Nonstop Lose-Less Data Acquisition and Storing Method for Plasma Motion Images

Plasma diagnostic data analysis often requires the original raw data as they are, in other words, at the same frame rate and resolution of the CCD camera sensor. As a non-interlace VGA camera typically generates over 70 MB/s video stream, usual frame grabber cards apply the lossy compression encoder...

Full description

Saved in:
Bibliographic Details
Published in:Plasma and Fusion Research 2007, Vol.2, pp.S1117-S1117
Main Authors: NAKANISHI, Hideya, OHSUNA, Masaki, KOJIMA, Mamoru, IMAZU, Setsuo, NONOMURA, Miki, OKUMURA, Haruhiko, NAGAYAMA, Yoshio, KAWAHATA, Kazuo
Format: Article
Language:English
Subjects:
JPEG-LS
LABCOM/X
loss-less compression
MPEG
plasma diagnostics
real-time
streaming
zip
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Plasma diagnostic data analysis often requires the original raw data as they are, in other words, at the same frame rate and resolution of the CCD camera sensor. As a non-interlace VGA camera typically generates over 70 MB/s video stream, usual frame grabber cards apply the lossy compression encoder, such as mpeg-1/-2 or mpeg-4, to drastically lessen the bit rate. In this study, a new approach, which makes it possible to acquire and store such the wideband video stream without any quality reduction, has been successfully achieved. Simultaneously, the real-time video streaming is even possible at the original frame rate. For minimising the exclusive access time in every data storing, it has adopted the directory structure to hold every frame files separately, instead of one long consecutive file. The popular ‘zip’ archive method improves the portability of data files, however, the JPEG-LS image compression is applied inside by replacing its intrinsic deflate/inflate algorithm that has less performances for image data.
ISSN:1880-6821
1880-6821
DOI:10.1585/pfr.2.S1117