• Manasa Srinivasa H S
• Laxmi Tyapi
• Suresha H S

Human beings communicate with systems like computer desktops, handheld devices like remote control televisions, video games and many more. From long years back computers and many devices are operated by using keyboard and mouse as inputs but now the recent trend on basis of gesture recognistion.By using gesture recognition algorithm or method , devices like computer systems, televisions and video games and many are controlled by hand gestures. In this paper, the input image is taken from the web camera which is colour image, by using background subtraction method the coloured image is converted into threshold image which is black and white image. Next the contour, convex hull, convexity defects are calculated. Finally the planned algorithm counts the number of fingers present in the image.

Handheld devices, wired devices, computer Systems, Gesture recognition, background subtraction.

"Online Hand Gesture Recognition Using OpenCV", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.2, Issue 5, page no.1635-1637, May-2015, Available :http://www.jetir.org/papers/JETIR1505054.pdf

"Online Hand Gesture Recognition Using OpenCV", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.2, Issue 5, page no. pp1635-1637, May-2015, Available at : http://www.jetir.org/papers/JETIR1505054.pdf