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Title:STISKANJE RASTRSKIH KRIVULJ Z ALGORITMOM VERIŽENJA EKSONOV
Authors:ID Podbregar, David (Author)
ID Podgorelec, David (Mentor) More about this mentor... New window
Files:.pdf MAG_Podbregar_David_2013.pdf (1,80 MB)
MD5: 4641EA3CD07BE07D8D82975680932DDF
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.09 - Master's Thesis
Organization:FERI - Faculty of Electrical Engineering and Computer Science
Abstract:V magistrskem delu preučimo področje stiskanja rastrskih krivulj z verižnimi kodami. Pri algoritmih, ki ne kodirajo ločeno vsakega premika (piksla, simbola) vzdolž krivulje, ampak uvajajo samostojne kode tudi za pogostejša zaporedja dveh ali več premikov, se srečamo s problemom, ko je možno daljše zaporedje razdeliti na krajša podzaporedja na veliko različnih načinov. Za optimizacijo rešitve tega problema si sposodimo algoritem veriženja eksonov, ki v bioinformatiki služi za prepoznavanje (in primerjavo) neznanih genov. S pomočjo statističnih modelov ga prilagodimo za problem stiskanja rastrskih krivulj. V delu preučimo različne statistične modele in njihovo uspešnost pri stiskanju. S pomočjo programske implementacije predstavimo prednosti in slabosti razvitega pristopa. Na koncu nakažemo izhodišča za nadaljnje raziskave.
Keywords:verižna koda, rastrska krivulja, stiskanje podatkov, veriženje eksonov, Huffmanovo kodiranje
Place of publishing:Maribor
Publisher:[D. Podbregar]
Year of publishing:2013
PID:20.500.12556/DKUM-40791 New window
UDC:004.627:004.925(043)
COBISS.SI-ID:17105174 New window
NUK URN:URN:SI:UM:DK:C3RFEMN7
Publication date in DKUM:20.06.2013
Views:2469
Downloads:157
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FERI
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Secondary language

Language:English
Title:RASTER CURVE COMPRESSION WITH EXON CHAINING ALGORITHM
Abstract:In this master’s thesis we study the field of raster curve compression with chain codes. In algorithms that don’t necessarily code every shift (pixel, symbol) of the curve but introduce separate codes for frequent sequences of two or more shifts, we meet with the problem when it’s possible to divide these longer sequences to shorter subsequences in many different ways. For optimizing this problem, we borrow exon chaining algorithm which in the field of bioinformatics serves for locating (and comparing) unknown genes. With the help of statistical models we adapt the algorithm for raster curve compression. In this work we study different statistical models and their successfulness at compression. With the help of implemented software we outline advantages and disadvantages of this approach. At the end, we point out results for further research.
Keywords:chain code, raster curve, data compression, exon chaining, Huffman coding


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