Results 21 to 30 of about 3,974,478 (339)

Zero-Reference Deep Curve Estimation for Low-Light Image Enhancement [PDF]

open access: yesComputer Vision and Pattern Recognition, 2020
The paper presents a novel method, Zero-Reference Deep Curve Estimation (Zero-DCE), which formulates light enhancement as a task of image-specific curve estimation with a deep network.
Chunle Guo   +6 more
semanticscholar   +1 more source

CTFFIND4: Fast and accurate defocus estimation from electron micrographs

open access: yesbioRxiv, 2015
CTFFIND is a widely-used program for the estimation of objective lens defocus parameters from transmission electron micrographs. Defocus parameters are estimated by fitting a model of the microscope’s contrast transfer function (CTF) to an image’s ...
A. Rohou, N. Grigorieff
semanticscholar   +1 more source

FlowNet 2.0: Evolution of Optical Flow Estimation with Deep Networks [PDF]

open access: yesComputer Vision and Pattern Recognition, 2016
The FlowNet demonstrated that optical flow estimation can be cast as a learning problem. However, the state of the art with regard to the quality of the flow has still been defined by traditional methods.
Eddy Ilg   +5 more
semanticscholar   +1 more source

Silhouette estimation

open access: yesJournal of the Optical Society of America A, 2014
Silhouettes arise in a variety of imaging scenarios. Pristine silhouettes are often degraded via blurring, detector sampling, and detector noise. We present a maximum a posteriori estimator for the restoration of parameterized facial silhouettes. Extreme dealiasing and dramatic superresolution, well beyond the diffraction limit, are demonstrated ...
Paxman, Richard G   +3 more
openaire   +4 more sources

Trends in anthropogenic ammonia emissions in China since 1980: A review of approaches and estimations

open access: yesFrontiers in Environmental Science, 2023
Ammonia (NH3) emissions from intensive anthropogenic activities is an important component in the global nitrogen cycle that has triggered large negative impacts on air quality and ecosystems worldwide.
Jianan Chen   +8 more
doaj   +1 more source

Group contribution methods for estimating the properties of polymer systems [PDF]

open access: yesHemijska Industrija, 2006
Polymer materials are nowadays used in a wide range of technological applications. Reliable knowledge of the thermo physical properties of pure polymers and their mixtures in the whole composition and a wide temperature and pressure range determines ...
Bogdanić Grozdana
doaj   +1 more source

Estimation of cost-effectiveness of poplar wood production in poplar plantations in Ravni Srem based on the method of pay back period [PDF]

open access: yesGlasnik Šumarskog Fakulteta: Univerzitet u Beogradu, 2011
Poplar plantations are a category of fixed assets in forestry, i.e. the assets with a biological character. They are related to their site, they are cultivated for a relatively long time and they have a relatively long utilization cycle, with the ...
Keča Ljiljana
doaj   +1 more source

Nonparametric Estimation from Incomplete Observations

open access: yes, 1958
In lifetesting, medical follow-up, and other fields the observation of the time of occurrence of the event of interest (called a death) may be prevented for some of the items of the sample by the previous occurrence of some other event (called a loss ...
E. Kaplan, P. Meier
semanticscholar   +1 more source

Towards Robust Monocular Depth Estimation: Mixing Datasets for Zero-Shot Cross-Dataset Transfer [PDF]

open access: yesIEEE Transactions on Pattern Analysis and Machine Intelligence, 2019
The success of monocular depth estimation relies on large and diverse training sets. Due to the challenges associated with acquiring dense ground-truth depth across different environments at scale, a number of datasets with distinct characteristics and ...
René Ranftl   +4 more
semanticscholar   +1 more source

Fast model-based estimation of ancestry in unrelated individuals.

open access: yesGenome Research, 2009
Population stratification has long been recognized as a confounding factor in genetic association studies. Estimated ancestries, derived from multi-locus genotype data, can be used to perform a statistical correction for population stratification.
David H. Alexander   +2 more
semanticscholar   +1 more source

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