Efficient 2D DCT architecture based on approximate compressors for image compression with HEVC intra-prediction

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dc.authorid0000-0002-9486-519Xen_US
dc.authorid0000-0002-8113-0514en_US
dc.contributor.authorAkman, Ali
dc.contributor.authorCekli, Serap
dc.date.accessioned2023-11-01T09:07:11Z
dc.date.available2023-11-01T09:07:11Z
dc.date.issued2023en_US
dc.departmentFakülteler, Mühendislik ve Tasarım Fakültesi, Bilgisayar Mühendisliği Bölümüen_US
dc.description.abstractThis study presents a design of two-dimensional (2D) discrete cosine transform (DCT) architecture to be used with high efciency video coding (HEVC) intra-prediction method in image compression. Since the amount of calculation required by the transform step in HEVC is high and accordingly the power consumption is high, a novel DCT architecture for HEVC is proposed to reduce this calculation complexity and power consumption. This architecture is based on erroneous calcula tions in the steps, which can be ignored in the quantizing step. For this purpose, approximate 5:3 compressor circuits with diferent error rates are designed and used instead of addition/subtraction in DCT architecture. This DCT architecture is designed to support 4×4, 8×8, 16×16 and 32×32 transform blocks. The designed architecture is performed on FPGA and experiments are conducted. In these experiments, hardware performance parameters are examined, and it is proved that the use of approximate compressor can provide advantages on power consumption and physical area. The efciency of the proposed architecture is investigated by performing image compression and video coding tests.en_US
dc.identifier.doi10.1007/s11554-023-01261-3en_US
dc.identifier.issue2en_US
dc.identifier.scopus2-s2.0-85149127001en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.urihttps://hdl.handle.net/11467/6864
dc.identifier.urihttps://doi.org/10.1007/s11554-023-01261-3
dc.identifier.volume20en_US
dc.identifier.wosWOS:000937731600001en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherInstitute for Ionicsen_US
dc.relation.ispartofJournal of Real-Time Image Processingen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/embargoedAccessen_US
dc.subjectHEVC, Intra-prediction, Image compression, Approximate compressor, 2D DCT architectureen_US
dc.titleEfficient 2D DCT architecture based on approximate compressors for image compression with HEVC intra-predictionen_US
dc.typeArticleen_US

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