Daeil Seo

Webizing human interface devices for virtual reality

Recently virtual reality (VR) technology has been widely distributed, but VR interaction devices supported in web environments are limited compared with in the traditional VR environment. In the traditional VR environment, the Virtual-Reality Peripheral Network (VRPN) provides a device-independent and network-transparent interface. To promote the development of WebVR applications with various interaction devices, a method like VRPN is required in the web environment as well. In this paper, we propose a webizing method for human interface devices and related events that serves as either VRPN messages or HTML DOM events to deal with interaction events.

Webizing Mixed Reality for Cooperative Augmentation of Life Experience

Most mixed and augmented reality (MAR) applications require the target to be specified a priori and need the same MAR applications among cooperative users. Thus, most existing MAR applications are hard to share MAR scenes or contents without prior agreement for cooperative works. To address this problem, we propose a webizing method that redesigns component relationship of MAR content using an episode as a container of user interactions for sharing life experience and activities. The MAR scene can be gradually developed by multiple participants of the episode. Our examples demonstrate MAR contents can be cooperatively produced, accumulated and consumed like Web 2.0, a digital prosumption that has proven effective in dramatic expansion of Web contents.

Webizing 3D contents for super multiview autostereoscopic displays with varying display profiles

With the development of optic technologies, various forms of stereoscopic 3D displays such, as 3DTVs, head-mounted displays, multi-view autostereoscopic displays, and super multi-view autostereoscopic displays, have emerged. However, displays have various characteristics and different implementations and the supply of content and rendering applications cannot keep up with the development speed of the displays. The content production varies and depends on the characteristics of a specific display. To reuse content with various types of autostereoscopic 3D displays with different characteristics, the content or rendering application should be modified for other displays. To resolve these problems, we propose a webizing method for the content and display of super multi-view autostereoscopic systems in the Web environment. The proposed method renders not only 3D autostereoscopic model by WebGL but also existing web pages described by HTML on the Web as super multi-view autostereoscopic 3D system content on the Web. In addition, we propose a JavaScript interface for describing displays to allow developers to access the profile and functionalities of displays through web browsers. This interface helps rendering applications generate monoscopic 3D or N multi-view autostereoscopic 3D content based on a display profile from the same source, also known as one-source multi-use. We present an example of super multi-view autostereoscopic content and display it in a product design conference on the Web using a prototype implementation to verify the usefulness of our approach.

Points of Interest Density Based Zooming Interface for Map Exploration on Smart Glass

Smart glass devices have become popular in our daily lives, and many people have applied its advantages to their application fields. In particular, smart glass has the advantage of receiving desired information by maintaining their context of the real world without dispersing their attention. Smart glass is also widely used to obtain information about points of interest with map interfaces. However, smart glass has an insufficient user interface with which to interact with its map applications via the smart glass. This problem restricts the map’s ability to provide specific functions and makes users feel constrained compared to handheld devices. In this paper, we focus on a map exploration method for smart glass to solve the limitations of map interaction via the smart glass. We propose an interaction design with zooming interface based on region’s point of interest density. This approach is intended for a region search without any other interaction tools. Users search and browse their regions of interest with the smart glass by using the proposed method.

Webized 3D content streaming system for autostereoscopic 3D displays

Various types of video content using 360° panoramic and virtual reality video have become widespread. However, wearing eyewear as well as a head-mounted display is still a burden of experiencing in 3D content. Glasses-free (i.e. autostereoscopic) super multi-view (SMV) 3D displays provide more comfortable 3D experience but have limited types of content. To provide enriched SMV content, we propose a webizing method for SMV 3D streaming content with time synchronization. The proposed method provides SMV 3D streaming content that contains real-world objects, 3D models, and HTML DOM elements through HTML documents. The method defines custom CSS extensions for transition and animation effects of the SMV 3D streaming content. We present an example of SMV 3D streaming content using a prototype implementation on the web to verify the usefulness of our approach.

Webizing collaborative interaction space for cross reality with various human interface devices

Recently, web based cross reality (XR) concept embracing virtual reality (VR), augmented reality (AR), and mixed reality (MR) technology has emerged, but user interaction devices for collaborative work supported in web environments are limited. The Virtual-Reality Peripheral Network (VRPN) in the traditional VR environment provides a device-independent and network transparent interface. To promote the development of web based XR applications, a common method is required to support a collaborative interaction space in VR, AR, and MR contexts according to the user environment and various interaction devices that can be used without limitation of XR content in web based XR environments as well. In this paper, we propose a webizing method for a collaborative interaction space that provides user authentication and manages user sessions in XR environments. In addition, the webizing method supports human interface devices and related events via an interaction adaptor that delivers events based on user session and converts event messages according to XR content types such as VRPN messages, X3D sensor data, and HTML DOM events to deal with interaction events.

Webizing Virtual Reality-Based Interactive Interior Design System

The virtual reality (VR)-based interior design systems have the advantage of cost reductions and can support multiple users without spatial or temporal constraints. Recently, various head-mounted display (HMD) applications for VR using smartphones have become popular, and WebVR technology has been introduced to implement VR applications on the web. However, WebVR is still its early stages for use in the development of VR applications. Interaction methods for WebVR are limited compared to traditional VR development environments. In this paper, we propose an interactive VR system for interior design based on web technologies with a system that supports 3D and VR views with various interaction methods on the web.

Webizing Interactive CAD Review System Using Super Multiview Autostereoscopic Displays

A glasses-free super multi-view display has emerged alongside the development of optical technologies. However, the display is not yet widely used because its content remains in the early stages of only image or video without user interaction. Expanding the display market would require content that can take advantage of the display. In this paper, we propose a webized interactive CAD review system that uses super multi-view autostereoscopic displays with an application facilitating the popularization of super multi-view displays. The content for the display is described by web technologies such as HTML5, CSS, and JavaScript. The proposed system renders the content through a web browser and handles user interactions via JavaScript. A user can view autostereoscopic images with a sense of depth through motion parallax using the display and control the content remotely using gesture interaction devices. We present an example of content using a prototype implementation to verify our approach’s usefulness.

Webized augmented reality mashup for legacy things

Although internet of things (IoTs) devices are attractive for making our life smarter, we need to replace existing equipment with IoT devices to connect, and this presents a cost problem. We propose a webized augmented reality mashup for legacy things that connects existing web services with things without the additional costs of replacing existing equipment.

Development and Evaluation of Mobile Tour Guide Using Wearable and Hand-Held Devices

With the popularization of wearable devices, people who are using multiple mobile devices are increasing; a tourist uses a hand-held device, a wearable device, or both to obtain tour information. However, most mobile tour guides provide tour information with little consideration of their hand-held and wearable characteristics. In addition, tour guides that run on multiple mobile devices do not share their touring context. Therefore, tourists have to input their intention separately on each device. To alleviate these problems, we propose a mobile tour guide system that shares the touring context between hand-held and wearable devices, and presents tour information based on the capabilities and usage pattern of the devices. The system guides tourists by compensating the weaknesses of the devices, and also minimizes user interaction between the system and tourists.