Results 1 to 10 of about 29,944 (115)

Spatial-Temporal Sub-Pixel Mapping Based on Swarm Intelligence Theory

open access: yesRemote Sensing, 2016
In the past decades, sub-pixel mapping algorithms have been extensively developed due to the large number of different applications. However, most of the sub-pixel mapping algorithms are based on single-temporal images, and the results are usually ...
Da He   +3 more
doaj   +3 more sources

Mapping Robusta coffee (Coffea canephora) cropping systems in Uganda: A two-step pixel and sub-pixel based approach with Sentinel-2 data. [PDF]

open access: yesPLoS ONE
Coffee is a highly valued commodity and a widely consumed beverage, playing an important role in global trade. However, coffee farming landscapes are increasing transitioning into smaller-scale agricultural setups.
Getachew Kebede   +8 more
doaj   +3 more sources

Sub-Pixel Mapping Model Based on Total Variation Regularization and Learned Spatial Dictionary

open access: yesRemote Sensing, 2021
In this research study, we deal with remote sensing data analysis over high dimensional space formed by hyperspectral images. This task is generally complex due to the large spectral, spatial richness, and mixed pixels.
Bouthayna Msellmi   +4 more
doaj   +3 more sources

Unsupervised Sub-Pixel Water Body Mapping with Sentinel-3 OLCI Image

open access: yesRemote Sensing, 2019
Mapping land surface water bodies from satellite images is superior to conventional in situ measurements. With the mission of long-term and high-frequency water quality monitoring, the launch of the Ocean and Land Colour Instrument (OLCI) onboard ...
Xia Wang   +4 more
doaj   +3 more sources

ADAPTIVE MULTI-OBJECTIVE SUB-PIXEL MAPPING FRAMEWORK BASED ON MEMETIC ALGORITHM FOR HYPERSPECTRAL REMOTE SENSING IMAGERY [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
Sub-pixel mapping technique can specify the location of each class within the pixels based on the assumption of spatial dependence. Traditional sub-pixel mapping algorithms only consider the spatial dependence at the pixel level.
Y. Zhong, L. Zhang
doaj   +1 more source

Mapping of ESA's Climate Change Initiative land cover data to plant functional types for use in the CLASSIC land model [PDF]

open access: yesBiogeosciences, 2023
Plant functional types (PFTs) are used to represent vegetation distribution in land surface models (LSMs). Previous studies have shown large differences in the geographical distribution of PFTs currently used in various LSMs, which may arise from the ...
L. Wang   +5 more
doaj   +1 more source

A COMPARISON OF SUB-PIXEL MAPPING METHODS FOR COASTAL AREAS [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
This paper presents the comparisons of three soft classification methods and three sub-pixel mapping methods for the classification of coastal areas at sub-pixel level.
Q. Liu, J. Trinder, I. Turner
doaj   +1 more source

Extraction of Color Information and Visualization of Color Differences between Digital Images through Pixel-by-Pixel Color-Difference Mapping

open access: yesHeritage, 2022
A novel method of extracting color information on a pixel-by-pixel basis or by the average of the regions of interest (ROIs) from digital images is proposed and demonstrated using newly developed and customized image-processing/analysis software (PicMan).
Woo Sik Yoo   +3 more
doaj   +1 more source

Generating continuous fine-scale land cover mapping by edge-guided maximum a posteriori based spatiotemporal sub-pixel mapping

open access: yesScience of Remote Sensing, 2022
Global land cover mapping activities are of great important for retrieving the environment we are living in. However, the trade-off between spatial and temporal resolution makes it difficult to obtain the continuous fine-scale land cover product for ...
Da He   +4 more
doaj   +1 more source

Bias of area counted from sub-pixel map: Origin and correction

open access: yesScience of Remote Sensing, 2022
With the increasingly widespread use of sub-pixel mapping techniques in land cover/use mapping, more accurate area information is often required for a specific land cover type in a particular study region. However, the bias of area counted from sub-pixel
Qi Dong   +9 more
doaj   +1 more source

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