Design of Authoring Tool for Static and Dynamic Projection Mapping Sang-Joon Kim 1 , Nammee Moon 2 , Min Hong 3 , Gooman Park 1 and Yoo-Joo Choi 4,* 1 Seoul National University of Science and Technology, 172 Gongneung-dong, Nowon-gu, Seoul, Korea 2 Hoseo University 165 Sechul-ri, Baebang-eup, Asan-si, Chungcheongnam-do, Korea 3 Soonchunhyang University, 336-745, Asan-si, Chungcheongnam-do, Korea 4 Seoul Media Institute Technology, 661 Deungchon-dong, Gangseo-gu, Seoul, Korea  Corresponding Author: Yoo-Joo Choi. Email: yjchoi@smit.ac.kr Received: 30 June 2020; Accepted: 22 August 2020 Abstract: This study introduces the design details of a tool to create interactive projection-mapping content in a convenient manner. For the proposed tool design, a homography-based camera–projector calibration method was applied with the use of red–green–blue-depth images from a Kinect V2 sensor that did not require accurate camera calibration prerequisites. In addition, the proposed tool simulta- neously achieved static projection mapping that projected the image content onto a fixed object, and dynamic projection mapping that projected the image content onto a user ’ s body, by tracing the moving user. To verify the effectiveness of the proposed content-creation tool, users with no programming capabilities were employed to create contents that were projected onto various objects in fixed posi- tions and a user ’ s body in various poses, thereby analyzing the tool’ s complete- ness. Moreover, the projection accuracy was analyzed at different depth positions, and the projection-mapping accuracy was verified with the use of the proposed method. Keywords: Dynamic projection mapping; camera–projector calibration; Kinect projection mapping; content authoring tool 1 Introduction The evolution of augmented reality (AR) technology has led to its widespread use in various fields, e.g., medicine, industry, education, mobile games, and entertainment [1–3]. AR employs a computer graphic technique that uses an integrated display that matches an object in the real world to a different object in a virtual world [4]. There are multiple AR variants. For example, one variant may show the augmented information on a monitor or a smartphone. Another variant may display the augmented information via a head-mounted display (HMD) or glasses [5,6]. These AR variants have disadvantages. First of all, they only allow a single user to experience a virtual world. Second, they restrict the space within which the user can move and motion owing to the device. Third, they easily cause diminished concentration, nausea, or dizziness. Therefore, interest in spatial augmented reality (SAR) has been increasing. SAR is a projection-mapping technique that enables multiple users to experience virtual content simultaneously, without the need to wear This work is licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Computers, Materials & Continua DOI:10.32604/cmc.2020.012437 Article ech T Press Science