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11055 results about "Feature data" patented technology

In geographic information systems, a feature is an object that can have a geographic location and other properties. Common types of geometries include points, arcs, and polygons. Carriageways and cadastres are examples of feature data. Features can be labeled when displayed on a map.

Electronic evidence preservation system and method based on block chain technology

The invention discloses an electronic evidence preservation system and method based on the block chain technology. The preservation system comprises an evidence storage terminal and a block chain network. The evidence storage terminal comprises a hash operation module and an electronic signature module. The electronic data are uploaded to the evidence storage terminal, the evidence storage terminal performs hash operation on the uploaded electronic data to generate unique feature data of a fixed length of original data; then private key signature is performed on the generated data by using theasymmetric encryption technology, and the generated data are sent to the block chain network; and the block chain network performs primary consensus on the uploaded data and packs the uploaded data into blocks, and synchronously sends the blocks to nodes in the network for distributed storage. By establishing an evidence storage alliance by using the block chain technology, the electronic evidence preservation system has the characteristics of digitalized encryption, centralized grading, anti-tampering, data zero loss and so on. Each node in the block chain can preserve a complete block chaindata copy and witness the chain status of the blocks, so that the centralization risk can be effectively avoided.
Owner:SHENZHEN XIEWANG TECH CO LTD

Method, system and apparatus for telepresence communications

An apparatus, system and method for telepresence communications at a virtual location between two or more participants at multiple locations (100, 200). First perspective data descriptive of the perspective of the virtual location environment experienced by a first participant at a first location and feature data extracted from features of a second participant at a second location (210, 220) are processed to generate a first virtual representation of the second participant in the virtual environment from the perspective of the first participant (250). Likewise, second perspective data descriptive of the perspective of the virtual location environment experienced by the second participant and feature data extracted from features of the first participant (230, 240) are processed to generate a second virtual representation of the first participant in the virtual environment from the perspective of the second participant (260). The first and second virtual representations are rendered and then displayed to the first and second participants, respectively (260, 270). The first and second virtual representations are updated and redisplayed to the participants upon a change in one or more of the perspective data and extracted feature data from which they are generated (290, 295). The apparatus, system and method are scalable to two or more participants.
Owner:GOOGLE TECH HLDG LLC
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