Title: Collaborative drawing shared between mobile devices using MQTT

Authors: Kitae Hwang; In Hwan Jung; Jae Moon Lee

Addresses: School of Computer Engineering, Hansung University, 389, Samsundong, 2Ga, Sungbukgu, Seoul, South Korea ' School of Computer Engineering, Hansung University, 389, Samsundong, 2Ga, Sungbukgu, Seoul, South Korea ' School of Computer Engineering, Hansung University, 389, Samsundong, 2Ga, Sungbukgu, Seoul, South Korea

Abstract: This study introduces a case in which the DrawTok system, a mobile sharing system that enables more detailed communication and information sharing, is proposed and implemented. DrawTok shares texts and images sent by each mobile device, as well as freehand lines. There is no centralised server for managing shared data, and each mobile terminal stores the same information by using the MQTT protocol. In this study, DrawTok was implemented in Android and iOS devices respectively, and the performance was evaluated by measuring three different times: 1) the time it took for a free curve being drawn to be transmitted between terminals; 2) the drawing time of the recipient; 3) the time it took for a new participant to receive the previously drawn information.

Keywords: message queuing telemetry transport; MQTT; collaborative drawing; messenger; mobile devices; drawing sharing.

DOI: 10.1504/IJCVR.2022.125384

International Journal of Computational Vision and Robotics, 2022 Vol.12 No.5, pp.532 - 548

Received: 17 Jul 2021
Accepted: 19 Aug 2021
Published online: 07 Sep 2022 *

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