essay from Stockholms universitet/Institutionen för naturgeografi

   Author : Fredrik Palm; [2015]
   Keywords : Vegetation Mapping; Window Independent Contextual Segmentation WICS ; Supervised Classification; Object Based Image Analysis;

   Abstract : The aim of this study is to compare remote sensing methods in the context of a vegetation mapping of an urban environment. The methods used was (1) a traditional per-pixel based method; maximum likelihood supervised classification (ENVI), (2) a standard object based method; example based feature extraction (ENVI) and (3) a newly developed method; Window Independent Contextual Segmentation (WICS) (Choros Cognition). READ MORE