1. Identity statement | |
Reference Type | Thesis or Dissertation (Thesis) |
Site | mtc-m21c.sid.inpe.br |
Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
Identifier | 8JMKD3MGP3W34R/44ARSBE |
Repository | sid.inpe.br/mtc-m21c/2021/03.11.20.53 |
Last Update | 2021:07.06.22.00.54 (UTC) simone |
Metadata Repository | sid.inpe.br/mtc-m21c/2021/03.11.20.53.12 |
Metadata Last Update | 2022:04.03.23.15.42 (UTC) administrator |
Secondary Key | INPE-18433-TDI/3083 |
Citation Key | Monego:2021:ReImAs |
Title | Restauração de imagens astronômicas utilizando redes neurais, wavelets e regularização |
Alternate Title | Astronomical image restoration using neural networks, wavelets and regularization |
Course | CAP-COMP-DIPGR-INPE-MCTI-GOV-BR |
Year | 2021 |
Date | 2021-03-04 |
Access Date | 2024, May 10 |
Thesis Type | Dissertação (Mestrado em Computação Aplicada) |
Secondary Type | TDI |
Number of Pages | 101 |
Number of Files | 1 |
Size | 6200 KiB |
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2. Context | |
Author | Monego, Vinicius Schmidt |
Committee | Stephany, Stephan Campos Velho, Haroldo Fraga de (orientador) Kozakevicius, Alice de Jesus (orientadora) Queiroz, Gilberto Ribeiro de Silva Neto, Antônio José da Shiguemori, Ana Paula Abrantes Castro |
e-Mail Address | vinicius.monego@inpe.br, vinicius.monego@ecomp.ufsm.br |
University | Instituto Nacional de Pesquisas Espaciais (INPE) |
City | São José dos Campos |
History (UTC) | 2021-03-11 20:53:12 :: vinicius.monego@inpe.br -> administrator :: 2021-03-12 17:27:18 :: administrator -> pubtc@inpe.br :: 2021-03-12 17:27:53 :: pubtc@inpe.br -> vinicius.monego@inpe.br :: 2021-04-26 14:28:45 :: vinicius.monego@inpe.br -> pubtc@inpe.br :: 2021-04-26 15:48:33 :: pubtc@inpe.br -> vinicius.monego@inpe.br :: 2021-05-01 01:25:00 :: vinicius.monego@inpe.br -> pubtc@inpe.br :: 2021-07-06 20:19:33 :: pubtc@inpe.br -> simone :: 2021-07-06 20:20:55 :: simone :: -> 2021 2021-07-06 21:10:16 :: simone -> pubtc@inpe.br :: 2021 2021-07-07 13:26:04 :: pubtc@inpe.br -> simone :: 2021 2021-07-07 13:39:14 :: simone -> administrator :: 2021 2022-04-03 23:15:42 :: administrator -> :: 2021 |
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3. Content and structure | |
Is the master or a copy? | is the master |
Content Stage | completed |
Transferable | 1 |
Keywords | problemas inversos restauração de imagens ruído regularização transformada wavelet inverse problems image restoration noise regularization wavelet transform |
Abstract | Neste trabalho são estudadas diferentes técnicas de restauração de imagens, envolvendo métodos de regularização, filtros wavelets e redes neurais. Mais especificamente, as técnicas escolhidas foram regularização por Tikhonov, regularização por entropia, regularização da variação total, filtro de Wiener, filtragem wavelet, redes neurais convolucionais e filtro neural multiescala. As imagens de interesse são imagens astronômicas, provenientes da fonte HubbleSite, que disponibiliza imagens do telescópio espacial Hubble sob uma licença compatível a domínio público. As imagens são degradadas com ruído gaussiano de desvio padrão de 5%, 15% e 25%. A performance de cada um dos métodos de restauração é avaliada através das métricas: NRMSE (Normalized Root-Mean-Square Error Erro Médio Quadrático Normalizado), PSNR (Peak Signal-to-Noise Ratio Razão de pico sinal-ruído) e SSIM (Structural Similarity Index Measure Medida do índice de similaridade estrutural). ABSTRACT: In this work, different image restoration techniques are studied, involving regularization methods, wavelet filters, and neural networks. More specifically, the techniques chosen were regularization by Tikhonov, regularization by entropy, total variation regularization, Wiener filter, wavelet filtering, convolutional neural networks and multiscale neural filter. The images of interest are astronomical images from the HubbleSite source, which makes images from the Hubble space telescope available under a license compatible with the public domain. The images are degraded with standard deviation Gaussian noise of 5%, 10% and 15%. The performance of each of the restoration method is evaluated using the following metrics: Normalized Root- Mean-Squared Error (NRMSE), Peak Signal-to-Noise Ratio (PSNR) and Structural Similarity Index Measure (SSIM). |
Area | COMP |
Arrangement 1 | urlib.net > BDMCI > Fonds > Produção pgr ATUAIS > CAP > Restauração de imagens... |
Arrangement 2 | urlib.net > BDMCI > Fonds > Produção a partir de 2021 > CGIP > Restauração de imagens... |
doc Directory Content | access |
source Directory Content | originais/@4primeirasPaginas.pdf | 06/07/2021 18:58 | 414.2 KiB | originais/DEFESA FINAL DE DISSERTAÇÃO DE VINICIUS SCHMIDT MONEGO - CAP.pdf | 05/03/2021 16:35 | 185.5 KiB | originais/dissertacao-correcoes-finais.pdf | 03/05/2021 08:01 | 5.5 MiB | |
agreement Directory Content | |
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4. Conditions of access and use | |
data URL | http://urlib.net/ibi/8JMKD3MGP3W34R/44ARSBE |
zipped data URL | http://urlib.net/zip/8JMKD3MGP3W34R/44ARSBE |
Language | pt |
Target File | publicacao.pdf |
User Group | pubtc@inpe.br simone vinicius.monego@inpe.br |
Visibility | shown |
Copyright License | urlib.net/www/2012/11.12.15.10 |
Rightsholder | originalauthor yes |
Read Permission | allow from all |
Update Permission | not transferred |
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5. Allied materials | |
Mirror Repository | urlib.net/www/2017/11.22.19.04.03 |
Next Higher Units | 8JMKD3MGPCW/3F2PHGS 8JMKD3MGPCW/46KUES5 |
Citing Item List | sid.inpe.br/bibdigital/2022/04.03.23.11 2 sid.inpe.br/bibdigital/2013/10.12.22.16 2 |
Host Collection | urlib.net/www/2017/11.22.19.04 |
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6. Notes | |
Empty Fields | academicdepartment affiliation archivingpolicy archivist callnumber contenttype copyholder creatorhistory descriptionlevel dissemination doi electronicmailaddress format group isbn issn label lineage mark nextedition notes number orcid parameterlist parentrepositories previousedition previouslowerunit progress readergroup resumeid schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype url versiontype |
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