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Fernando Silvestre da Silva

dblp:45/716 · DBLP profile ↗
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1ranked-venue papers
0as first author
0since 2021 · last 2006
—ORCID · none

Domains — the database's venue-derived domains; a paper can count in several

Graphics, computer vision, multimedia, augmented reality and games · 1

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Computer graphics and multimedia
1 paper
Image and video coding · 100%

Topics — the 4 heaviest of 4, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Image and video coding › image compression
fractal image coding
0.112006
A fast and efficient hybrid fractal-wavelet image coder · IEEE Trans. Image Process. 2006
Image and video coding
image compression
0.112006
A fast and efficient hybrid fractal-wavelet image coder · IEEE Trans. Image Process. 2006
Image and video coding › scalable coding
SPIHT
0.112006
A fast and efficient hybrid fractal-wavelet image coder · IEEE Trans. Image Process. 2006
Image and video coding › image compression
wavelet-based image coding
0.112006
A fast and efficient hybrid fractal-wavelet image coder · IEEE Trans. Image Process. 2006

Methods — techniques the papers use, named apart from their topics

wavelet transform · 0.1set partitioning in hierarchical trees · 0.1fractal encoding · 0.1
YearPublicationVenuePosition
2006 A fast and efficient hybrid fractal-wavelet image coder
abstract
The excellent visual quality and compression rate of fractal image coding have limited applications due to exhaustive inherent encoding time. This paper presents a new fast and efficient image coder that applies the speed of the wavelet transform to the image quality of the fractal compression. Fast fractal encoding using Fisher's domain classification is applied to the lowpass subband of wavelet transformed image and a modified set partitioning in hierarchical trees (SPIHT) coding, on the remaining coefficients. Furthermore, image details and wavelet progressive transmission characteristics are maintained, no blocking effects from fractal techniques are introduced, and the encoding fidelity problem common in fractal-wavelet hybrid coders is solved. The proposed scheme promotes an average of 94% reduction in encoding-decoding time comparing to the pure accelerated Fractal coding results. The simulations also compare the results to the SPIHT wavelet coding. In both cases, the new scheme improves the subjective quality of pictures for high-medium-low bitrates.
Yuzo Iano, Fernando Silvestre da Silva, Ana Lúcia Mendes Cruz
IEEE Trans. Image Process.2