diplomsko delo
Gašper Derganc (Avtor), Peter Peer (Mentor)

Povzetek

Računalniško branje padavinskih grafov

Ključne besede

računalniški vid;digitalizacija;padavinski graf;meteorologija;padavine;računalništvo;univerzitetni študij;diplomske naloge;

Podatki

Jezik: Slovenski jezik
Leto izida:
Tipologija: 2.11 - Diplomsko delo
Organizacija: UL FRI - Fakulteta za računalništvo in informatiko
Založnik: [G. Derganc]
UDK: 004.93(043.2)
COBISS: 7054164 Povezava se bo odprla v novem oknu
Št. ogledov: 1070
Št. prenosov: 233
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Angleški jezik
Sekundarni naslov: [Computer reading of rainfall graphs]
Sekundarni povzetek: An algorithm aimed at automatic detection and digitalisation of the rainfall signal recorded by float based rain gauges on paper strip charts is presented. The algorithm consists of several steps that gradually lead to the desired goal. The rainfall signal is extracted from the digital image of the strip chart. By cooperation of moving average method and curve edge following method the rainfall curve is detected and uniquely determined - in each image column there is one single point representing the rainfall curve plotline. From the curve plotline high resolution rainfall time series is obtained. Beside image analysis techniques in the design of the algorithm, the mechanical features of the recording instrument have been taken into consideration. The availability of high resolution rainfall time series is required in many applications, including rainfall classifcation, analysis of extreme rainfall events, calibration of raifall-runoff models, weather prediction models and many research projects. The algorithm has been tesed on 58 pluviograph strip chart images. The comparison between the data obtained by the proposed algorithm and the official data from the Environmental Agency of the Republic of Slovenia shows that the algorithm usually accurately detects the rainfall curve and consequently an accurate rainfall time series is obtained. Since it is not always 100% reliable it should be used as a component of a system that would enable the inspection of the detected curve and when required it should also enable interactive changing of the parts needing correction.
Sekundarne ključne besede: computer vision;digitalisation;rainfall graph;meteorology;rainfall;computer science;diploma;
Vrsta datoteke: application/pdf
Vrsta dela (COBISS): Diplomsko delo
Komentar na gradivo: Univerza v Ljubljani, Fakulteta za računalništvo in informatiko
Strani: 52 str.
ID: 23868230