摘要:
Methods and apparatus solving problems of polygonal approximations of isosurfaces extracted from uniformly sampled volumes increasing in size due to the availability of higher resolution imaging techniques. The large number of primitives represented hinders the interactive exploration of the dataset. Examples of methods are provided for adaptive isosurface extraction that are generally easy to implement and allows the user to decide the degree of adaptivity as well as the choice of isosurface extraction algorithm. The extraction of the isosurface is optimized by warping the volume. In a warped volume, areas of importance (e.g. containing significant details) are inflated while unimportant ones are contracted. Once the volume is warped, any extraction algorithm can be applied. The extracted mesh is subsequently unwarped such that the warped areas are rescaled to their initial proportions. The resulting isosurface is represented by a mesh that is more densely sampled in regions decided as important.
摘要:
Described is a method and system of requirements management including the expression in a requirements management tool of a relationship selected from the group consisting of a satisfaction relationship, an alternative relationship, a conflict relationship, and a constant dependency relationship.Described is a requirements management method including a first automatic analyzing of a requirements set to find conflicts, having a conflict free requirements subset. and a second automatic analyzing of the requirements set to verify completeness.
摘要:
In this invention there are described a set of algorithms based on multiresolution subdivision surfaces that perform at interactive rates and enable intuitive surface cut-and-paste operations. The method includes separating a source region of interest of a source surface into a source base surface and a source detail surface; separating a target region of interest of a target surface into a target base surface and a target detail surface; and pasting the source detail surface onto the target base surface in accordance with a mapping. The step of pasting includes parameterizing and mapping the parameterized regions of interest of the source and target surfaces into an intermediate plane, and aligning the parameterizations using a linear transformation that compensates for first order distortions.
摘要:
Disclosed are methods and apparatus for obtaining the shape of an object by observing silhouettes of the object. At least one point light source is placed in front of the object, thereby casting a shadow of the object on a translucent panel that is placed behind the object. A camera, or other imaging device, captures an image of the shadow from behind the translucent panel. The object's full silhouette is obtained from the image of the shadow as the region of the shadow is substantially darker than the region outside of the shadow. The full silhouette thus obtained may be processed by any suitable shape from silhouette algorithm, and thus objects are not limited in topological type. A color image of the object can optionally be obtained simultaneously with the shadow image using a camera placed on the same side of the object as the light source. Multiple silhouettes can be captured for one object position, reducing the number of rotations needed on a turntable system, and reducing the post-processing needed to register geometries obtained from multiple different positions.
摘要:
A computer implemented method, system, and/or computer program product assigns work to a software factory for implementing a project. A project model of a project is generated. Project model subcomponents are mapped to work packets that are available to a software factory, thus leading to the generation of a work plan for performing the project via an execution of the available work packets.
摘要:
A method, system, and computer-readable medium for staged validation of work packets within a software factory are presented. In one embodiment, the method includes creating a preliminary work packet. A validation constraint is appended to the preliminary work packet to create a constrained work packet. The constrained work packet is submitted to the software factory, within which the validation constraint is validated at different stages to confirm that the validation constraint is proper for the constrained work packet. If a validation result fails to meet all requirements of the validation constraint at each stage, the validation constraint is resolved, and the constrained work packet is re-submitted at that stage.
摘要:
Described is a method and system of requirements management including the expression in a requirements management tool of a relationship selected from the group consisting of a satisfaction relationship, an alternative relationship, a conflict relationship, and a content dependency relationship.Described is a requirements management method including a first automatic analyzing of a requirements set to find conflicts, having a conflict free requirements subset and a second automatic analyzing of the requirements set to verify completeness.
摘要:
Disclosed is an improved computer system, method, and program product that has one or more input devices for receiving one or more input meshes representing a three dimensional model. The three dimensional model is capable of being represented as a 2-manifold triangular mesh. A conversion process automatically converts the input mesh to a multiresolution quadrilateral-based subdivision surface (MQSS) representation.
摘要:
Described is a method and system of requirements management including the expression in a requirements management tool of a relationship selected from the group consisting of a satisfaction relationship, an alternative relationship, a conflict relationship, and a constant dependency relationship. Described is a requirements management method including a first automatic analyzing of a requirements set to find conflicts, having a conflict free requirements subset. and a second automatic analyzing of the requirements set to verify completeness.
摘要:
A light source calibration target has a surface in view of a camera of an image capture system, The target includes a substrate having a substantially Lambertian surface, a visually distinct polygonal shape having corners formed on said surface so as to be visually distinct from the surface, and a plurality of objects each having an upstanding tip mounted on the surface, A method of using the calibration target operates, for each of the light sources to be calibrated, to capture an image of the target; process the captured image to derive light source calibration data and to store the calibration data.