NDLI: Reduced memory, low complexity embedded image compression algorithm using hierarchical listless discrete Tchebichef transform

Content Provider	IET Digital Library
Author	Senapati, Ranjan Kumar Pati, Umesh C. Mahapatra, Kamala Kanta
Abstract	Listless set partitioning embedded block (LSK) and set partitioning embedded block (SPECK) are known for their low complexity and simple implementation. However, the drawback is that these block-based algorithms encode each insignificant subband by a zero. This generates many zeros at earlier passes because the number of significant coefficients at higher bitplanes is likely to be very few in a transformed image. An improved LSK (ILSK) algorithm that codes a single zero to several insignificant subbands is proposed. This reduces the length of the output bit string, encoding/decoding time and dynamic memory requirement at early passes. Furthermore, ILSK algorithm is coupled with discrete Tchebichef transform (DTT). This gives rise to a novel coder named as hierarchical listless DTT (HLDTT). The proposed HLDTT has desirable attributes like full embeddedness for progressive transmission, precise rate control for constant bit rate traffic and low complexity for low power applications. The performance of HLDTT is assessed using peak-signal-to-noise-ratio (PSNR) and structural-similarity-index-metric (SSIM). Extensive simulation conducted on various standard test images shows that HLDTT exhibits significant improvement in PSNR values from lower to medium bit rates. At the same time, HLDTT shows improvement in SSIM values on all bit rates.
Starting Page	213
Ending Page	238
Page Count	26
ISSN	17519659
Volume Number	8
e-ISSN	17519667
Issue Number	Issue 4, Apr (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-ipr/8/4
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-ipr.2012.0295
Journal	IET Image Processing
Publisher Date	2014-02-13
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Block-based Algorithm Combinatorial Mathematics Computer Vision And Image Processing Technique Constant Bit Rate Traffic Data Compression Decoding Time Discrete Transforms Dynamic Memory Requirement Encoding Time Hand Held Mobile Device Hierarchical Listless Discrete Tchebichef Transform HLDTT ILSK Algorithm Image And Video Coding Image Coding Integral Transforms Listless Set Partitioning Embedded Block Low Complexity Embedded Image Compression Algorithm Mobile Computing Notebook Computers Output Bit String Peak-signal-to-noise-ratio Portable Device PSNR Reduced Memory Image Compression Algorithm Set Partitioning Embedded Block Set Theory SPECK SSIM Structural-symmetric-index-metric
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering Computer Vision and Pattern Recognition Software

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