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Title:Postopek stiskanja podatkov brez izgub za vgrajene sisteme : diplomsko delo
Authors:ID Topolovec Klemenčič, Vid (Author)
ID Mlakar, Uroš (Mentor) More about this mentor... New window
ID Kramberger, Iztok (Comentor)
Files:.pdf UN_Topolovec_Klemencic_Vid_2021.pdf (1,18 MB)
MD5: 27BBA2943B959A45004C8AE328A0489E
PID: 20.500.12556/dkum/b97bca5d-0d44-4bfe-b9d6-299992112bbb
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FERI - Faculty of Electrical Engineering and Computer Science
Abstract:V diplomskem delu smo izdelali programsko opremo, ki bi z uporabo kompresijskega postopka brez izgub zmanjšala velikost datotek in minimizirala čas pošiljanja oz. naredila sistem v vesolju bolj odziven. Naredili smo splošni pregled algoritmov za kompresijo in za glavni algoritem izbrali CCSDS 121.0-B-2 ter ga primerjali s sorodnima algoritmoma LZW in Heatshrink. Testiranje smo izvedli nad sivinskimi slikami in binarnem zapisu, ki smo ga zajeli iz GPS-a. Najbolj primeren algoritem za stiskanje sivinskih slik je CCSDS 121.0-B-2, zaradi kompresijskega razmerja in časa kompresije. Najbolj primeren algoritem za stiskanje krajših binarnih zapisov pa Heatshrink, zaradi kompresijskega razmerja in izredno kratkega časa dekompresije.
Keywords:kompresija, dekompresija, vgrajeni sistem, Skylabs, PicoSky™ evaluacijska plošča, CCSDS 121.0-B-2, Heatshrink, LZW, slike, splošni binarni zapisi
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[V. Topolovec Klemenčič]
Year of publishing:2021
Number of pages:VII, 31 str.
PID:20.500.12556/DKUM-80512 New window
UDC:004.627(043.2)
COBISS.SI-ID:96193283 New window
Publication date in DKUM:18.10.2021
Views:885
Downloads:107
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FERI
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Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:15.09.2021

Secondary language

Language:English
Title:Lossless compression process for embedded systems
Abstract:In this thesis, we developed a software which would use compression to reduce the size of a file without losing any information, minimize the sending time and make the system in space more responsive. We made a brief overview of algorithms used for compression. For our main algorithm we chose the CCSDS 121.0-B-2, which we compared to similar lossless algorithms LZW and Heatshrink. Testing was made with grayscale images and binary data taken from the GPS. The most suitable algorithm for compression of grayscale images was CCSDS 121.0-B-2, because of its compression ratio and compression time. The most suitable algorithm for compression of smaller binary data is Heatshrink, reason being its compression ratio and exceptionally fast decompression time.
Keywords:compression, decompression, embedded system, Skylabs, PicoSky™ evaluation board, CCSDS 121.0-B-2, Heatshrink, LZW, images, general binary data


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