Časovno frekvenčne vizualizacije posnetkov elektromiograma maternice

GROS, MITJA (author), Jager, Franc (mentor)

Cilj diplomske naloge je bil razvoj grafičnega orodja za vizualizacijo in označevanje posnetkov signalov elektrohisterograma (EHG). Razvito grafično orodje Visual Annotating and Analyzing (VisuAA) vizualizira signale EHG, njihove spektre, spektrograme, Wigner-Ville-jeve spektrograme, skalograme diskretnih valčnih transformacije (DWT) in skalograme zveznih valčnih transformacij (CWT). Spektrograme, Wigner-Ville-jeve spektrograme, skalograme DWT in skalograme CWT je možno vizualizirati kot 2D ali 3D grafe. Orodje mogoča shranjevanje rezultatov vizualizacij, pregledovanje, postavljanje, brisanje in urejanje kliničnih ter uporabniško definiranih oznak, pregledovanje in urejanje informacij posnetka ter zaglavne datoteke posnetkov, zapiskov o posnetku in shranjevanje izbranega dela posnetka. Grafično orodje VisuAA je bilo razvito v integriranem razvojnem okolju NetBeans. Med razvojem grafičnega uporabniškega vmesnika smo sledili Nielsenovim principom načrtovanje grafičnih uporabniških vmesnikov, medtem ko sta bila osnovni meri zmogljivosti učinkovitost in uporabnost razvitega grafičnega orodja. Grafično orodje VisuAA je namenjeno vizualizaciji in označevanju posnetkov podatkovne baze Term-Preterm EHG Database (TPEHGDB), prav tako pa tudi katerikolih drugih posnetkov signalov, ki so zapisani v formatu WFDB. Orodje VisuAA je praktično in koristno orodje za razvoj naprednih algoritmov in postopkov za analizo posnetkov EHG.

• Language: Slovenian
• Keywords: grafično orodje, elektrohisterogram, spekter, spektrogram, skalogram, Fouriereva transformacija, Wigner-Ville distribucija, diskretna valčna transformacija, zvezna valčna transformacija, grafični urejevalnik, podatkovna baza Term-Preterm EHG Database (TPEHGDB)
• Work type: Undergraduate thesis
• Organization: FRI - Faculty of Computer and Information Science
• Year: 2016
• PID: 20.500.12556/RUL-91179
• Publication date in RUL: 24.03.2017

Secondary language

• Language: English
• Title: Time-frequency visualizations of records of electromyogram of uterus

Abstract

The goal of the thesis was development of graphical tool for time-frequency visualization and annotating of records of electrohysterogram (EHG) signals. The developed graphical tool Visual Annotating and Analyzing (VisuAA) visualizes EHG signals, their spectra, spectrograms, Wigner-Ville spectrograms, discrete wavelet transform scalograms (DWT), and continuous wavelet transform scalograms (CWT). Spectrograms, Wigner-Ville spectrograms, DWT scalograms and CWT scalograms can be visualized as 2D or 3D graphs. The tool allows saving of visualization results, examination, setting, deleting and editing of clinical and user defined annotations, examining and editing of record information and record header file, record notes, and saving of selected part of the record. The graphic tool VisuAA was developed using NetBeans integrated development environment. During development of graphical user interface we followed Nielsen's principles of graphical user interface design, while the main performance measures were efficiency and usability of the developed graphical tool. Graphical tool is intended for visualization and annotation of records of Term-Preterm EHG Database (TPEHGDB) database, as well as of any other signal records which are stored in the WFDB format. The VisuAA tool is practical and useful toll for development of advanced algorithms and procedures to analyze EHG records.

• Keywords: Graphical tool, Electrohysterogram, Spectrum, Spectrogram, Scalogram, Fourier transform, Wigner-Ville distribution, Discrete wavelet transform, Continuous wavelet transform, Graphic editor, Term-Preterm EHG Database (TPEHGDB)