Abstract: This paper proposes a new desktop virtual reality system that uses only a single camera to track and calculate the distance between a viewer’s eyes and the camera in order to produce proper viewing images. The system estimates a distance between the eyes and the camera by measuring the distance between irises of left and right eyes. The system has the initial step to calibrate distance between left and right irises of the viewer and use these irises as the reference points to find the distance between the eyes and the screen. However, since this system uses only two eyes, it cannot cope with the rotation on the axes parallel to the camera. The FaceAPIlibrary [1] is employed as the orientation estimator since the FaceAPI uses the sophisticating image processing algorithm to detect and measure human face orientation and distance with respect to the camera. However, since not all human faces have equal size, the estimated distance between a human face and camera from the FaceAPI library i

• Publication Date: 07-Apr-2013
• DOI: 10.15224/978-981-07-5939-1-54
• Views: 0
• Downloads: 0

Abstract: In this paper an approach is proposed to derive an optimal layout of a Bengali Virtual Keyboard and hence forth seeking the desirable placement of all the keys in that layout within the constraints of space and the key size, thereby seeking to improve the text entry rate for an individual with normal human perception abilities. The approach is partly segmented in identifying the initial layout to work with, obtained through a design space exploration technique, which essentially forms an input to the Optimal Letter Arrangement algorithm. The algorithm involves a pool of keyboards to start with for each of which the theoreticaltext entry rate is evaluated based on Fitts’ hand movement law as the fitness function. The fit keyboards make a hop to the next generation after which they go through a randomization phase in letter arrangement and subsequent fitness evaluation. The unfit keyboards inherit a known layout and make the subsequent hop. A keyboard stops the procedure the moment its t

• Publication Date: 07-Apr-2013
• DOI: 10.15224/978-981-07-5939-1-53
• Views: 0
• Downloads: 0