Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/45028
DC FieldValueLanguage
dc.contributor.authorCallico, G. M.en_US
dc.contributor.authorLopez, Sebastianen_US
dc.contributor.authorGabarda, Salvadoren_US
dc.contributor.authorGil, Elenaen_US
dc.contributor.authorCristobal, Gabrielen_US
dc.contributor.authorLópez, Joséen_US
dc.contributor.authorSarmiento, Robertoen_US
dc.contributor.otherLopez, Sebastian-
dc.contributor.otherLopez, Jose-
dc.contributor.otherCristobal, Gabriel-
dc.contributor.otherCallico, Gustavo Marrero-
dc.date.accessioned2018-11-22T06:43:11Z-
dc.date.available2018-11-22T06:43:11Z-
dc.date.issued2009en_US
dc.identifier.isbn9780819476371en_US
dc.identifier.issn0277-786Xen_US
dc.identifier.urihttp://hdl.handle.net/10553/45028-
dc.description.abstractThis paper presents the results of measuring the image quality of a video compression system based in the H.264 standard using the Anisotropic Quality Index (AQI). These results have been compared with the quality measured by means of the traditionally used Peak Signal to Noise Ratio (PSNR). The PSNR has demonstrated to be an unreliable way to compute the perceptual quality of images. Although it is widely used because its simplicity and immediacy to be computed, the PSNR and other methods based in the image differences measurement (as the Root Mean Squared Error or RMSE) experience the problem of not properly reflecting the real perceptual image quality. Images with the same amount of noise can present similar PSNRs values even with very different perceptual appearance. In the other side, the AQI has proven to be a more reliable way to analytically measure the perceptual image quality. This new measure is based on the use of a particular type of the high-order Rényi entropies. This method is based on measuring the anisotropy of the image through the variance of the expected value of the pixel-wise directional image entropy. Moreover, the AQI has the additional benefit of not needing a reference image. The reference image, compulsory in the PSNR computation, is usually impossible to obtain in real situations, thus relegating the PSNR only to test-bench developments. The possibility of computing the AQI opens the ability of self-regulated compression systems based on the adjustment of parameters that exhibit greater influence on the final image quality. This work shows the results of compressing several standard video sequences using the H.264 video compression standard. Compared with the PSNR, the AQI represents a better indicator of the perceptual quality of images.en_US
dc.languageengen_US
dc.relation.ispartofProceedings of SPIE - The International Society for Optical Engineeringen_US
dc.sourceProceedings of SPIE - The International Society for Optical Engineering[ISSN 0277-786X],v. 7363 (73630I)en_US
dc.subject3307 Tecnología electrónicaen_US
dc.subject.otherAnisotropic Quality Indexen_US
dc.subject.otherImage quality assessmenten_US
dc.subject.otherPeak Signal to Noise Ratioen_US
dc.subject.otherVideo compressionen_US
dc.titleAnisotropic quality measurement applied to H.264 video compressionen_US
dc.typeinfo:eu-repo/semantics/conferenceObjecten_US
dc.typeConferenceObjecten_US
dc.relation.conferenceConference on VLSI Circuits and Systems IVen_US
dc.identifier.doi10.1117/12.821652en_US
dc.identifier.scopus69949164089-
dc.identifier.isi000300007400012-
dcterms.isPartOfVlsi Circuits And Systems Iv
dcterms.sourceVlsi Circuits And Systems Iv[ISSN 0277-786X],v. 7363
dc.contributor.authorscopusid56006321500-
dc.contributor.authorscopusid57187722000-
dc.contributor.authorscopusid9638117900-
dc.contributor.authorscopusid25923455300-
dc.contributor.authorscopusid55665855900-
dc.contributor.authorscopusid7404444793-
dc.contributor.authorscopusid35609452100-
dc.identifier.issue73630I-
dc.relation.volume7363en_US
dc.investigacionIngeniería y Arquitecturaen_US
dc.type2Actas de congresosen_US
dc.identifier.wosWOS:000300007400012-
dc.contributor.daisngid506422-
dc.contributor.daisngid465777-
dc.contributor.daisngid1497908-
dc.contributor.daisngid1879556-
dc.contributor.daisngid1666544-
dc.contributor.daisngid239508-
dc.contributor.daisngid846472-
dc.contributor.daisngid116294-
dc.identifier.investigatorRIDL-8108-2014-
dc.identifier.investigatorRIDL-6046-2014-
dc.identifier.investigatorRIDB-7216-2012-
dc.identifier.investigatorRIDL-6036-2014-
dc.utils.revisionen_US
dc.contributor.wosstandardWOS:Callico, GM-
dc.contributor.wosstandardWOS:Lopez, S-
dc.contributor.wosstandardWOS:Gabarda, S-
dc.contributor.wosstandardWOS:Gil, E-
dc.contributor.wosstandardWOS:Cristobal, G-
dc.contributor.wosstandardWOS:Lopez, J-
dc.contributor.wosstandardWOS:Sarmiento, R-
dc.date.coverdateSeptiembre 2009en_US
dc.identifier.conferenceidevents120781-
dc.identifier.ulpgces
dc.contributor.buulpgcBU-TELen_US
item.fulltextSin texto completo-
item.grantfulltextnone-
crisitem.event.eventsstartdate04-05-2009-
crisitem.event.eventsenddate06-05-2009-
crisitem.author.deptGIR IUMA: Diseño de Sistemas Electrónicos Integrados para el procesamiento de datos-
crisitem.author.deptIU de Microelectrónica Aplicada-
crisitem.author.deptDepartamento de Ingeniería Electrónica y Automática-
crisitem.author.deptGIR IUMA: Diseño de Sistemas Electrónicos Integrados para el procesamiento de datos-
crisitem.author.deptIU de Microelectrónica Aplicada-
crisitem.author.deptDepartamento de Ingeniería Electrónica y Automática-
crisitem.author.deptGIR IUMA: Diseño de Sistemas Electrónicos Integrados para el procesamiento de datos-
crisitem.author.deptIU de Microelectrónica Aplicada-
crisitem.author.deptDepartamento de Ingeniería Electrónica y Automática-
crisitem.author.deptGIR IUMA: Diseño de Sistemas Electrónicos Integrados para el procesamiento de datos-
crisitem.author.deptIU de Microelectrónica Aplicada-
crisitem.author.deptDepartamento de Ingeniería Electrónica y Automática-
crisitem.author.orcid0000-0002-3784-5504-
crisitem.author.orcid0000-0002-2360-6721-
crisitem.author.orcid0000-0002-6304-2801-
crisitem.author.orcid0000-0002-4843-0507-
crisitem.author.parentorgIU de Microelectrónica Aplicada-
crisitem.author.parentorgIU de Microelectrónica Aplicada-
crisitem.author.parentorgIU de Microelectrónica Aplicada-
crisitem.author.parentorgIU de Microelectrónica Aplicada-
crisitem.author.fullNameMarrero Callicó, Gustavo Iván-
crisitem.author.fullNameLópez Suárez, Sebastián Miguel-
crisitem.author.fullNameLópez Feliciano, José Francisco-
crisitem.author.fullNameSarmiento Rodríguez, Roberto-
Appears in Collections:Actas de congresos
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