HideOut

Abstract

a b c d e f Figure 1.HideOut is a mobile projector-based system that uses hidden markers (c,f) to map projected imagery onto tangible objects and surfaces (b,e) such as storybooks (a) and board games (d). ABSTRACTHideOut is a mobile projector-based system that enables new applications and interaction techniques with tangible objects and surfaces. HideOut uses a device mounted camera to detect hidden markers applied with infrared-absorbing ink. The obtrusive appearance of fiducial markers is avoided and the hidden marker surface doubles as a functional projection surface. We present example applications that demonstrate a wide range of interaction scenarios, including media navigation tools, interactive storytelling applications, and mobile games. We explore the design space enabled by the HideOut system and describe the hidden marker prototyping process. HideOut brings tangible objects to life for interaction with the physical world around us.

InformationSense

“…It (3) preserves the "cloth-feel, " (4) provides an undistracted visual output, (5) facilitates a large projection surface and (6) is scalable. The utilized markers are created from persistent materials and thus, in contrast to markers based on infrared ink [45], support long term use. Although not as precise and robust as other more complex and expensive solutions (e.g., [27,28]), our tracking approach can be applied by practitioners to design low cost physically deformable displays that do not decrease in tracking performance over time.…”

“…Results show that even with one layer the color of the cloth is usable for projections but still provides a very high contrast image in the IR spectrum. With two layers the contrast in the IR spectrum is still high compared to the results for IR-absorbing ink provided by Willis et al [45] Thus, two layers provide a good trade-off between a close to white color of the projection surface and a still high contrast in the IR spectrum which is suitable for marker tracking. • Trade-off 3 -marker size vs. marker detection confidence: The trackable minimal segment size is a crucial factor for a suitable projection mapping.…”

“…Therefore, only a rough approximation of the surface and limited interaction is supported (e.g., no rotation). With HideOut, Willis et al [45] presented a system based on the tracking of AR-markers printed with IR-absorbing ink. However, the approach is not applicable for tracking deformations.…”

Tangible Multi-card Projector-Based Interaction with Physics

“…Wu et al proposed MagicPAPER [13] based on multi-sensors, such as Air-Bar, Kinect, LeapMotion and camera, using tangible objects like toothbrushes and wooden blocks to interact on kraft paper. As paper markers also belong to tangible objects and can be well applied in reality, some existing work, such as [7,1,11], explored tangible interaction based on tracking paper markers without many sensors. In particular, Willis et al [11] proposed mobile interaction with tangible objects and surfaces by detecting IR hidden markers.…”

“…As paper markers also belong to tangible objects and can be well applied in reality, some existing work, such as [7,1,11], explored tangible interaction based on tracking paper markers without many sensors. In particular, Willis et al [11] proposed mobile interaction with tangible objects and surfaces by detecting IR hidden markers. However just position information is extracted from the tracked markers to drive the projected content.…”