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

A Time Resolution Calibration Method for UAV Remote Sensing Based on Vehicle-mounted Moving Target

A temporal resolution, unmanned aerial vehicle technology, applied in image analysis, image enhancement, instruments, etc., can solve problems such as unsystematic calibration methods, and achieve ideal accuracy.

Active Publication Date: 2022-04-15
PEKING UNIV
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are relatively systematic calibration methods for the geometry, radiation, and spectral resolution of UAV remote sensing observations, but there is no systematic calibration method for time resolution.

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 Time Resolution Calibration Method for UAV Remote Sensing Based on Vehicle-mounted Moving Target
  • A Time Resolution Calibration Method for UAV Remote Sensing Based on Vehicle-mounted Moving Target
  • A Time Resolution Calibration Method for UAV Remote Sensing Based on Vehicle-mounted Moving Target

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0045] In order to make the technical problems, technical solutions and beneficial effects to be solved by the embodiments of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0046] see figure 1 , the time resolution calibration workflow involved in this method is: establish a rectangular coordinate system in the image, take the center of the target as the origin, horizontally to the right is the positive direction of the X-axis, and vertically upward is the positive direction of the Y-axis; The target target (including moving target and stationary target) in the image is analyzed based on t...

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 for calibrating time resolution of unmanned aerial vehicle remote sensing based on a vehicle-mounted moving target. The steps of the method include: 1) the UAV and the ground target move according to a set method, and obtain two adjacent images taken during the movement of the UAV; The relative velocity v and angle θ between the UAV and the target on the ground; then decompose v to obtain the component velocity v in the horizontal and vertical directions x , v y ; The sub-velocities corresponding to the adjacent two images are averaged to obtain 2) get a mark point on the target in the image, and determine the horizontal and vertical pixel difference S of the mark point in the two adjacent images x , S y ; 3) Calculate the time resolution of the UAV in the horizontal direction as the time resolution in the vertical direction is T x , T y The average T of is used as the remote sensing time resolution of the UAV.

Description

technical field [0001] The invention relates to the fields of aerospace remote sensing, computer imagery, and photogrammetry, and in particular to a method for calibrating time resolution of an unmanned aerial vehicle for vehicle-mounted moving targets and image motion blur analysis. Background technique [0002] In recent years, UAV remote sensing and photogrammetry technology has developed rapidly, and it has been widely used in agriculture, forestry, ecology, ocean, geology, hydrology, military, environmental monitoring and other fields. Calibration is an indispensable link in UAV remote sensing technology and an important guarantee for the precise application of UAV remote sensing. Temporal resolution is the time interval between taking adjacent images. In UAV networking, high-frequency agility means high time resolution, and its quantitative basis is time resolution calibration. At present, there are relatively systematic calibration methods for the geometry, radiatio...

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): G06T7/80
CPCG06T7/80G06T2207/30204
Inventor 晏磊姜凯文赵海盟赵红颖岳焕印万志强明朝辉付瑜于田吴赛
Owner PEKING UNIV