Batmaz, Anıl Ufuk
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Name Variants
Batmaz, Anıl Ufuk
A.,Batmaz
A. U. Batmaz
Anıl Ufuk, Batmaz
Batmaz, Anil Ufuk
A.,Batmaz
A. U. Batmaz
Anil Ufuk, Batmaz
Batmaz, A.U.
Batmaz, Anil U.
Batmaz, Anil Ufuk K.
A.,Batmaz
A. U. Batmaz
Anıl Ufuk, Batmaz
Batmaz, Anil Ufuk
A.,Batmaz
A. U. Batmaz
Anil Ufuk, Batmaz
Batmaz, A.U.
Batmaz, Anil U.
Batmaz, Anil Ufuk K.
Job Title
Dr. Öğr. Üyesi
Email Address
Aubatmaz@khas.edu.tr
Main Affiliation
Mechatronics Engineering
Status
Former Staff
Website
ORCID ID
Scopus Author ID
Turkish CoHE Profile ID
Google Scholar ID
WoS Researcher ID
Scholarly Output
26
Articles
3
Citation Count
0
Supervised Theses
0
26 results
Scholarly Output Search Results
Now showing 1 - 10 of 26
Editorial Citation - Scopus: 0Preface(Association for Computing Machinery, Inc, 2021) Ortega, F.; Batmaz, Anıl Ufuk; Teather, R.; Bruder, G.; Piumsomboon, T.; Weyers, B.; Batmaz, A.U.; Johnsen, K.[No abstract available]Article Citation - WoS: 1Citation - Scopus: 1The Guided Evaluation Method: an Easier Way To Empirically Estimate Trained User Performance for Unfamiliar Keyboard Layouts(Academic Press Ltd- Elsevier Science Ltd, 2024) Mutasim, Aunnoy K.; Batmaz, Anıl Ufuk; Batmaz, Anil Ufuk; Mughrabi, Moaaz Hudhud; Stuerzlinger, WolfgangTo determine in a user study whether proposed keyboard layouts, such as OPTI, can surpass QWERTY in performance, extended training through longitudinal studies is crucial. However, addressing the challenge of creating trained users presents a logistical bottleneck. A common alternative involves having participants type the same word or phrase repeatedly. We conducted two separate studies to investigate this alternative. The findings reveal that both approaches, repeatedly typing words or phrases, have limitations in accurately estimating trained user performance. Thus, we propose the Guided Evaluation Method (GEM), a novel approach to quickly estimate trained user performance with novices. Our results reveal that in a matter of minutes, participants exhibited performance similar to an existing longitudinal study - OPTI outperforms QWERTY. As it eliminates the need for resource-intensive longitudinal studies, our new GEM thus enables much faster estimation of trained user performance. This outcome will potentially reignite research on better text entry methods.Conference Object Citation - WoS: 6Citation - Scopus: 7Performance Analysis of Saccades for Primary and Confirmatory Target Selection(Assoc Computing Machinery, 2022) Batmaz, Anıl Ufuk; Batmaz, Anil Ufuk; Mughrabi, Moaaz Hudhud; Stuerzlinger, WolfgangIn eye-gaze-based selection, dwell suffers from several issues, e.g., the Midas Touch problem. Here we investigate saccade-based selection techniques as an alternative to dwell. First, we designed a novel user interface (UI) for Actigaze and used it with ( goal-crossing) saccades for confirming the selection of small targets (i.e., < 1.5-2 degrees). We compared it with three other variants of Actigaze (with button press, dwell, and target reverse crossing) and two variants of target magnification (with button press and dwell). Magnification-dwell exhibited the most promising performance. For Actigaze, goal-crossing was the fastest option but suffered the most errors. We then evaluated goal-crossing as a primary selection technique for normal-sized targets (>= 2 degrees) and implemented a novel UI for such interaction. Results revealed that dwell achieved the best performance. Yet, we identified goal-crossing as a good compromise between dwell and button press. Our findings thus identify novel options for gaze-only interaction.Conference Object Citation - Scopus: 1When Anchoring Fails: Interactive Alignment of Large Virtual Objects in Occasionally Failing AR Systems(Springer Science and Business Media Deutschland GmbH, 2022) Batmaz, Anıl Ufuk; Stuerzlinger, W.Augmented reality systems show virtual object models overlaid over real ones, which is helpful in many contexts, e.g., during maintenance. Assuming all geometry is known, misalignments in 3D poses will still occur without perfectly robust viewer and object 3D tracking. Such misalignments can impact the user experience and reduce the potential benefits associated with AR systems. In this paper, we implemented several interaction algorithms to make manual virtual object alignment easier, based on previously presented methods, such as HoverCam, SHOCam, and a Signed Distance Field. Our approach also simplifies the user interface for manual 3D pose alignment in 2D input systems. The results of our work indicate that our approach can reduce the time needed for interactive 3D pose alignment, which improves the user experience. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.Conference Object Citation - Scopus: 10Exploring Discrete Drawing Guides To Assist Users in Accurate Mid-Air Sketching in Vr(Association for Computing Machinery, 2022) Türkmen, R.; Batmaz, Anıl Ufuk; Pfeuffer, K.; Barrera MacHuca, M.D.; Batmaz, A.U.; Gellersen, H.Even though VR design applications that support sketching are popular, sketching accurately in mid-air is challenging for users. In this paper, we explore discrete visual guides that assist users' stroke accuracy and drawing experience inside the virtual environment. We also present an eye-tracking study that compares continuous, discrete, and no guide in a basic drawing task. Our experiment asks participants to draw a circle and a line using three different guide types, three different sizes and two different orientations. Results indicate that discrete guides are more user-friendly than continuous guides, as the majority of participants preferred their use, while we found no difference in speed/accuracy compared to continuous guides. Potentially, this can be attributed to distinct eye-gaze strategies, as discrete guides led users to shift their eyes more frequently between guide points and the drawing cursor. Our insights are useful for practitioners and researchers in 3D sketching, as they are a first step to inform future design applications of how visual guides inside the virtual environment affect visual behaviour and how eye-gaze can become a tool to assist sketching. © 2022 ACM.Conference Object Citation - WoS: 0Citation - Scopus: 0Effect of Hand and Object Visibility in Navigational Tasks Based on Rotational and Translational Movements in Virtual Reality(Ieee Computer Soc, 2024) Batmaz, Anıl Ufuk; Saraç Stroppa, Mine; Batmaz, Anil Ufuk; Sarac, MineDuring object manipulation in Virtual Reality (VR) systems, realistically visualizing avatars and objects can hinder user performance and experience by complicating the task or distracting the user from the environment due to possible occlusions. Users might feel the urge to go through biomechanical changes, such as re-positioning the head to visualize the interaction area. In this paper, we investigate the effect of hand avatar and object visibility in navigational tasks using a VR headset. We performed two user studies where participants grasped a small, cylindrical object and navigated it through the virtual obstacles performing rotational or translational movements. We used three different visibility conditions for the hand avatar (opaque, transparent, and invisible) and two conditions for the object (opaque and transparent). Our results indicate that participants performed faster and with fewer collisions using the invisible and transparent hands compared to the opaque hand and fewer collisions with the opaque object compared to the transparent one. Furthermore, participants preferred to use the combination of the transparent hand avatar with the opaque object. The findings of this study might be useful to researchers and developers in deciding the visibility/transparency conditions of hand avatars and virtual objects for tasks that require precise navigational activities.Conference Object Citation - WoS: 0Citation - Scopus: 0EyeGuide & EyeConGuide: Gaze-based Visual Guides to Improve 3D Sketching Systems(Assoc Computing Machinery, 2024) Batmaz, Anıl Ufuk; Saraç Stroppa, Mine; Batmaz, Anil Ufuk; Stuerzlinger, Wolfgang; Asente, Paul; Sarac, MineVisual guides help to align strokes and raise accuracy in Virtual Reality (VR) sketching tools. Automatic guides that appear at relevant sketching areas are convenient to have for a seamless sketching with a guide. We explore guides that exploit eye-tracking to render them adaptive to the user's visual attention. EYEGUIDE and EYECONGUIDE cause visual grid fragments to appear spatially close to the user's intended sketches, based on the information of the user's eye-gaze direction and the 3D position of the hand. Here we evaluated the techniques in two user studies across simple and complex sketching objectives in VR. The results show that gaze-based guides have a positive effect on sketching accuracy, perceived usability and preference over manual activation in the tested tasks. Our research contributes to integrating gaze-contingent techniques for assistive guides and presents important insights into multimodal design applications in VR.Article Citation - WoS: 1Citation - Scopus: 2Evaluation of an Immersive Covid-19 Data Visualization(IEEE Computer Soc, 2023) Kaya, Furkan; Batmaz, Anıl Ufuk; Celik, Elif; Batmaz, Anil Ufuk K.; Mutasim, Aunnoy K.; Stuerzlinger, WolfgangCOVID-19 restrictions have detrimental effects on the population, both socially and economically. However, these restrictions are necessary as they help reduce the spread of the virus. For the public to comply, easily comprehensible communication between decision makers and the public is thus crucial. To address this, we propose a novel 3-D visualization of COVID-19 data, which could increase the awareness of COVID-19 trends in the general population. We conducted a user study and compared a conventional 2-D visualization with the proposed method in an immersive environment. Results showed that the our 3-D visualization approach facilitated understanding of the complexity of COVID-19. A majority of participants preferred to see the COVID-19 data with the 3-D method. Moreover, individual results revealed that our method increases the engagement of users with the data. We hope that our method will help governments to improve their communication with the public in the future.Conference Object Citation - WoS: 1Citation - Scopus: 1Effect of Grip Style on Peripersonal Target Pointing in Vr Head Mounted Displays(Ieee Computer Soc, 2023) Batmaz, Anil Ufuk; Batmaz, Anıl Ufuk; Turkmen, Rumeysa; Saraç Stroppa, Mine; Sarac, Mine; Machuca, Mayra Donaji Barrera; Stuerzlinger, WolfgangWhen working in Virtual Reality (VR), the user's performance is affected by how the user holds the input device (e.g., controller), typically using either a precision or a power grip. Previous work examined these grip styles for 3D pointing at targets at different depths in peripersonal space and found that participants had a lower error rate with the precision grip but identified no difference in movement speed, throughput, or interaction with target depth. Yet, this previous experiment was potentially affected by tracking differences between devices. This paper reports an experiment that partially replicates and extends the previous study by evaluating the effect of grip style on the 3D selection of nearby targets with the same device. Furthermore, our experiment re-investigates the effect of the vergence-accommodation conflict (VAC) present in current stereo displays on 3D pointing in peripersonal space. Our results show that grip style significantly affects user performance. We hope that our results are useful for researchers and designers when creating virtual environments.Editorial Citation - Scopus: 0Preface(Association for Computing Machinery, Inc, 2022) Sra, M.; Batmaz, Anıl Ufuk; Ortega, F.; Piumsomboon, T.; Weyers, B.; Peck, T.; Barrera, M.; Batmaz, A.U.[No abstract available]
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