Image transmission method and system for expressway unmanned aerial vehicle inspection

By establishing a feasibility assessment model for low bit rate transmission in highway drone inspections and dynamically adjusting image transmission strategies, the problems of image transmission delay and uneven bandwidth utilization in drone inspections were solved, thereby improving the real-time performance and reliability of drone inspection tasks.

CN122093532AActive Publication Date: 2026-05-26SICHUAN CHENGDU-CHONGQING EXPRESSWAY CO LTD HIGHWAY OPERATION MANAGEMENT BRANCH 2 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SICHUAN CHENGDU-CHONGQING EXPRESSWAY CO LTD HIGHWAY OPERATION MANAGEMENT BRANCH 2
Filing Date
2026-04-22
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

In highway drone inspections, existing technologies cannot effectively adapt to dynamically changing wireless communication bandwidth resources, resulting in image transmission delays, high frame loss rates, and degraded image quality in critical areas. Furthermore, there is a lack of differentiated transmission guarantees for historically abnormal areas, making it impossible to establish a dynamic balance between ensuring the integrity of critical information and bandwidth utilization.

Method used

By acquiring state feature data and historical anomaly frequencies from UAV inspection images, a feasibility assessment model for low bit rate transmission is established, generating a feasibility score and transmission sequence. The number of low bit rate transmissions is optimized, and the transmission strategy is dynamically adjusted to optimize bandwidth utilization.

Benefits of technology

It improved the image transmission quality in key areas, optimized bandwidth utilization, enhanced the real-time performance and reliability of UAV inspection missions, and ensured the complete transmission of critical information in historically high-risk areas.

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Abstract

The invention belongs to the technical field of image transmission, and provides an image transmission method and system for expressway unmanned aerial vehicle inspection, and the method comprises the steps: obtaining the state feature data of an expressway in an inspection image, the historical occurrence frequency of an abnormal condition of a corresponding road section, and the transmission code rate of the image; further, fusing the state features and the historical frequency to establish a low-bit-rate transmission feasibility evaluation model, generating feasibility scores of the images, and screening out a low-bit-rate transmission image sequence; meanwhile, generating a transmission link state evaluation value according to the image transmission code rate; on the basis, establishing an optimization model by taking the low-bit-rate transmission quantity as an independent variable and the link state evaluation value as a dependent variable, and solving the optimal low-bit-rate transmission quantity; and finally, performing code rate reduction transmission on the images in the low-code-rate transmission sequence according to the optimal number. The code rate transmission can be dynamically adjusted according to the image content and historical data, the bandwidth utilization is optimized, and the image transmission quality of the key area is improved.
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