نتایج جستجو برای: optical remotely sensed images

تعداد نتایج: 528441  

2006
Mattias Magnusson

Magnusson, M. 2006. Evaluation of remote sensing techniques for estimation of forest variables at stand level. Doctor's dissertation. There is a continuous need for accurate forest description. Forest data at stand level is required in forestry planning, in particular when scheduling treatments within the next few years. Collection of forest data is typically acquired with subjective surveying ...

2008
Yichun Xie Zongyao Sha Mei Yu

Aims Mapping vegetation through remotely sensed images involves various considerations, processes and techniques. Increasing availability of remotely sensed images due to the rapid advancement of remote sensing technology expands the horizon of our choices of imagery sources. Various sources of imagery are known for their differences in spectral, spatial, radioactive and temporal characteristic...

Journal: :Computers & Geosciences 2009
Jianting Zhang Le Gruenwald Michael Gertz

Remotely sensed imagery has become increasingly important in several applications domains, such as environmental monitoring, change detection, fire risk mapping and land use, to name only a few. Several advanced image classification techniques have been developed to analyze such imagery and in particular to improve the accuracy of classifying images in the context of such applications. However,...

Journal: :IEEE Geoscience and Remote Sensing Letters 2022

Semantic segmentation of remotely sensed images plays an important role in land resource management, yield estimation, and economic assessment. U-Net, a deep encoder-decoder architecture, has been used frequently for image with high accuracy. In this Letter, we incorporate multi-scale features generated by different layers U-Net design skip connected asymmetric-convolution-based (MACU-Net), usi...

Journal: :Journal of Geographical Systems 2004
Jiancheng Luo Yee Leung Jiang Zheng Jiang-Hong Ma

An elliptical basis function (EBF) network is proposed in this study for the classification of remotely sensed images. Though similar in structure, the EBF network differs from the well-known radial basis function (RBF) network by incorporating full covariance matrices and uses the expectation-maximization (EM) algorithm to estimate the basis functions. Since remotely sensed data often take on ...

Journal: :The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences 2018

Journal: :Journal of the Japan society of photogrammetry and remote sensing 1995

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