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510 results about "Vector graphics" patented technology

Vector graphics are computer graphics images that are defined in terms of 2D points, which are connected by lines and curves to form polygons and other shapes. Each of these points has a definite position on the x- and y-axis of the work plane and determines the direction of the path; further, each path may have various properties including values for stroke color, shape, curve, thickness, and fill. Vector graphics are commonly found today in the SVG, EPS, PDF or AI graphic file formats and are intrinsically different from the more common raster graphics file formats such as JPEG, PNG, APNG, GIF, and MPEG4.

Character and vector graphics watermark for structured electronic documents security

The present invention is a method and apparatus for watermarking text or vector graphics documents. It is based on character-wise or vector graphics element-wise grayscale or color modulation. At high resolution, halftone or dither modulation can also be used in addition or in place of grayscale / color modulation, for printed representation of electronic document. For the detection, the document is acquired through an acquisition device, document segmentation is performed, characters / elements are segmented, the watermark signal is estimated and the information is decoded. Although the proposed scheme mostly addresses the watermarking of hard-copy documents, it can easily be integrated into electronic document editing and acquisition tools, and the watermark is attached to the document electronic version. The invention is applicable either using expensive high- resolution printing and acquisition devices, either using common cheap low-resolution devices, depending on the application needs. The proposed scheme is suitable for example to the protection of security documents, contracts, technical and commercial documentation; it can use any physical support like paper, cellulose, or plastic; it can be used for copy protection, authentication, or tamper proofing; finally it can also be applied to other non security-related applications, such as document tracking, as well as document embedded annotation and watermarked-assisted automatic processing.
Owner:UNIVERSITY OF GENEVA +1

CIM based automatic graph-forming system for power transmission and distribution network

The invention discloses a CIM based automatic graph-forming system for a power transmission and distribution network. The system comprises a data interface module connected with a third-party source system, a CIM data analysis module used for analyzing CIM data, obtained by the data interface module, of the third-party source system, an automatic graph-forming algorithm distribution coordinate system module connected with the CIM data analysis module, a vector graph generation module connected with the automatic graph-forming algorithm distribution coordinate system module, and a graph control module connected with the vector graph generation module. According to the system, for current situations of high maintenance workload, non-unified graph formats and difficult graph interaction in a conventional electric wiring graph manual generation process, an electric wiring graph is automatically generated by utilizing a computer for a CIM standard based graph, so that huge convenience can be brought for power operation personnel. The automatic graph formation not only can improve automatic configuration capability of the system but also more effectively supports a scheduling decision, and is one of key technologies for realizing intelligent scheduling of intelligent power grids.
Owner:STATE GRID CORP OF CHINA +4

Character and vector graphics watermark for structured electronic documents security

The present invention is a method and apparatus for watermarking text or vector graphics documents. It is based on character-wise or vector graphics element-wise grayscale or color modulation. At high resolution, halftone or dither modulation can also be used in addition or in place of grayscale / color modulation, for printed representation of electronic document. For the detection, the document is acquired through an acquisition device, document segmentation is performed, characters / elements are segmented, the watermark signal is estimated and the information is decoded. Although the proposed scheme mostly addresses the watermarking of hard-copy documents, it can easily be integrated into electronic document editing and acquisition tools, and the watermark is attached to the document electronic version.The invention is applicable either using expensive high-resolution printing and acquisition devices, either using common cheap low-resolution devices, depending on the application needs. The proposed scheme is suitable for example to the protection of security documents, contracts, technical and commercial documentation; it can use any physical support like paper, cellulose, or plastic; it can be used for copy protection, authentication, or tamper proofing; finally it can also be applied to other non security-related applications, such as document tracking, as well as document embedded annotation and watermarked-assisted automatic processing.
Owner:UNIVERSITY OF GENEVA +1

Vector graphic display acceleration method based on bitmap caching

The invention relates to a method for accelerating vector graph display on the basis of bitmap buffering, which comprises: buffering a rendering result of a complicated vector object which is continuously displayed in the process of playing vector animation, taking out a corresponding bitmap buffering object when the displayed object appears for the second time, and directly displaying the object on an appointed position through transformation operations. The method for accelerating comprises a pre-buffering strategy, a buffering choosing strategy, a buffer using strategy, a buffer compressing and preserving strategy and a buffer replacing strategy. The method has the advantages that a large amount of calculation is saved, the time for rendering the vector graphs is saved, the display speed is accelerated, the buffer capacity size and the edge curve threshold of a complicated graph are adjusted to achieve the best effect according to the difference of the memory size or the processing speed of an embedded real type device, the operation is simple, only an ID number, the length, the width, the bitmap data, the priority and a frame number which is used recently of the vector object are stored, which can be realized through one simple chained list, a step of rendering and the playing flow are transparent, and the playing flow of the vector animation is not affected.
Owner:INST OF ACOUSTICS CHINESE ACAD OF SCI
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