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Hand gesture recognition

Authors: Can, Bekir;

Hand gesture recognition

Abstract

In this master study, the purpose is to classify different hand gestures in our database. The database consists of 6 types of gesture class and each gesture class has 50 hand images. Each type of gesture symbolizes a number from 0 to 5. The hand gesture recognition system consists of four main stages: Image enhancement, segmentation, feature extraction and classification. In the image enhancement stage, median filter is used to get rid of high frequency components. After the image enhancement stage, hand region in the image needs to be separated for the next stage. In order to extract hand data from the image, regions that are similar to skin color are found using a color threshold process, and then contour data of the hand which will represent the hand region is selected by finding the longest inner contour of the longest outer contour in the existing regions that are similar to skin color. In the feature extraction stage, useful features for the classification stage are obtained using of the shape features such as convexity defects of the contour. Classifier of the system consists of simple conditional expressions and intersection arc. Depending on the features, the classifier decides which gesture corresponds to the input of the system. The system has a ninety nine percent success rate.

Bu yüksek lisans çalışmasında amaç veri tabanımızdaki farklı el işaretlerinin sınıflandırılmasıdır. Veri tabanı 6 çeşit el işareti sınıfından oluşmaktadır ve her bir işaret sınıfı 50 el görüntüsüne sahiptir. Her bir işaret 0 'dan 5 'e kadar bir sayıyı simgelemektedir. El işareti tanıma sistemi dört ana kısımdan oluşmaktadır: Görüntü geliştirme, bölütleme, öznitelik çıkarma ve sınıflandırma. Görüntü geliştirme kısmında, median filtre yüksek frekanslı bileşenlerden kurtulmak için kullanılır. Görüntü geliştirme kısmından sonra, görüntüdeki el alanı sonraki kısım için ayrılması gerekmektedir. Görüntüden el bilgisini çıkartmak için, el cildi benzeri bölgeler renkli eşikleme işlemi kullanılarak bulunur ve el bölümünü temsil edecek elin kontür bilgisi mevcut el cildi benzeri bölgelerde en uzun dış konturün en uzun iç konturü seçilerek bulunur. Öznitelik çıkarma kısmında, sınıflandırma için işe yarar öznitelikler konturün dışbükeylik defekleri gibi biçim özellikleri kullanılarak elde edilir. Sistemin sınıflandırıcısı basit koşulsal ifadeler ve kesişim yayından oluşur. Özniteliklere bağlı olarak sınıflandırıcı sistemin girişiyle hangi işaretin uyuştuğuna karar verir. Sistem yüzde doksan dokuz başarı oranına sahiptir.

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Keywords

Elektrik ve Elektronik Mühendisliği, Computer vision, Digital image processing, Electrical and Electronics Engineering

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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Average