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基于非对称编码的无人机巡检图像压缩方法
电子技术应用
辛帅魁,吴明慧,戚满顺,秦齐,程嘉诚,朱天昊
1.国网江苏省电力有限公司南京市江北新区供电分公司;2.国网江苏省电力有限公司南京供电分公司
摘要: 随着无人机技术在电网运检中的广泛应用,图像压缩传输技术日趋重要。为解决无人机图像处理算力不足,巡检图像压缩耗时长、效果差的问题,提出了一种基于非对称编码的无人机巡检图像压缩方法。首先,通过去除图像冗余空间、图像色彩量化有效地提高了无人机巡检图像压缩率;其次,通过压缩模型轻量化适配,降低线路巡检图像压缩算力要求;在此基础上,通过高质量的图像恢复增强,提高了图像的峰值信噪比。最后,该方法在某省电力科学研究院中进行了仿真应用,其恢复图像峰值信噪比为34.2 dB,平均压缩与恢复时间为4 632 ms。所提方法能有效提高无人机巡检图像压缩速度,提高恢复图像质量。
中图分类号:TH89 文献标志码:A DOI: 10.16157/j.issn.0258-7998.256850
中文引用格式: 辛帅魁,吴明慧,戚满顺,等. 基于非对称编码的无人机巡检图像压缩方法[J]. 电子技术应用,2026,52(2):57-61.
英文引用格式: Xin Shuaikui,Wu Minghui,Qi Manshun,et al. Unmanned aerial vehicle inspection image compression method based on asymmetric coding[J]. Application of Electronic Technique,2026,52(2):57-61.
Unmanned aerial vehicle inspection image compression method based on asymmetric coding
Xin Shuaikui1,Wu Minghui2,Qi Manshun2,Qin Qi1,Cheng Jiacheng2,Zhu Tianhao2
1.State Grid Nanjing City Jiangbei District Electric Power Supply Company;2.State Grid Nanjing Power Supply Company
Abstract: With the widespread application of drone technology in power grid operation and inspection, image compression transmission technology is becoming increasingly important. To solve the problems of insufficient computing power in drone image processing, long compression time and poor performance of inspection images, a drone inspection image compression method based on asymmetric encoding is proposed. Firstly, by removing redundant image space and quantifying image colors, the compression rate of drone inspection images has been effectively improved. Secondly, by compressing the model and adapting it with lightweight design, the computational requirements for compressing inspection images of power lines can be reduced. On this basis, the peak signal-to-noise ratio of the image was improved through high-quality image restoration enhancement. Finally, the method proposed in this paper was simulated and applied in a certain provincial electric power science research institute, with a peak signal-to-noise ratio of 34.2 dB and an average compression and recovery time of 4 632 ms. The proposed method can effectively improve the compression speed of unmanned aerial vehicle inspection images and enhance the quality of restored images.
Key words : asymmetric coding;drone inspection;image compression;image color quantization;peak signal-to-noise ratio

引言

随着电网数字化建设工作的不断开展,无人机技术在电网运检中得到了广泛的应用[1-2]。当前用于电网运检的无人机装备不断增多,无人机自主电网巡检技术已初具规模[3]。但无人机巡检时产生的大量级影像数据,造成数据通信费用高、存储设备投资大的问题[4-5]。因此,探索无人机拍摄的电网巡检图片进行有效压缩,对无人机巡检具有积极的意义。

国内外许多学者对无人机巡检图像压缩方法做了大量研究。文献[6]中提出了一种基于图像语义编码的无人机巡检图像压缩方法,对图像进行语义提取,并进行编码和传输,提高了图像压缩率。文献[7]中通过双锥特征融合图像压缩方法对无人机巡检图像进行压缩,以提高图像压缩率。文献[8]中提出了一种基于残差特征聚合的图像压缩方法,通过重构子网络压缩无人机图像。文献[9]中提出了一种自适应加权的图像压缩方法,采用K奇异值分解对无人机巡检图像进行压缩。由此可见,无人机图像压缩方法多样,且取得了一定的成果。但上述方法对无人机图形处理器性能要求较高,现有无人机图像处理算力不足,造成图像压缩耗时长,图像压缩效果差,不能满足电力缺陷识别的要求。

为解决无人机图像处理算力不足,电网巡检图像压缩耗时长、效果差的问题,提出了一种基于非对称编码的无人机巡检图像压缩方法。通过非对称编解码图像压缩技术对神经网络的输入、隐含层网络进行拆分,建立轻量化神经网络模型,降低了无人机处理电网巡检图像的算力;通过输出层实现无人机电网巡检图像的增强恢复解码,满足电网巡检图像识别要求。


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作者信息:

辛帅魁1,吴明慧2,戚满顺2,秦齐1,程嘉诚2,朱天昊2

(1.国网江苏省电力有限公司南京市江北新区供电分公司,江苏 南京 211899;

2.国网江苏省电力有限公司南京供电分公司,江苏 南京 210019)

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