Integracija metode za kompresiju slika bez gubitaka zasnovane na klasifikaciji i miješanju funkcija predviđanja u normu DICOM

master's thesis

• Title (english): Integration of the Lossless Classification and Blending Predictive Image Compression into DICOM Standard
• Author: Matej Bohač
• Mentor: Josip Knezović (mentor)
• Committee member: Josip Knezović (predsjednik povjerenstva)
• Committee member: Hrvoje Mlinarić (član povjerenstva)
• Committee member: Igor Čavrak (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2017-07-18, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Computing

Abstract

U ovom radu integrirana je podrška za medicinske slike u formatu DICOM unutar sustava za medicinsku dijagnostiku u pokretu MIDOM. Sustav MIDOM dosad nije bio kompatibilan sa normom DICOM, široko prihvaćenom normom za medicinske slike. Koder CBPC, komponenta MIDOM-a za kompresiju slika bez gubitaka, jedino je mogao komprimirati slike u formatu PGM. Ovaj rad opisuje potrebne modifikacije kodera CBPC da bi mu se omogućila kompresija slika i u formatu DICOM. Prvo je dan pregled relevantnih dijelova norme DICOM i komponenata sustava MIDOM. Zatim su opisane potrebne programske modifikacije izvedene u koderu CBPC. Dodatno, u radu je opisano i proširenje kodera kojim mu je dodana metoda kodiranja duljine niza kao pomoćna metoda za postizanje bolje kompresije te su prikazani rezultati i analiza postignutih stupnjeva kompresije. Na kraju je ukratko opisana integracija modificiranog kodera u sustav MIDOM.

Abstract (english)

In this thesis, support for medical images in DICOM format was integrated in MIDOM, system for medical diagnostics on the move. The MIDOM system up until now wasn't compatible with the DICOM standard, widely accepted standard in medical imaging. CBPC coder, MIDOM component for lossless image compression, supported only coding of images in PGM format. This theses details required modifications of CBPC coder to enable him compression of DICOM images. First part of the thesis outlines relevant parts of DICOM stanard and components of the MIDOM system. Following this, necessary software modifications performed on CBPC coder are described. This thesis additionally illustrates extension of CBPC coder with supplementary run-length coder for facilitating better image compression. Results and analysis of achieved compression ratios for this method are also presented. At the end, integration of modified CBPC coder in the MIDOM system is shortly described.

• Keywords: Medicinske slike; MIDOM; PACS; DICOM objekti; DICOM atributi; prijenosna sintaksa; kodiranje greške predviđanja; kodiranje duljine niza; stupanj kompresije
• Keywords (english): Medical imaging; MIDOM; PACS; DICOM objects; DICOM attributes; Transfer Syntax; prediction error encoding; run-length encoding; compression ratio
• Language: croatian
• URN:NBN: urn:nbn:hr:168:332249
• Study programme: Title: Computing; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka računarstva (magistar/magistra inženjer/inženjerka računarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2019-03-13 19:11:21