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Sub-pixel mapping with point constraints [PDF]
Remote Sensing of Environment, 2020 Abstract Remote sensing images contain abundant land cover information. Due to the complex nature of land cover, however, mixed pixels exist widely in remote sensing images. Sub-pixel mapping (SPM) is a technique for predicting the spatial distribution of land cover classes within mixed pixels.
Qunming Wang +2 more
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Sub-pixel mapping based on sub-pixel to sub-pixel spatial attraction model
2011 IEEE International Geoscience and Remote Sensing Symposium, 2011In this paper, a new sub-pixel mapping algorithm is proposed based on sub-pixel/sub-pixel spatial attraction model (SSSAM). Different from the original sub-pixel/pixel spatial attraction model (SPSAM), the SSSAM considers the spatial distribution of each sub-pixel within neighbor pixels, when calculating the spatial attractions for sub-pixels within ...
Liguo Wang 0001 +2 more
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Sub-Pixel Mapping Based on a MAP Model With Multiple Shifted Hyperspectral Imagery
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2013 Sub-pixel mapping is technique used to obtain the spatial distribution of different classes at the sub-pixel scale by transforming fraction images to a classification map with a higher resolution. Traditional sub-pixel mapping algorithms only utilize a low-resolution image, the information of which is not enough to obtain a high-resolution land-cover ...
Xiong Xu +2 more
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CNN based sub-pixel mapping for hyperspectral images
Neurocomputing, 2018Abstract Sub-pixel mapping techniques predict the spatial distribution of endmember abundances which are estimated through spectral unmixing. The sub-pixel mapping and spectral unmixing approaches are mostly unsupervised, and both are generally treated as independent optimization problems.
Pattathal V Arun, Alok Porwal
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Sub-pixel mapping and sub-pixel sharpening using neural network predicted wavelet coefficients
Remote Sensing of Environment, 2004Sub-pixel mapping and sub-pixel sharpening are techniques for increasing the spatial resolution of sub-pixel image classifications. The proposed method makes use of wavelets and artificial neural networks. Wavelet multiresolution analysis facilitates the link between different resolution levels.
Koen Mertens +2 more
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Sub-pixel lake mapping in Tibetan plateau
IEEE International IEEE International IEEE International Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004, 2004Lakes are valuable watersystems, used for production of drinking water, for fisheries and recreation, and can be important indirect or proxy indicator of climatic change. An important aspect to consider is the coverage of lakes, both temporal and spatial, which remote sensing satellites can provide.
Hongen Zhang +3 more
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ACM SIGGRAPH 2013 Talks, 2013
The limited resolution of shadow maps (SM) may result in erroneous shadowing, yielding artificially jagged edges and temporally crawling shadows even using perspective optimization techniques. We introduce Sub-Pixel Shadow Maps (SPSM) for real-time shadow-mapping with sub-pixel precision.
Pascal Lecocq +3 more
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The limited resolution of shadow maps (SM) may result in erroneous shadowing, yielding artificially jagged edges and temporally crawling shadows even using perspective optimization techniques. We introduce Sub-Pixel Shadow Maps (SPSM) for real-time shadow-mapping with sub-pixel precision.
Pascal Lecocq +3 more
openaire +1 more source