Abstract: The display system and a thick line display method realizes a high-speed and accurate display of a thick line without any disorder even if a display range is to be processed by two or more clip frames when the thick line is to be displayed by parallel setting a reference line component and at least one additional line component which is obtained by parallel moving the reference line component in a display system such as an information processing unit that displays graphs. For this purpose, a clip frame showing a display range is expanded by a predetermined width equal to or larger than the total width of additional line components to be set at least at one side of the reference line component and the additional line component is obtained in that expanded frame, and the line component within the clip frame of the additional line component and the reference line component within the clip frame are displayed.

Abstract: A method and apparatus used with a printed circuit board (PCB) defect detecting system generates a reference database image of the PCB having tolerances for each individual PCB feature. A transitional data base is included that has three states, black, white and gray corresponding to areas where the PCB features respectively must appear, must not appear and may or may not appear.

Abstract: An apparatus for preparing output data representative of an output image consisting of output image segments each defined by output picture elements such that each output image segments corresponds to each input picture element. The apparatus includes a pattern data memory for storing at least one set of basic output-image unit pattern data each representative of a basic pattern of position of output picture elements defining a basic output image area, and a device for preparing the output data for each output image segment whose pattern of positions of output picture elements is identical with the basic pattern represented by any set of basic output-image unit pattern data stored in the memory. The output data are prepared based on the appropriate set of unit pattern data, without determining the positions of the output picture elements lying within the outline of that output image segment obtained from the corresponding input picture element.

Abstract: In mesh-generation in which a three-dimensional analysis domain enclosing an object geometry is divided into three-dimensional elements by means of the finite element method, the object geometry or analysis domain is represented by three-dimensional run-length data, and the analysis domain is divided into the elements on the basis of a predetermined rule, elements intersecting with the object geometry are effective and are remained, then nodes of the remained elements are classified into inner node or outer nodes, and the outer nodes are shifted onto the surface of the object geometry by "fitting process", thus mesh-generation of the three-dimensional geometry is automatized.

Abstract: Apparatus for generating an image for digital scene simulation, the apparatus comprising a first store for storing address data defining the three-dimensional shape of an object, a second store for storing video data defining the two-dimensional surface detail of the object, a matrix circuit for manipulating the address data to move the object (by translating it, changing its orientation, or both translating it and changing its orientation), a perspective transformation device for perspective tansforming the manipulated address data to form transformed address data defining a two-dimensional image of the object after the manipulation, and a third store in which the video data is written, under control of the transformed address data, in the form of output video data defining a two-dimensional image of the object after the manipulation and with the surface detail.