Previsualization, previs, is essential for film production, allowing cinematographic experiments and effective collaboration. However, traditional previs methods like 2D storyboarding and 3D animation require substantial time, cost, and technical expertise, posing challenges for indie filmmakers. We introduce CollageVis, a rapid previsualization tool using video collages. CollageVis enables filmmakers to create previs through two main user interfaces. First, it automatically segments actors from videos and assigns roles using name tags, color filters, and face swaps. Second, it positions video layers on a virtual stage and allows users to record shots using mobile as a proxy for a virtual camera. These features were developed based on formative interviews by reflecting indie filmmakers’ needs and working methods. We demonstrate the system’s capability by replicating seven film scenes and evaluate the system’s usability with six indie filmmakers. The findings indicate that CollageVis allows more flexible yet expressive previs creation for idea development and collaboration.

Working out alone at the gym often lacks the quality and intensity of exercises compared to the training session with a personal trainer. To narrow this gap, we introduce TrainerTap, which simulates the personal trainer's presence during solitary weightlifting workouts. TrainerTap replicates the trainer's manual interventions of tapping the trainee's body parts to capture their attention on target muscles and provides auditory guidance to support executing the movements at a consistent tempo.

Online fitness video tutorials are an increasingly popular way to stay fit at home without a personal trainer. However, to keep the screen playing the video in view, users typically disrupt their balance and break the motion flow --- two main pillars for the correct execution of yoga poses. While past research partially addressed this problem, these approaches supported only a limited view of the instructor and simple movements. To enable the fluid execution of complex full-body yoga exercises, we propose FlowAR, an augmented reality system for home workouts that shows training video tutorials as always-present virtual static and dynamic overlays around the user. We tested different overlay layouts in a study with 16 participants, using motion capture equipment for baseline performance. Then, we iterated the prototype and tested it in a furnished lab simulating home settings with 12 users. Our results highlight the advantages of different visualizations and the system's general applicability.

The COVID-19 pandemic has impacted education, especially in STEAM subjects, such as Interaction Prototyping (a course involving physical computing), where physical practice is crucial. There have been studies to introduce virtual environments in STEAM education before the pandemic. However, the non-face-to-face education paradigm that emerged after the outbreak of the epidemic further increased this necessity. In this paper, we propose virtual reality applications for interaction prototyping remote education that provide an intuitive and safe practice environment for students. First, we summarize the flow of the interaction prototyping class and explore the difficulties in the class before and after COVID-19 through expert interviews. Based on this, we derive design considerations when converting the background of the interaction prototyping class from offline to the virtual environment. Finally, we propose four possible interaction scenarios that can provide students with an immersive experience: realistic theory class, 3D library, circuit assembly, and mixed reality practice.

Virtual Reality experiences, such as games and simulations, typically support the usage of bimanual controllers to interact with virtual objects. To recreate the haptic sensation of holding objects of various shapes and behaviors with both hands, previous researchers have used mechanical linkages between the controllers that render adjustable stiffness. However, the linkage cannot quickly adapt to simulate dynamic objects, nor it can be removed to support free movements. This paper introduces GamesBond, a pair of 4-DoF controllers without physical linkage but capable to create the illusion of being connected as a single device, forming a virtual bond. The two controllers work together by dynamically displaying and physically rendering deformations of hand grips, and so allowing users to perceive a single connected object between the hands, such as a jumping rope. With a user study and various applications we show that GamesBond increases the realism, immersion, and enjoyment of bimanual interaction.