Object-oriented design

About: Object-oriented design is a research topic. Over the lifetime, 5136 publications have been published within this topic receiving 144108 citations.

System and method for processing video images

Abstract: Some representative embodiments are directed to creating a 'virtual world' by processing a series of two dimensional images to generate a representation of the physical world depicted in the series of images. The virtual world representation includes models of objects that specify the locations of the objects within the virtual world, the geometries of the objects, the dimensions of the objects, the surface representation of the objects, and/or other relevant information. By developing the virtual world representation, a number of image processing effects may be applied such as generation of stereoscopic images, object insertion, object removal, object translation, and/or other object manipulation operations.

Automated modeling and robotic grasping of unknown three-dimensional objects

Abstract: This paper describes the development of a novel vision-based modeling and grasping system for three-dimensional (3D) objects whose shape and location are unknown a priori. Our approach integrates online computer vision-based 3D object modeling with online 3D grasp planning and execution. A single wrist-mounted video camera is moved around the stationary object to obtain images from multiple viewpoints. Object silhouettes are extracted from these images and used to form a 3D solid model of the object. To refine the model, the object's top surface is modeled by scanning with a wrist-mounted line laser while recording images. The laser line in each image is used to form a 3D surface model that is combined with the silhouette result. The grasp planning algorithm is designed for the parallel-jaw grippers that are commonly used in industry. The algorithm analyses the solid model, generates a robust force closure grasp, and outputs the required gripper position and orientation for grasping the object. The robot then automatically picks up the object. Experiments are performed with two real-world 3D objects, a metal bracket and a hex nut. The shape, position and orientation of the objects are not known by the system a priori. The time required to compute an object model and plan a grasp was less than 4 s for each object. The experimental results demonstrate that the automated grasping system can obtain suitable models and generate successful grasps, even when the objects are not lying parallel to the supporting table.

Method and system for propagating object properties in a desktop publishing program

Abstract: A desktop publishing software program configured to propagate object content-defining and format-defining object properties so that user-defined object properties automatically propagate to other objects in the document. Object property propagation allows the author of the document to edit a number of linked objects by editing just one of the objects. To enable object property propagation, the desktop publishing software program includes a propagation table for each predefined layout. Each document is constructed from a number of components, and multiple instances of the same component may occur in a document. Each object has a name including an identifier and an instance code. The desktop publishing software program supports the following object property propagation rules, which may be applied to content properties and format properties separately: (1) do not propagate to any other objects; (2) propagate to objects in the same component whose identifiers belong to the same content or format group; (3) propagate to objects in the same document whose identifiers belong to the same content or format group; (4) propagate to objects in other components of the same document with the same identifiers and instance codes; and (5) propagate to objects in the same document whose identifiers belong to the same content or format group and save the object property in a registry so that the object property propagates to other documents as well.

Cognitive activities and levels of abstraction in procedural and object-oriented design

Abstract: The research reported in this article provides descriptions of design activities and of the evolving designs for expert procedural and expert object-oriented (OO) designers and for novice OO designers who also had extensive procedural experience. Ten experienced programmers were observed while designing software that would serve as a scoring system for swim meet competitions. Talk-aloud protocols were collected and analyzed for different types of cognitive activities and strategies that occurred during the course of design. In particular, we analyzed both the design activities and the level of abstraction of the designs over the course of time for each group in order to examine the role of several design strategies described in the literature as central in procedural design. In the course of these analyses, we developed a generic way (design template) of comparing the final designs of designers in different paradigms. Using this template, we analyzed the designs in terms of their completeness for different views at different levels of abstraction. Our analyses of procedural and OO designers-in terms of their cognitive activities, design strategies, and final designs-provide a detailed comparison between design paradigms in practice. A variety of descriptive results are discussed in terms of positive transfer, interference, and implications for design training. Findings are also discussed in terms of the relation between tasks and design paradigms.

Method and apparatus for facilitating integration of software objects between workspaces in a data processing system graphical user interface

Abstract: A method and apparatus is provided for facilitating operator initiated integration of items between software objects in a graphical user interface. In this technique, the operator selects a source software object and one or more target software objects. The source software object and the target software objects include data items which may be copied by the operator between the software objects during an accelerated integration mode of operation. During the accelerated integration mode of operation, a graphical pointing device is utilized by the operator to select items which are present in the source software object. By manipulating the graphical pointing device, the operator selects items from the source software object for automatic inclusion in the one or more target software objects, while the graphical pointing device is maintained entirely within the source software object. A visual indication is automatically provided which is representative of the step of automatically copying.