Low-complexity and efficient image coder/decoder with quad-tree search model for embedded computing platforms

Among the existing image coding methods, set partition in hierarchy tree (SPIHT) becomes a favourable choice for the energy-constrained embedded computing system because of its simplicity and high coding efficiency. In this study, the authors presented a quad-tree search model which is able to provi...

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Bibliographic Details
Published in:IET image processing Vol. 12; no. 2; pp. 235 - 242
Main Author: Ma, Tao
Format: Journal Article
Language:English
Published: The Institution of Engineering and Technology 01.02.2018
Subjects:
adaptive arithmetic code
adaptive codes
arithmetic codes
code rates
codecs
decoding
embedded processing communication systems
energy consumption
energy‐constrained embedded computing system
image codec
image coder
image coding
image coding methods
image decoder
JPEG2000
peak signal‐to‐noise ratio
quadtrees
quad‐tree search model
Research Article
search problems
set partition in hierarchy tree
SPIHT
image codec
JPEG2000
codecs
energy-constrained embedded computing system
adaptive codes
peak signal-to-noise ratio
code rates
decoding
arithmetic codes
SPIHT
image coder
set partition in hierarchy tree
adaptive arithmetic code
image decoder
embedded processing communication systems
quad-tree search model
quadtrees
image coding methods
image coding
energy consumption
search problems
ISSN:1751-9659, 1751-9667
Online Access:Get full text
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Summary:Among the existing image coding methods, set partition in hierarchy tree (SPIHT) becomes a favourable choice for the energy-constrained embedded computing system because of its simplicity and high coding efficiency. In this study, the authors presented a quad-tree search model which is able to provide the higher coding efficiency than the model used in SPIHT. By applying this model, the authors proposed a new image codec, which is able to surpass SPIHT by 0.2–0.5 dB in peak signal-to-noise ratio over various code rates, and its performance is even comparable to SPIHT with adaptive arithmetic code and JPEG2000. Also an experiment is conducted to show the complexity of the proposed codec is the same as SPIHT without the complicated arithmetic codes. This property is critically favoured in embedded processing communication systems where energy consumption and speed are priority concerns.
ISSN:1751-9659
1751-9667
DOI:10.1049/iet-ipr.2017.0469