Abstract
TVs and monitors are among the most widely used displays in various environments. However, they have limitations in their physical display conditions, such as a fixed size/position and a rigid/flat space. In this paper, we suggest a new “Display in the Wild” (DIW) concept to overcome the aforementioned problems. Our proposed DIW system allows us to display a flexibly large screen on dynamic non-planar surfaces at an arbitrary display position. To implement our DIW concept practically, we choose a projector as the hardware configuration in order to generate a screen anywhere with different sizes. However, distortion occurs when the projector displays content on a surface that is dynamic and/or non-planar. Therefore, we propose a distortion correction method for DIW to overcome the aforementioned surface constraints. Since projectors are not capture devices, we propose using a depth camera to determine the distortions on the surfaces quickly. We also propose DIW-specific calibration and fast/precise correction methods. Our calibration method is constructed to detect the projection surface easily and quickly, and also allows our proposed system to accommodate the intrinsic parameters such as a display resolution and field of view. We accomplish a fast undistortion process of the projector by considering only surface boundary pixels, which enables our method to run in real time. In our comprehensive experiments, the proposed DIW system generates undistorted screens such as TVs and monitors on dynamic non-planar surfaces at an arbitrary display position with Unmanned Aerial Vehicles (UAVs) in a fast and accurate manner, demonstrating its usefulness in practical DIW scenarios.
Highlights
TVs and monitors are among the most widely used display devices in the industry and at home
We developed our Display in the Wild” (DIW) system based on the assumptions that: (i) the projector and depth camera are attached and fixed together; (ii) that the target surface projected by the projector is non-planar and dynamic; and (iii) that the depth camera is placed parallel to the longitudinal axis
For the hardware of DIW, we select the projector and depth camera in order to generate screen anywhere with different sizes and to correct the geometric distortion occurring on dynamic non-planar surfaces in real time
Summary
TVs and monitors are among the most widely used display devices in the industry and at home. To overcome the aforementioned problems of the existing methods and complete the DIW system with the proposed hardware, we propose: (i) a quick estimation method for geometric distortions from the projection; (ii) a fast distortion correction method; and (iii) a DIW-specific calibration between the projector and depth camera. We propose a new hardware configuration specialized for DIW that couples a projector with a depth camera for fast and reliable corrections to the distortions that can occur due to dynamic non-planar surfaces. To complete this DIW system, we propose software configurations that allow the DIW display to be deployed in real time applications.
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