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Method, device and system for geographic information data processing based on graphics processing unit (GPU)

A technology for geographic information data and equipment, which is applied in the field of GPU-based geographic information data processing, can solve the problems that graphics cards do not support double-precision floating-point data, and cannot meet the requirements for processing geographic information data accuracy, etc., so as to improve efficiency and improve The effect of processing efficiency

Inactive Publication Date: 2012-10-24
CHINA DIGITAL VIDEO BEIJING
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Problems solved by technology

[0007] Many existing graphics cards do not support double-precision floating-point data, but only support single-precision floating-point data, which does not meet the data precision requirements for processing geographic information data

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  • Method, device and system for geographic information data processing based on graphics processing unit (GPU)
  • Method, device and system for geographic information data processing based on graphics processing unit (GPU)
  • Method, device and system for geographic information data processing based on graphics processing unit (GPU)

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Embodiment Construction

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0046] Embodiment 1 of the present invention provides a method for processing geographic information data based on GPU, such as figure 1 shown, including the following steps:

[0047] Step S101, receiving main single-precision floating-point data and error single-precision floating-point data obtained by splitting the double-precision floating-point data by the host processor.

[0048] Step S102, performing operations on the main single-precision floa...

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Abstract

An embodiment of the invention discloses a method, a device and a system for geographic information data processing based on a graphics processing unit (GPU). The method includes the following steps: receiving main body single-precision floating point data and error single-precision floating point data which are respectively obtained through double-precision floating point data dividing operated by a main machine processor; operating the main body single-precision floating point data and the error single-precision floating point data according to a preset operation rule and leading the operation result to generate unified single-precision floating point data; and processing geographic information data according to the unified single-precision floating point data. In the embodiment, the double-precision floating point data are divided by the main machine processor, the GPU operates the divided single-precision floating point data, the geographic information data are processed according to the operation result, geographic information data processing with the GPU is achieved, and processing efficiency is improved.

Description

technical field [0001] The present invention relates to the field of geographic information data processing, in particular to a GPU-based geographic information data processing method, device and system. Background technique [0002] In a geographic information system, processing of geographic information data often requires GPU (Graphic Processing Unit, graphics processing unit) programming of a graphics card. GPU is a concept relative to CPU. Since the processing of graphics in modern computers (especially home systems and game enthusiasts) is becoming more and more important, a dedicated graphics core processor is required. The GPU reduces the graphics card's dependence on the CPU and performs some of the original CPU work, especially in graphics data processing and 3D graphics processing. [0003] The data volume of geographic information data is very large and very complex, especially three-dimensional geographic information data. Three-dimensional geographic informat...

Claims

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Application Information

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IPC IPC(8): G06T1/20
Inventor 胡守刚
Owner CHINA DIGITAL VIDEO BEIJING
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