Results 251 to 260 of about 10,908 (283)
Some of the next articles are maybe not open access.
H.263 video transcoding for spatial resolution downscaling
Proceedings. International Conference on Information Technology: Coding and Computing, 2005In order to allow users to use handheld devices accessing video information, such as downloading and playing video files, there is a need to downscale the compressed video into lower spatial resolution and lower transmission bit rate. In this work, transcoding the compressed H.263 video into low spatial-resolution is discussed and realized.
Zhijun Lei, Nicolas D. Georganas
openaire +1 more source
Spatial downscaling of TRMM 3B43 precipitation considering spatial heterogeneity
International Journal of Remote Sensing, 2014The availability of accurate precipitation data with high spatial resolution is deemed necessary for many types of hydrological, meteorological, and environmental applications. The Tropical Rainfall Measuring Mission (TRMM) data sets can provide effective precipitation information, but at coarse resolution (0.25°), so it is very important to improve ...
Fengrui Chen, Yu Liu, Qiang Liu, Xi Li
openaire +1 more source
Downscaling the environmental associations and spatial patterns of species richness
Ecological Applications, 2014We introduce a method that enables the estimation of species richness–environment association and prediction of geographic patterns of species richness at grains finer than the original grain of observation. The method is based on a hierarchical model that uses coarse‐grain values of species richness and fine‐grain environmental data as input.
Petr Keil, Walter Jetz
openaire +2 more sources
A review of spatial downscaling of satellite precipitation products
2020<p>Precipitation is an important component of the water cycle. Precipitation is characterized with high temporal and spatial variability. Accurate measurements of precipitation at high spatiotemporal resolution are essential for many applications in the fields of hydrology, meteorology and ecology.
Zheng Duan +3 more
openaire +1 more source
Spatially explicit downscaling and projection of population in mainland China
Science of The Total EnvironmentSpatially explicit population data is critical to investigating human-nature interactions, identifying at-risk populations, and informing sustainable management and policy decisions. Most long-term global population data have three main limitations: 1) they were estimated with simple scaling or trend extrapolation methods which are not able to capture ...
Xu, Wenru +7 more
openaire +2 more sources
A novel dual-layer composite framework for downscaling urban land surface temperature coupled with spatial autocorrelation and spatial heterogeneity [PDF]
International Journal of Applied Earth Observation and GeoinformationLand surface temperature (LST) captures fundamental information on the spatiotemporal variation of energy balance at the surface. The trade-off between spatial and temporal resolutions of remote sensing images (retrieved LSTs), however, restricts fine ...
Uwe Schlink +2 more
exaly +2 more sources
A Fast H.264 Spatial Downscaling Transcoder for Wireless Communication
2009 International Conference on Computational Science and Engineering, 2009Motivated by the wide adoption of H.264 and thedemand of universal multimedia data access overwireless network , this paper studies H.264homogeneous video t ranscoding with spatial resolutionconversion. First ly , we propose a fast video transcoder ,working entirely in the DCT-domain,to convert highquality H.264 bitstream into low bit rate stream ...
Min Li, Naixue Xiong, Chao Ma 0008
openaire +1 more source
A Frequent-Domain VideoTranscoder with Spatial Downscaling for H.264/AVC
2009 Fifth International Conference on Information Assurance and Security, 2009Wireless video communication is an important application supported by 3G mobile communication systems. In many applications,the pre-encoded video needs to be transcoded to lower spatial resolution to fit for various display screen sizes on mobile terminal devices.In this paper, we propose a fast video transcoder,working entirely in the frequent-domain,
Bo Wang, Dichen Liu
openaire +1 more source
Coupling statistical and dynamical methods for spatial downscaling of precipitation
Climatic Change, 2012The resolution of General Circulation Models (GCMs) is too coarse for climate change impact studies at the catchment or site-specific scales. To overcome this problem, both dynamical and statistical downscaling methods have been developed. Each downscaling method has its advantages and drawbacks, which have been described in great detail in the ...
Jie Chen +2 more
openaire +1 more source
Towards spatially coherent statistical downscaling
2013Towards spatially coherent statistical downscaling.
Radanovics, S. +4 more
openaire +1 more source