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- del Aguila Pla, Pol,1990-KTH,Teknisk informationsvetenskap (author)
Cell detection by functional inverse diffusion and non-negative group sparsity – Part II: Proximal optimization and Performance evaluation
- Article/chapterEnglish2018
Publisher, publication year, extent ...
- IEEE,2018
- electronicrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:kth-233827
- https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-233827URI
- https://doi.org/10.1109/TSP.2018.2868256DOI
Supplementary language notes
- Language:English
- Summary in:English
Part of subdatabase
- SwePubSwePub
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Notes
- QC 20180918
- In this two-part paper, we present a novel framework and methodology to analyze data from certain image-based biochemical assays, e.g., ELISPOT and Fluorospot assays. In this second part, we focus on our algorithmic contributions. We provide an algorithm for functional inverse diffusion that solves the variational problem we posed in Part I. As part of the derivation of this algorithm, we present the proximal operator for the non-negative group-sparsity regularizer, which is a novel result that is of interest in itself, also in comparison to previous results on the proximal operator of a sum of functions. We then present a discretized approximated implementation of our algorithm and evaluate it both in terms of operational cell-detection metrics and in terms of distributional optimal-transport metrics.
Subject headings and genre
- TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Signalbehandling hsv//swe
- ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Signal Processing hsv//eng
- TEKNIK OCH TEKNOLOGIER Medicinteknik Medicinsk bildbehandling hsv//swe
- ENGINEERING AND TECHNOLOGY Medical Engineering Medical Image Processing hsv//eng
- Proximal operator
- Non-negative group sparsity
- Functional optimization
- Biomedical imaging
- Source localization
- Electrical Engineering
- Elektro- och systemteknik
Added entries (persons, corporate bodies, meetings, titles ...)
- Jaldén, Joakim,1976-KTH,Teknisk informationsvetenskap(Swepub:kth)u16uao7t (author)
- KTHTeknisk informationsvetenskap (creator_code:org_t)
Related titles
- In:IEEE Transactions on Signal Processing: IEEE66:20, s. 5422-54371053-587X1941-0476
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