Browsing by Subject "Gesture"

Filter results by typing the first few letters
Now showing 1 - 3 of 3
  • Thumbnail Image
    ItemOpen Access
    A context aware approach for enhancing gesture recognition accuracy on handheld devices
    (2010) Yıldırım, Hacı Mehmet
    Input capabilities (e.g. joystick, keypad) of handheld devices allow users to interact with the user interface to access the information and mobile services. However, these input capabilities are very limited because of the mobile convenience. New input devices and interaction techniques are needed for handheld devices. Gestural interaction with accelerometer sensor is one of the newest interaction techniques on mobile computing. In this thesis, we introduce solutions that can be used for automatically enhancing the gesture recognition accuracy of accelerometer sensor, and as a standardized gesture library for gestural interaction on touch screen and accelerometer sensor. In this novel solution, we propose a framework that decides on suitable signal processing techniques for acceleration sensor data for a given context of the user. First system recognizes the context of the user using pattern recognition algorithm. Then, system automatically chooses signal ltering techniques for recognized context, and recognizes gestures. Gestures are also standardized for better usage. In this work, we also present several experiments which show the feasibility and e ectiveness of our automated gesture recognition enhancement system.
  • Thumbnail Image
    ItemOpen Access
    Muybridge-500: jog-shuttle as an operational mode of the digital
    (2018-07) Aksoy, Boran
    This thesis investigates the mode of operation of jog-shuttle as a dial in videotape editing technology and its way of operation. With the development of the technology, the upgrade culture turns the media devices into obsolete devices. Jog-shuttle as a physical dial which is found in the Bilkent Media Archaeology Lab is one of these devices. With the project, Muybridge-500 as an interactive installation, this thesis creates a rescue operation by transferring the mode of operation from analog to digital. This project by mimicking the device’s mode of operation without using it’s tactility, turns the jog-shuttle into a zombie media device. The recalling process saves the device from becoming obsolete and contributes to contemporary media by introducing a new mode of operation.The touchless operation by gestures of the new jog-shuttle is constructed with media archaeological gaze which demonstrates the non-linearity of the media. This knowledge transference takes again the analog device’s operation as a bodily action and forms a new mode of operation which affects the decision making process during the interaction.
  • Thumbnail Image
    ItemOpen Access
    The relationship between co-speech gesture production and macrolinguistic discourse abilities in people with focal brain injury
    (Elsevier, 2018) Akbıyık, S.; Karaduman, A.; Göksun, T.; Chatterjee, A.
    Brain damage is associated with linguistic deficits and might alter co-speech gesture production. Gesture production after focal brain injury has been mainly investigated with respect to intrasentential rather than discourse-level linguistic processing. In this study, we examined 1) spontaneous gesture production patterns of people with left hemisphere damage (LHD) or right hemisphere damage (RHD) in a narrative setting, 2) the neural structures associated with deviations in spontaneous gesture production in these groups, and 3) the relationship between spontaneous gesture production and discourse level linguistic processes (narrative complexity and evaluation competence). Individuals with LHD or RHD (17 people in each group) and neurotypical controls (n = 13) narrated a story from a picture book. Results showed that increase in gesture production for LHD individuals was associated with less complex narratives and lesions of individuals who produced more gestures than neurotypical individuals overlapped in frontal-temporal structures and basal ganglia. Co-speech gesture production of RHD individuals positively correlated with their evaluation competence in narrative. Lesions of RHD individuals who produced more gestures overlapped in the superior temporal gyrus and the inferior parietal lobule. Overall, LHD individuals produced more gestures than neurotypical individuals. The groups did not differ in their use of different gesture forms except that LHD individuals produced more deictic gestures per utterance than RHD individuals and controls. Our findings are consistent with the hypothesis that co-speech gesture production interacts with macro-linguistic levels of discourse and this interaction is affected by the hemispheric lateralization of discourse abilities.