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Image fusion method based on parallel computing algorithm

An image fusion and parallel computing technology, applied in the field of image processing, can solve problems such as the inability to meet the requirements of image data processing speed, and achieve the effect of simple and clear program structure, enhanced robustness, and simple and clear technical process

Active Publication Date: 2019-10-15
RES INST OF FOREST RESOURCE INFORMATION TECHN CHINESE ACADEMY OF FORESTRY +1
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Problems solved by technology

[0003] However, traditional image fusion algorithms are all applications based on serial computing algorithms based on traditional CPU architecture. For remote sensing image data, with the improvement of spatial resolution, the data volume of each image is getting larger and larger. When performing image fusion, limited by computer resources and traditional serial computing algorithms, it is increasingly unable to meet people's requirements for image data processing speed.

Method used

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  • Image fusion method based on parallel computing algorithm
  • Image fusion method based on parallel computing algorithm
  • Image fusion method based on parallel computing algorithm

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Embodiment 1

[0042] Embodiment 1: as figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 As shown, an image fusion method based on a parallel computing algorithm performs fusion operations on panchromatic and multispectral images with the same spatial range formed by correction, registration, and cropping in the same area to form a scene with New images featuring panchromatic and multispectral information.

[0043] The present invention proposes the technical idea of ​​exchanging space for time. By establishing two two-dimensional data tables, the spatial coordinate relationship between the two scene images and the corresponding relationship between image pixels are linked to form a very intuitive one-to-one correspondence in space. relationship, such as figure 1 as shown, figure 1 Schematic diagram of the spatial correspondence between panchromatic and multispectral images, shown in figure 1 Assuming that image TX44 has a spatial resolution of 4 meters and image TX11 has a sp...

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Abstract

The invention discloses an image fusion method based on a parallel computing algorithm, and belongs to the technical field of image processing. The method comprises: constructing a two-dimensional data table to describe the spatial position and pixel information of the image through a data resampling method, and constructing a topological corresponding relation of the two-dimensional images at a pixel level through the two-dimensional data table; constructing a one-to-one correspondence topological relation between two scene image pixel levels; grouping and slicing image data according to a row direction (or a column direction or a data block), and synchronously starting corresponding calculation processing flows in a multi-thread and multi-task mode to perform parallel calculation according to specific conditions of calculation resources, so that rapid fusion calculation of two images is realized.

Description

technical field [0001] The invention relates to an image fusion method based on a parallel computing algorithm, belonging to the technical field of image processing. Background technique [0002] Since the image fusion technology can not only preserve the spatial details of the high-spatial-resolution panchromatic image, but also retain the characteristic information of the ground object spectrum characteristic of the lower-spatial-resolution multispectral image, it can greatly improve the utilization of image information. Enhancing the reliability of image interpretation and improving the effect of image interpretation are widely used and play a great role in forest resource monitoring, wetland resource monitoring, sandy land monitoring and change analysis. Image fusion technology has developed into a very common basic technology in practical application of remote sensing technology. [0003] However, traditional image fusion algorithms are all applications based on serial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/50
CPCG06T5/50G06T2207/20221
Inventor 王晓慧孟献策谭炳香冯林艳肖鹏
Owner RES INST OF FOREST RESOURCE INFORMATION TECHN CHINESE ACADEMY OF FORESTRY
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