Intelligent Virtual Touch Screen Showing Finger Movement

Touch screen is the demanding technology in recent world. Most of the digital operations are performed using touch screens. These techniques improve the operating system of computers, laptops, cell phones, tablets pc, etc. and gives better performance of operation. Various complex operations are easily performed using touch screen. The touch screen operated on physical existence of contact on the touch surface. The touch screen operation required physical existence of touch event. A physical contact is essential for the operation of touch devices. The physical touch does not possible in those operations where the screen is far located away from users and no possibility of direct contact, or user have no time to go toward the screen. At this situation virtual touch screen give determinant solution regarding the operation. The virtual touch screen operates on the movement of finger without any physical existence. Webcam provides generated depth image which is used for identification and correction. Here proposed virtual touch screen which operated according to user's finger. The algorithm shows the image extraction and segmentation process. This work gives human computer interaction for movements of finger in virtual environments. Researches on haptic technology gives man machine interfaces. It shows interaction of human with computer. This technique implements the communication of man and machines. This technology gives the creation of real input and shows the interaction of human with computer (1). This communication is gives lot of advantages for developing modern technologies. Haptic techniques enhance the communication of man and machine. Mixed reality deals with addition of virtual object with real scene. The virtual reality changes the way for human operators interact with computer. Virtual reality provide working environment to interact with object. In virtual environment all objects are graphics model that follow no physical restriction.. The technology is camera based provides depth image information. The depth image is the image generated by camera. when finger comes in surrounded area tracking action performed and touch event detection occurred.. A virtual touch screen is implemented by means of image processing technique. When the object initially comes in suspected area of initial sense contact is provided by the touch receptor in the skin which provides information on the contact surface geometry. The haptic system must issue motor command that exerts a force on object this force uses for object manipulation and it is highly dependent on the type of grasping. Virtual touch screen recognize gesture of human finger and gives sense of touch on screen. II. TOUCH SCREEN IMPLIMENTATION This system is based on virtual wall concept. The virtual wall is the work surface in which object tracking actions are performed. The virtual wall is computational frame work of generic depended module for arbitrarily static scenes. The virtual wall consists of generic dependent virtual module responsible for computation on static scene within the cell. The interaction of finger is occurred within the wall without any physical contact surface in place; a virtual touch screen generates a virtual touch at a given distance from the camera and recognizes the touch events of a object on the screen. The implementation of virtual screen is obtained using a webcam and work surface. Here proposed a camera-based virtual touch screen, which derives the two dimensional (2D) position of finger image input from fixed camera and recognize the touch point (3). When a finger is interacting within the surface area a webcam tracks the finger and this touch is recognize by screen. The floating finger shape also sets the initial position for the finger tracking process. If snapshot taken is good enough for resolution user's finger could be also used for identification and verification purposes. The finger identity is already stored in the form of gesture. The gesture is for the image identification. The data regarding user's identity is stored in this engine. The snapshot of the object is then passed on to a recognition engine for identification. A 2D environment designer allows the user to define the geometry of the environment surfaces.