Specification and dialogue control of visual interaction through visual rewriting systems

Bottoni, Paolo; Costabile, M. F.; Mussio, Piero

doi:10.1145/330643.330644

Cited by 55 publications

(41 citation statements)

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“…In this work we merge the Pictorial Computing Laboratory (PCL) approach to WIMP interaction [1] with the Interaction Locus approach to structuring virtual spaces [3] as a step toward the definition of a rational methodology for the design of Virtual Reality (VR) interactive systems.…”

Section: Modeling the Hci Processmentioning

confidence: 99%

Virtual reality interaction: the characteristic pattern approach

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Mussio

et al.

Proceedings IEEE 2002 Symposia on Human Centric Computing Languages and Environments

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We merge the Pictorial Computing Laboratory (PCL) approach to WIMP interaction with the Interaction Locus approach to structuring visual spaces as a step toward the definition of a rational methodology for the design of Virtual Reality interactive systems. The merging of the two points of view allows the refinement of the model of interaction of a user with a virtual environment and leads to the definition of "real" and "virtual" characteristic pattern. Modeling the HCI processIn this work we merge the Pictorial Computing Laboratory (PCL) approach to WIMP interaction [1] with the Interaction Locus approach to structuring virtual spaces [3] as a step toward the definition of a rational methodology for the design of Virtual Reality (VR) interactive systems.The PCL approach models human-computer interaction (HCI) as a process in which the user and the computer communicate by materializing and interpreting a sequence of messages at successive instants of time. Each message is constituted by a set of perceivable elements, called characteristic structures. Two interpretations of each message arise in the interaction: one performed by the user achieving the task, depending on his/her role in the task, as well as on his/her culture, experience, and skills, and the second internal to the system, associating the message with a computational meaning, as determined by the programs implemented in the system [2]. The extension of this approach to desktop virtual reality requires not only an accurate definition of the computational processes and a refinement of its specification, but also a better definition of the machine generating them .The Interaction Locus is the "basic element to give a structure to 3D space, as a summa of coordinated 3D representation, auditory signs and hypertextual information" [3], i.e., a coherent integration of multisensorial information and multimodal interaction. It was introduced in the context of a research that aimed at overcoming weaknesses in the current interaction modalities in 3D environments such as virtual worlds [4]. With the interaction locus concept the author is enabled to build virtual interactive experiences evidencing the areas that are characterized by coherent morphologic * Work supported by MIUR, Italian Ministry of Education, University and Research, in the framework of PRIN 2000 program. features and by homogeneous interaction modalities. This goal is achieved by superimposing to the raw 3D scene a virtual entity whose task is to inform the user about the nature of the part of the scene he/she's entered and to present and to mediate the possible interactions inside its area.Generalizing the PCL model, the environment with which a user interacts is seen as a virtual space in which a population of virtual entities (ve) is present, and which can be described specifying the behavior of the population. The state of each virtual entity is formalized as a characteristic pattern (cp), defined as a triple > linking the current state u of the computat...

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Section: Modeling the Hci Processmentioning

confidence: 99%

Virtual reality interaction: the characteristic pattern approach

Celentano

Fogli

Mussio

et al.

Proceedings IEEE 2002 Symposia on Human Centric Computing Languages and Environments

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“…It is holistic -in the sense of Preece et alt., [17] -in that "the decision about the way an interface should look are made in relation to how this will be physically communicated to the users". However, contrary to most holistic approaches, the PCL formalizes the description of the interaction process, allowing a designer to formally specify [4] his/her own conceptual model intended as a technically accurate model of the computer system created by designers for their specific purposes.…”

Section: Related Workmentioning

confidence: 99%

“…The approach evolves from the Interaction Locus proposal for virtual space structuring [15] generalizing the concept of characteristic pattern introduced by the Pictorial Computing Laboratory (PCL) [4].…”

Section: Introductionmentioning

confidence: 99%

Toward a model-based approach to the specification of virtual reality environments

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Mussio

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et al.

Fourth International Symposium on Multimedia Software Engineering, 2002. Proceedings.

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An approach to the specification of a Virtual Reality (VR) interactive environment is presented, which merges and generalizes two methods recently proposed in the literature: the PCL characteristic pattern approach to WIMP system design and the Interaction Locus approach to interactive navigation in 3-D virtual spaces. The merging of the two points of view allows the refinement of the model of interaction of a user with a virtual environment and leads to the definition of "real" and "virtual" characteristic pattern, which the discussion shows to be an important concept for the designer to properly undertake the design of complex virtual reality systems.

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“…The approach generalizes the model of human computer interaction introduced by the Pictorial Computing Laboratory (PCL) [2], which is based on the concept of characteristic pattern. The generalized model accounts for entities in virtual environments which extend the concept of widget, common in WIMP interfaces.…”

Section: Introductionmentioning

confidence: 99%

“…Due to size constraints, in this paper the PCL model and the Interaction Locus model will be briefly surveyed, addressing the reader to the bibliography, and specifically to [2,5] for the rationale and the details of the two models.…”

Section: Introductionmentioning

confidence: 99%