DocumentCode :
270726
Title :
Predictions of cloud movements and the sun cover duration
Author :
Radovan, Aleksander ; Ban, ZÌŒeljko
Author_Institution :
Univ. of Appl. Sci. Velika Gorica, Velika Gorica, Croatia
fYear :
2014
fDate :
26-30 May 2014
Firstpage :
1210
Lastpage :
1215
Abstract :
In order to optimally control the energy flow in the microgrid, consist of several renewable energy sources, including solar photo electric system and storage system, it is essential to know availability of the specific energy source. So, it is necessary to determine the exact moment of the Sun shading the by clouds as well as shadow duration. These parameters could be obtained by cloud movement tracking system. The cloud movement tracking system is based on the detection of cloud edges and determining angular velocity vector which describes the speed and direction of cloud movements. As clouds change their shapes, directions and speeds, the position of every cloud is determined according to his centroid. This paper deals with cloud recognition and movements analysis based on video stream obtained by camera with resolution 1920×1080 pixels and refresh rate of 25 frames per second. The clouds detection is based on the HSV (Hue-Saturation-Value) color model in combination with mathematical morphological operations of erosion and dilation. Video and image processing was performed by application developed in Java programming language using the JavaCV library that offers the functionalities of computer vision.
Keywords :
Java; atmospheric techniques; clouds; computer vision; edge detection; erosion; geophysical image processing; image colour analysis; object detection; object tracking; shape recognition; video cameras; video streaming; HSV color model; Hue-Saturation-Value; Java programming language; JavaCV library; angular velocity vector; cloud edge detection; cloud movement prediction; cloud movement tracking system; computer vision; dilation mathematical morphological operation; energy flow optimal control; erosion mathematical morphological operation; image processing; microgrid; renewable energy source; solar photo electric system; sun cover duration; video processing; video stream; Angular velocity; Clouds; Color; Image color analysis; Image edge detection; Shape; Vectors; HSV; Sun cover duration; centroid; cloud movement prediction; renewable energy sources;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Information and Communication Technology, Electronics and Microelectronics (MIPRO), 2014 37th International Convention on
Conference_Location :
Opatija
Print_ISBN :
978-953-233-081-6
Type :
conf
DOI :
10.1109/MIPRO.2014.6859752
Filename :
6859752
Link To Document :
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