Unlock instant, AI-driven research and patent intelligence for your innovation.

A GPU-based method and device for quickly extracting DSM from linear array remote sensing images

A remote sensing image and image technology, applied in image analysis, image enhancement, image data processing, etc., can solve the problems of low efficiency and low precision of DSM

Active Publication Date: 2019-05-28
XIAN AEROSPACE TIANHUI DATA TECH CO LTD
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a GPU-based method and device for quickly extracting DSM from linear remote sensing images, so as to at least solve the existing technical problems of low efficiency and low precision of DSM obtained from linear remote sensing images

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A GPU-based method and device for quickly extracting DSM from linear array remote sensing images
  • A GPU-based method and device for quickly extracting DSM from linear array remote sensing images
  • A GPU-based method and device for quickly extracting DSM from linear array remote sensing images

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Attached below figure 1 The present invention is described in detail with specific examples. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation methods and specific operation processes are given, but the protection scope of the present invention is not limited to the subordinate embodiments.

[0018] Such as figure 1 Shown, the embodiment of the present invention provides a kind of method based on GPU (Graphics Processing Unit, graphics processing unit) fast extraction DSM in the line array remote sensing image, comprising:

[0019] S101. Acquire a remote sensing image to be processed and RPC (rationalpolynomial coefficient, rational polynomial coefficient) parameter information corresponding to the remote sensing image.

[0020] S102. Perform Wallis filter processing on the remote sensing image.

[0021] Among them, the remote sensing image is preprocessed through the Wallis filter in the GPU...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method and device for quickly extracting DSM of linear array remote sensing images based on GPU. The method includes: obtaining remote sensing images to be processed and RPC parameter information corresponding to the remote sensing images; performing Wallis filter processing on the remote sensing images; using The GPU and RPC parameter information perform epipolar correction on the filtered remote sensing image, and generate the left epipolar image and right epipolar image of the remote sensing image; calculate the The disparity value range of the left and right epipolar images; get the disparity values ​​of the left and right epipolar images from the disparity value range according to the first image point with the same name, and calculate the left and right epipolar images according to the obtained disparity values The second pixel with the same name, and according to the second pixel with the same name, get the pixel with the same name of the original image, and according to the pixel with the same name of the original image and the RPC parameter information, perform forward intersection based on the RPC model to generate a remote sensing image DSM to solve the problem from The problem of low efficiency and low precision of acquiring DSM in linear array remote sensing images.

Description

technical field [0001] The invention relates to the technical field of remote sensing image information extraction, in particular to a GPU-based method and device for quickly extracting DSM from linear array remote sensing images. Background technique [0002] Digital surface model (Digital Surface Model, DSM) is the process of map product production, such as generating contour lines, true orthophoto production, building extraction and reconstruction, digital elevation model (Digital Elevation Model, DEM) extraction, geographic information update, etc. important source of information. DSM plays an important role in civilian fields such as urban change monitoring, land management, traffic management, mineral resource investigation, and cultural relic protection, as well as in military fields such as combat command automation control systems and precision weapon guidance. [0003] The essence of using photogrammetry to obtain DSM is to find the same-named pixel in the stereos...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06K9/00
CPCG06T2200/28G06T2207/10032G06V20/13
Inventor 折晓宇范晓敏巩丹超陈巍然靳笑琳
Owner XIAN AEROSPACE TIANHUI DATA TECH CO LTD