We present a practical implementation of a variation of the Turing Test for realistic computer graphics. The test determines whether virtual representations of objects appear as real as genuine objects. Two experiments were conducted wherein a real object and a similar virtual object is presented to test subjects under specific restrictions. A criterion for passing the test is presented based on the probability for the subjects to be unable to recognise a computer generated object as virtual. The experiments show that the specific setup can be used to determine the quality of virtual reality graphics. Based on the results from these experiments, future versions of the Graphics Turing Test could ease the restrictions currently necessary in order to test object telepresence under more general conditions. Furthermore, the test could be used to determine the minimum requirements to achieve object telepresence.

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Human--building interaction (HBI) is converging the fields of architecture and interaction design, leading to new and interesting tensions in perspectives and methodological approaches. One such tension is related to temporal constraints. Architecture and interaction design typically produce outcomes with very different lifetime expectancies and, predominantly, use methods with very different pace. As an example, fast, iterative approaches of contemporary interaction design, consisting of frequent updates and redesigns, contrasts with much slower, plan-driven and long-term vision driven approaches within architecture. One question emerging from this tension is how to meaningfully combine perspectives and approaches. One suggestion, among others, has been that interaction design methods such as participatory design can be used to heighten the involvement of inhabitants and other stakeholders in continuous adaptations of the buildings they inhabit. While an interesting proposal, we believe that methodological considerations only partly address the complexity of the tension at play from the different lifetime expectancies of buildings and interactive computer systems. Unfolding this complexity further, we therefore propose a framework of temporal constraints at three levels of abstraction: (1) rationale, (2) method, and (3) outcome. Inspired by previous work, we discuss temporal constraints in HBI at these levels. We argue that designing for HBI requires an understanding of temporally constrained design conventions that apply meaningfully to both the short term and long term.

Soundscapes' are an increasingly active topic in Human-Computer Interaction (HCI) and interaction design. From mapping acoustic environments through sound recordings to designing compositions as interventions, soundscapes appear as a recurring theme across a wide body of HCI research. Based on this growing interest, now is the time to explore the types of studies in which soundscapes provide a valuable lens to HCI research. In this paper, we review papers from conferences sponsored or co-sponsored by the ACM Special Interest Group on Computer-Human Interaction in which the term 'soundscape' occurs. We analyse a total of 235 papers to understand the role of soundscapes as a research focus and identify untapped opportunities for soundscape research within HCI. We identify two common soundscape conceptualisations: (1) Acoustic environments and (2) Compositions, and describe what characterises studies into each concept and the hybrid forms that also occur. On the basis of this, we carve out a foundation for future soundscape research in HCI as a methodological anchor to form a common ground and support this growing research interest. Finally, we ofer fve recommendations for further research into soundscapes within HCI. CCS CONCEPTS• Human-centered computing → HCI theory, concepts and models.

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