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Image coding using lapped biorthogonal transform

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Abstract

The wireless sensor network utilizes image compression algorithms like JPEG, JPEG2000, and SPIHT for image transmission with high coding efficiency. During compression, discrete cosine transform (DCT)–based JPEG has blocking artifacts at low bit-rates. But this effect is reduced by discrete wavelet transform (DWT)–based JPEG2000 and SPIHT algorithm but it possess high computational complexity. This paper proposes an efficient lapped biorthogonal transform (LBT)–based low-complexity zerotree codec (LZC), an entropy coder for image coding algorithm to achieve high compression. The LBT-LZC algorithm yields high compression, better visual quality with low computational complexity. The performance of the proposed method is compared with other popular coding schemes based on LBT, DCT and wavelet transforms. The simulation results reveal that the proposed algorithm reduces the blocking artifacts and achieves high compression. Besides, it is analyzed for noise resilience.

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Abbreviations

LBT:

Lapped biorthogonal transform

LT:

Lapped transform

LOT:

Lapped orthogonal transform

LZC:

Low-complexity zerotree codec

JPEG:

Joint photographic experts group

SPIHT:

Set partitioning in hierarchical trees

DCT:

Discrete cosine transform

DWT:

Discrete wavelet transform

WSN:

Wireless sensor networks

PSNR:

Peak signal to noise ratio

MPEG:

Moving pictures experts group

EBCOT:

Embedded block coding with optimized truncation

HD:

High definition

FDCT:

Forward discrete cosine transform

IDCT:

Inverse discrete cosine transform

FLOT:

Forward lapped orthogonal transform

ILOT:

Inverse lapped orthogonal transform

FLBT:

Forward lapped biorthogonal transform

ILBT:

Inverse lapped biorthogonal transform

OALBT:

Orientation adaptive LBT

VLLBT:

Variable length LBT

ZTC:

Zero tree codec

MPS:

Most probable symbol

LPS:

Least probable symbol

BPP:

Bits per pixel

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Deepa, P., Vasanthanayaki, C. Image coding using lapped biorthogonal transform. SIViP 7, 879–888 (2013). https://doi.org/10.1007/s11760-011-0277-x

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