Journal ArticleDOI
Efficient Lossless to Lossy Transcoding of JPEG 2000 Codestreams for D-Cinema
TLDR
Experimental results show dramatically reduced computational complexity while the subjective image quality closely approximates that of full lossless decoding.Abstract:
This paper presents a method of lossless to lossy transcoding of images that takes advantage of bitplane coding in JPEG 2000. Decoding JPEG 2000 lossless codestreams and subsequently re-encoding them into JPEG 2000 lossy streams consumes lots of computational time. To reduce this time, partial decoding of the lossless codestream is proposed. In addition, by employing a unique rate control, the image quality degradation usually associated with partial decoding is reduced. Experimental results show dramatically reduced computational complexity while the subjective image quality closely approximates that of full lossless decoding.read more
Citations
More filters
Patent
Transform system and method in video and image compression
TL;DR: In this paper, a system and method for frequency reduction and restoration in digital data is proposed to reduce the visual redundancy of digital data, such as in video data and image data.
References
More filters
Journal ArticleDOI
The JPEG2000 still image coding system: an overview
TL;DR: It is interesting to note that JPEG2000 is being designed to address the requirements of a diversity of applications, e.g. Internet, color facsimile, printing, scanning, digital photography, remote sensing, mobile applications, medical imagery, digital library and E-commerce.
Journal ArticleDOI
Rate-distortion estimation for fast JPEG2000 compression at low bit-rates
TL;DR: A rate-distortion estimation method that enables precompression rate- Distortion optimisation to be carried out, wherein only the required passes need to be coded is presented.
Proceedings ArticleDOI
A new approach to reduce encoding time in EBCOT algorithm for JPEG2000
TL;DR: The experimental results show that the encoding time of the proposed algorithm outperforms JPEG2000 while PSNR has been maintained at almost the same level.
Journal ArticleDOI
Efficient JPEG 2000 VBR compression with true constant perceived quality
TL;DR: A novel JPEG 2000 variable bit rate (VBR) encoding system for digital cinema that uses visually lossless viewing distance as the image quality metric to provide true constant perceived quality.
Proceedings ArticleDOI
Fast rate allocation schemes for JPEG2000
Wu Zongze,Zheng Nanning +1 more
TL;DR: Two schemes are proposed to reduce computation and memory for the real-time rate allocation in JPEG2000 and a simplification scheme is used to facilitate calculation of the rate-distortion slopes based on some approximate treatments by means of logarithm expression.
Related Papers (5)
On scalable lossless video coding based on sub-pixel accurate MCTF
Sehoon Yea,William A. Pearlman +1 more
Lossless compression of correlated images/data with low complexity encoder using distributed source coding techniques
Mortuza Ali,Manzur Murshed +1 more