Detection of grapes in natural environment using support vector machine classifier
Konferenční objektOmezený přístuppeer-reviewedpostprintSoubory
Datum publikování
2015
Vedoucí práce
Oponent
Název časopisu
Název svazku
Vydavatel
Vysoké učení technické v Brně
Abstrakt
The detection of grapes in real scene images is a serious task solved by researches dealing with precision viticulture. The detection of wine grapes of red varieties is a well mastered problem; however, the detection of white varieties still poses challenges. In this paper, four detectors for white wine grapes detection are introduced and evaluated. The detectors are based on support vector machines and they differ in kernels and features used for image representation. Namely, the pixel intensities and histogram of oriented gradients (HOG) are used for the representation of images. Radial basis functions and linear kernels are applied. The detectors based on the HOG feature have proven to be very efficient. Their average recognition accuracy by cross-validation was 98.23% and 98.96%, respectively. Furthermore, they show very good performance for other cross-validation metrics. Their average precision is 0.978 and 0.985, respectively; their average recall is 0.987 and 0.994, respectively. The detectors were also verified on test sets with positive samples affected by rotation distortion, and moreover on image sections of a real scene photo, in both cases with good results. Moreover, the detectors do not require any artificial lighting and they can work under different light conditions.
Rozsah stran
p. 143-150
ISSN
1803-3814
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Projekt
Zdrojový dokument
Mendel 2015: 21st International Conference on Soft Computing
Vydavatelská verze
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Práce není přístupná
Název akce
Mendel´15: 21st International Conference on Soft Computing (23.06.2015 - 25.06.2015)
ISBN
978-3-319-19823-1
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Klíčová slova
grape detection, precision viticulture, real scene images, image processing, support vector machines, detekce hroznového vína, precizní vinohradnictví, reálný obraz, zpracování obrazu, support vector machines