Subbareddy Darukumalli - Academia.edu (original) (raw)
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Papers by Subbareddy Darukumalli
Novel forms of 3D visualization are rising, where users no longer need to rely on additional equi... more Novel forms of 3D visualization are rising, where users no longer need to rely on additional equipment, such as special glasses or head gears, in order to properly perceive the visualized content. One particularly notable type of these systems are light field displays. User experience on such glasses-free displays is just as important as on any visualization technology, and thus researchers conduct experiments to evaluate it. While there are standardized techniques for conventional 2D and stereoscopic 3D displays, at the time of this paper, there are no standards for measuring the user’s Quality of Experience on these displays. In this paper, we discuss the current state of experimental methodologies used to assess subjective perceived quality on light field displays. The discussion also calls attention to the special considerations which are typical for such 3D visualizations but not present in different systems. Keywords—Quality of Experience; Light Field Display; Perceived qualit...
2017 Ninth International Conference on Quality of Multimedia Experience (QoMEX), May 1, 2017
The smooth motion parallax of light field displays is one of the most critical enablers of the gl... more The smooth motion parallax of light field displays is one of the most critical enablers of the glasses-free autostereoscopic 3D experience. This smoothness originates from an acceptable degree of angular resolution, which is derived from the number of views visualized in the given field of view. However, if human observers view the content without any movement, the requirement for angular resolution can be lower. In this paper, we introduce the results of a subjective quality assessment of visual content displayed on a light field cinema. The angular resolution of the content was different in each test condition, and participants were located in fixed positions during the experiment.
2016 International Conference on 3D Imaging (IC3D), 2016
Fast and accurate in-line areal surface topography measuring instruments are required to control ... more Fast and accurate in-line areal surface topography measuring instruments are required to control the quality of microscale manufactured components, without significantly slowing down the production process. Full-field areal optical surface topography measurement instruments are promising for in-line or on-machine measurement applications due to their ability to measure quickly, to access small features and to avoid surface damage. This paper presents the development and integration of a compact optical focus variation sensor for on-machine surface topography measurement mounted on to a hybrid ultraprecision machine tool. The sensor development is described and a case study involving the on-machine dimensional measurement of the depth of hydrophobic microscale features, including microchannels and micro-dimples, is presented. Comparisons of results between the on-machine measurements obtained by the developed sensor and a desktop focus variation microscope are presented and discussed...
Novel forms of 3D visualization are rising, where users no longer need to rely on additional equi... more Novel forms of 3D visualization are rising, where users no longer need to rely on additional equipment, such as special glasses or head gears, in order to properly perceive the visualized content. One particularly notable type of these systems are light field displays. User experience on such glasses-free displays is just as important as on any visualization technology, and thus researchers conduct experiments to evaluate it. While there are standardized techniques for conventional 2D and stereoscopic 3D displays, at the time of this paper, there are no standards for measuring the user’s Quality of Experience on these displays. In this paper, we discuss the current state of experimental methodologies used to assess subjective perceived quality on light field displays. The discussion also calls attention to the special considerations which are typical for such 3D visualizations but not present in different systems. Keywords—Quality of Experience; Light Field Display; Perceived qualit...
2017 Ninth International Conference on Quality of Multimedia Experience (QoMEX), May 1, 2017
The smooth motion parallax of light field displays is one of the most critical enablers of the gl... more The smooth motion parallax of light field displays is one of the most critical enablers of the glasses-free autostereoscopic 3D experience. This smoothness originates from an acceptable degree of angular resolution, which is derived from the number of views visualized in the given field of view. However, if human observers view the content without any movement, the requirement for angular resolution can be lower. In this paper, we introduce the results of a subjective quality assessment of visual content displayed on a light field cinema. The angular resolution of the content was different in each test condition, and participants were located in fixed positions during the experiment.
2016 International Conference on 3D Imaging (IC3D), 2016
Fast and accurate in-line areal surface topography measuring instruments are required to control ... more Fast and accurate in-line areal surface topography measuring instruments are required to control the quality of microscale manufactured components, without significantly slowing down the production process. Full-field areal optical surface topography measurement instruments are promising for in-line or on-machine measurement applications due to their ability to measure quickly, to access small features and to avoid surface damage. This paper presents the development and integration of a compact optical focus variation sensor for on-machine surface topography measurement mounted on to a hybrid ultraprecision machine tool. The sensor development is described and a case study involving the on-machine dimensional measurement of the depth of hydrophobic microscale features, including microchannels and micro-dimples, is presented. Comparisons of results between the on-machine measurements obtained by the developed sensor and a desktop focus variation microscope are presented and discussed...