Matches in SemOpenAlex for { <https://semopenalex.org/work/W2009909141> ?p ?o ?g. }
Showing items 1 to 75 of
75
with 100 items per page.
- W2009909141 abstract "Refocusing a plenoptic image by digital means and after the exposure has been thoroughly studied in the last years, but few efforts have been made in the direction of real time implementation in a constrained environment such as that provided by current mobile phones and tablets. In this work we address the aforementioned challenge demonstrating that a complete focal stack, comprising 31 refocused planes from a (256ff16)<sup>2 </sup>plenoptic image, can be achieved within seconds by a current SoC mobile phone platform. The election of an appropriate algorithm is the key to success. In a previous work we developed an algorithm, the fast approximate 4D:3D discrete Radon transform, that performs this task with linear time complexity where others obtain quadratic or linearithmic time complexity. Moreover, that algorithm does not requires complex number transforms, trigonometric calculus nor even multiplications nor oat numbers. Our algorithm has been ported to a multi core ARM chip on an off-the-shelf tablet running Android. A careful implementation exploiting parallelism at several levels has been necessary. The final implementation takes advantage of multi-threading in native code and NEON SIMD instructions. As a result our current implementation completes the refocusing task within seconds for a 16 megapixels image, much faster than previous attempts running on powerful PC platforms or dedicated hardware. The times consumed by the different stages of the digital refocusing are given and the strategies to achieve this result are discussed. Time results are given for a variety of environments within Android ecosystem, from the weaker/cheaper SoCs to the top of the line for 2013." @default.
- W2009909141 created "2016-06-24" @default.
- W2009909141 creator A5023131020 @default.
- W2009909141 creator A5049943556 @default.
- W2009909141 creator A5056075406 @default.
- W2009909141 creator A5065535367 @default.
- W2009909141 creator A5073417686 @default.
- W2009909141 creator A5083202836 @default.
- W2009909141 date "2014-05-15" @default.
- W2009909141 modified "2023-09-26" @default.
- W2009909141 title "Refocusing from a plenoptic camera within seconds on a mobile phone" @default.
- W2009909141 cites W2065188617 @default.
- W2009909141 cites W2143050242 @default.
- W2009909141 cites W4235994577 @default.
- W2009909141 doi "https://doi.org/10.1117/12.2053186" @default.
- W2009909141 hasPublicationYear "2014" @default.
- W2009909141 type Work @default.
- W2009909141 sameAs 2009909141 @default.
- W2009909141 citedByCount "0" @default.
- W2009909141 crossrefType "proceedings-article" @default.
- W2009909141 hasAuthorship W2009909141A5023131020 @default.
- W2009909141 hasAuthorship W2009909141A5049943556 @default.
- W2009909141 hasAuthorship W2009909141A5056075406 @default.
- W2009909141 hasAuthorship W2009909141A5065535367 @default.
- W2009909141 hasAuthorship W2009909141A5073417686 @default.
- W2009909141 hasAuthorship W2009909141A5083202836 @default.
- W2009909141 hasConcept C106251023 @default.
- W2009909141 hasConcept C111919701 @default.
- W2009909141 hasConcept C11413529 @default.
- W2009909141 hasConcept C121684516 @default.
- W2009909141 hasConcept C138885662 @default.
- W2009909141 hasConcept C149635348 @default.
- W2009909141 hasConcept C150552126 @default.
- W2009909141 hasConcept C173608175 @default.
- W2009909141 hasConcept C199360897 @default.
- W2009909141 hasConcept C2777904410 @default.
- W2009909141 hasConcept C2778707766 @default.
- W2009909141 hasConcept C31972630 @default.
- W2009909141 hasConcept C41008148 @default.
- W2009909141 hasConcept C41895202 @default.
- W2009909141 hasConcept C557433098 @default.
- W2009909141 hasConcept C9390403 @default.
- W2009909141 hasConceptScore W2009909141C106251023 @default.
- W2009909141 hasConceptScore W2009909141C111919701 @default.
- W2009909141 hasConceptScore W2009909141C11413529 @default.
- W2009909141 hasConceptScore W2009909141C121684516 @default.
- W2009909141 hasConceptScore W2009909141C138885662 @default.
- W2009909141 hasConceptScore W2009909141C149635348 @default.
- W2009909141 hasConceptScore W2009909141C150552126 @default.
- W2009909141 hasConceptScore W2009909141C173608175 @default.
- W2009909141 hasConceptScore W2009909141C199360897 @default.
- W2009909141 hasConceptScore W2009909141C2777904410 @default.
- W2009909141 hasConceptScore W2009909141C2778707766 @default.
- W2009909141 hasConceptScore W2009909141C31972630 @default.
- W2009909141 hasConceptScore W2009909141C41008148 @default.
- W2009909141 hasConceptScore W2009909141C41895202 @default.
- W2009909141 hasConceptScore W2009909141C557433098 @default.
- W2009909141 hasConceptScore W2009909141C9390403 @default.
- W2009909141 hasLocation W20099091411 @default.
- W2009909141 hasOpenAccess W2009909141 @default.
- W2009909141 hasPrimaryLocation W20099091411 @default.
- W2009909141 hasRelatedWork W2053552635 @default.
- W2009909141 hasRelatedWork W2162839303 @default.
- W2009909141 hasRelatedWork W2345469769 @default.
- W2009909141 hasRelatedWork W2357021976 @default.
- W2009909141 hasRelatedWork W2365976857 @default.
- W2009909141 hasRelatedWork W2534887851 @default.
- W2009909141 hasRelatedWork W2736636535 @default.
- W2009909141 hasRelatedWork W2993780293 @default.
- W2009909141 hasRelatedWork W4312276195 @default.
- W2009909141 hasRelatedWork W2557008787 @default.
- W2009909141 isParatext "false" @default.
- W2009909141 isRetracted "false" @default.
- W2009909141 magId "2009909141" @default.
- W2009909141 workType "article" @default.