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Westford, MA, United States

Virtual Computer is a venture-backed software company in the Boston area that produces desktop virtualization products, which combine centralized management with local execution on a hypervisor running on PCs. Virtual Computer has developed a type-1 hypervisor that runs directly on end-user PCs, delivering native PC performance and mobility. By running the workload on the PC, Virtual Computer enables companies to have centralized management without servers, storage, and networking required for server-hosted VDI. The technology supports shared image management, enabling an IT professional to manage thousands of desktops and laptops the same way that they would manage one. Wikipedia.


Spillmann J.,Eawag - Swiss Federal Institute of Aquatic Science and Technology | Harders M.,Virtual Computer
Computer Animation and Virtual Worlds | Year: 2010

Elastic rods are thin flexible objects typically undergoing large non-linear deformations that cannot be modeled with linear methods. They are used in a number of research fields, e.g., to represent hair or ropes in animations, or catheters or needles in medical simulations. In this paper, we propose a deformation model for inextensible elastic rods. The method of Lagrange multipliers is employed to enforce the inextensibility of the rod, and to couple the material frames with the centerline. The resulting system is banded, allowing for an efficient linear time solution. We also propose a manifold projection method to incorporate the non-penetration constraints resulting from contact handling into our constrained Lagrangian mechanics (CLM) problem. We further augment the contact model by treating torsional friction. This allows to reproduce friction effects such as dynamic rolling and twisting of rods. Various examples underline the benefits and applicability of our model. Copyright © 2010 John Wiley & Sons, Ltd. Source


Sorgi L.,Virtual Computer
Proceedings - International Conference on Image Processing, ICIP | Year: 2011

The paper presents the applicability of the Rodrigues Rotation Formula (RRF) in the context of Two-Views Geometry estimation. The Epipolar Constraint is usually formulated as the belonging of an image point to its corresponding Epipolar Line, instead using the RRF we will arrange the same constraint in terms of equivalence between 3D unit-norm vectors. This alternative formulation generates a geometrically meaningful error measure, which according to the presented results, provides a significant improvement of the estimation accuracy with respect to the widely used Sampson error, still maintaining a comparable computational cost. © 2011 IEEE. Source


Patent
Virtual Computer | Date: 2010-08-17

A virtual workspace can include an active instance of a layered virtual file system namespace. A layered virtual file system namespace is referred to by the virtual workspace and includes a collection of system data (e.g. layered virtual file system base layer), user data (e.g. layered virtual file system user layer), and virtualized applications (e.g. virtual app layer), metadata and policies (e.g. layered virtual file system layer scope). Because a virtual workspace can include software such as an operating system and one or more applications in addition to user data, a virtual workspace can be aligned with a namespace so that an operating system of the virtual workspace may be located at a base layer, one or more applications executing on the operating system may be located at an upper virtual app layer, and user data in a virtual workspace may be found at any layer at or above the user layer.


Patent
Virtual Computer | Date: 2010-11-11

A virtual workspace can include an active instance of a layered virtual file system namespace. A layered virtual file system namespace is referred to by the virtual workspace and includes a collection of system data (e.g. layered virtual file system base layer), user data (e.g. layered virtual file system user layer), and virtualized applications (e.g. virtual app layer), metadata and policies (e.g. layered virtual file system layer scope). Because a virtual workspace can include software such as an operating system and one or more applications in addition to user data, a virtual workspace can be aligned with a namespace so that an operating system of the virtual workspace may be located at a base layer, one or more applications executing on the operating system may be located at an upper virtual app layer, and user data in a virtual workspace may be found at any layer at or above the user layer.


Patent
Virtual Computer | Date: 2010-11-11

A virtual workspace can include an active instance of a layered virtual file system namespace. A layered virtual file system namespace is referred to by the virtual workspace and includes a collection of system data (e.g. layered virtual file system base layer), user data (e.g. layered virtual file system user layer), and virtualized applications (e.g. virtual app layer), metadata and policies (e.g. layered virtual file system layer scope). Because a virtual workspace can include software such as an operating system and one or more applications in addition to user data, a virtual workspace can be aligned with a namespace so that an operating system of the virtual workspace may be located at a base layer, one or more applications executing on the operating system may be located at an upper virtual app layer, and user data in a virtual workspace may be found at any layer at or above the user layer.

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