视频流分片编码的无人机视频传输方法 下载: 1201次
UAV Video Transmission Method Based on Video Stream Slicing and Coding
西安工业大学电子信息工程学院, 陕西 西安 710021
图 & 表
图 1. 系统整体实现图
Fig. 1. Overall implementation diagram of system
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图 2. 图像传输模型
Fig. 2. Image transmission model
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图 3. 编解码流程
Fig. 3. Flowchart of encoding and decoding
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图 4. 小波分解细节图。(a)详细信息;(b)水平细节; (c)垂直细节;(d)对角细节
Fig. 4. Wavelet decomposition detail diagram. (a) Detailed information; (b) horizontal detail; (c) vertical detail; (d) diagonal detail
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图 5. 三级小波变换示意图
Fig. 5. Diagram of third-order wavelet transform
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图 6. 三级小波分解流程
Fig. 6. Flowchart of three-level wavelet decomposition
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图 7. 原图像
Fig. 7. Original image
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图 8. 三级小波变换输出图像
Fig. 8. Output image obtained by three-level wavelet transformation
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图 9. 采集端三分量分解量化输出图。 (a) Y; (b) Cr; (c) Cb
Fig. 9. Three-component decomposition quantization output images at acquisition end. (a) Y; (b) Cr; (c) Cb
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图 10. 接收端三分量复原输出图。 (a) Y; (b) Cr; (c) Cb
Fig. 10. Three-component restoration output images at receiving end. (a) Y; (b) Cr; (c) Cb
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图 11. 图像。(a)采集图像;(b)接收图像
Fig. 11. Images. (a) Collected image; (b) received image
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图 12. 接收时延的变化趋势
Fig. 12. Trend of receiving time delay
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图 13. 接收帧率的变化趋势
Fig. 13. Trend of receiving frame rate
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表 1传输过程中指标对比
Table1. Comparison of indicators in transmission process
Image | | | SSIM | RMSE |
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FDWT&IDWT | FDWT1 | IDWT1 | 0.986780 | | FDWT2 | IDWT2 | 0.986678 | | FDWT3 | IDWT3 | 0.987841 | | Q&IQ | Q_Y | IQ_Y | 0.987745 | | Q_Cr | IQ_Cr | 0.989623 | | Q_Cb | IQ_Cb | 0.980875 | | Image comparison | Srcimage | Recimage | 0.987928 | 1.633673 |
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表 2尺寸为640×480图像质量的定量描述
Table2. Quantitative description of 640×480 image quality
| | SSIM | RMSE |
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Srcimage 1 | Recimage 1 | 0.985544 | 1.615866 | Srcimage 2 | Recimage 2 | 0.985799 | 1.634215 | Srcimage 3 | Recimage 3 | 0.985878 | 1.587972 | Srcimage 4 | Recimage 4 | 0.985326 | 1.613286 | Srcimage 5 | Recimage 5 | 0.984940 | 1.664491 | Srcimage 6 | Recimage 6 | 0.985986 | 1.572247 | Srcimage 7 | Recimage 7 | 0.984756 | 1.613159 | Srcimage 8 | Recimage 8 | 0.975412 | 1.632571 | Srcimage 9 | Recimage 9 | 0.984568 | 1.571135 | Srcimage 10 | Recimage 10 | 0.985979 | 1.564518 |
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表 3尺寸为1280×720图像质量的定量描述
Table3. Quantitative description of 1280×720 image quality
| | SSIM | RMSE | | | | SSIM | RMSE |
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Srcimage 1 | Recimage 1 | 0.977228 | 2.680730 | Srcimage 6 | Recimage 6 | 0.975578 | 2.678446 |
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Srcimage 2 | Recimage 2 | 0.975794 | 2.689732 | Srcimage 7 | Recimage 7 | 0.974850 | 2.674558 | Srcimage 3 | Recimage 3 | 0.975895 | 2.687534 | Srcimage 8 | Recimage 8 | 0.978012 | 2.685717 | Srcimage 4 | Recimage 4 | 0.978647 | 2.683296 | Srcimage 9 | Recimage 9 | 0.984051 | 2.678637 | Srcimage 5 | Recimage 5 | 0.986541 | 2.667825 | Srcimage 10 | Recimage 10 | 0.981211 | 2.684916 |
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表 4不同算法的性能对比
Table4. Performance comparison of different algorithms
Algorithm | Image resolution | SSIM | RMSE | Total receivingtime/ms | Speed/(frame·s-1) |
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JPEG(P=80, R=0) | 640×480 | 0.935073 | 4.359058 | 25 | 45 | 1280×720 | | | | | JPEG(P=60, R=10) | 640×480 | 0.915425 | 5.187605 | 29 | 43 | 1280×720 | 0.907840 | 5.147938 | 45 | 38 | JPEG2000 | 640×480 | 0.963516 | 3.124578 | 30 | 38 | 1280×720 | 0.954521 | 3.061465 | 47 | 36 | SVD(S=40, R=10) | 640×480 | 0.937214 | 4.183163 | 24 | 48 | 1280×720 | 0.934430 | 4.025180 | 46 | 32 | SVD(S=50, R=10) | 640×480 | 0.955571 | 3.217802 | 35 | 37 | 1280×720 | 0.954312 | 3.118540 | 48 | 33 | Proposed algorithm(R=10) | 640×480 | 0.985472 | 1.650121 | 26 | 42 | 1280×720 | 0.972370 | 2.674558 | 43 | 28 |
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表 5采集图像和接收图像的各参数统计结果
Table5. Statistical results of each parameter of collected and received images
Imageresolution | Acquisitiontime/ms | Coding Time/ms | Decodingtime/ms | Displaytime/ms | Total receivingtime/ms | Speed/(frame·s-1) |
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640×480 | 8.046150 | 21.657586 | 19.525346 | 0.291347 | 24 | 40 | 640×480 | 4.781484 | 20.752239 | 19.510056 | 0.461578 | 45 | 36 | 640×480 | 6.237983 | 20.955538 | 19.324789 | 0.262260 | 37 | 43 | 640×480 | 9.234905 | 20.955729 | 19.425044 | 0.368356 | 33 | 42 | 640×480 | 7.363080 | 21.958112 | 19.622812 | 0.220060 | 30 | 55 | 640×480 | 7.099151 | 21.256327 | 19.625601 | 0.759601 | 27 | 52 | 640×480 | 7.047653 | 20.955729 | 19.725832 | 0.778436 | 21 | 40 | 640×480 | 8.022308 | 20.958542 | 19.826087 | 0.518560 | 53 | 59 | 640×480 | 7.053852 | 20.855641 | 19.725904 | 0.508308 | 50 | 57 | 640×480 | 6.074666 | 21.256828 | 19.725952 | 0.229358 | 37 | 53 | 1280×720 | 11.811349 | 43.198490 | 43.415474 | 1.002645 | 45 | 29 | 1280×720 | 13.190103 | 42.543315 | 43.315148 | 1.002550 | 45 | 30 | 1280×720 | 12.003826 | 41.543960 | 42.813849 | 1.003265 | 48 | 29 | 1280×720 | 10.649919 | 41.941475 | 43.205571 | 1.034021 | 46 | 31 | 1280×720 | 11.999368 | 42.145586 | 43.214893 | 1.002073 | 43 | 30 | 1280×720 | 11.032342 | 42.546129 | 43.115067 | 1.503229 | 45 | 29 | 1280×720 | 13.033390 | 42.744135 | 42.716670 | 2.005577 | 60 | 27 | 1280×720 | 12.539241 | 42.746853 | 42.763590 | 1.006126 | 44 | 29 | 1280×720 | 12.816667 | 42.021489 | 43.096685 | 1.005411 | 43 | 28 | 1280×720 | 12.212991 | 43.448495 | 42.987799 | 2.009392 | 40 | 26 |
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李亮亮, 吕志刚, 郭锦, 李晓艳, 杨永侠. 视频流分片编码的无人机视频传输方法[J]. 激光与光电子学进展, 2020, 57(24): 241021. Liangliang Li, Zhigang Lü, Jin Guo, Xiaoyan Li, Yongxia Yang. UAV Video Transmission Method Based on Video Stream Slicing and Coding[J]. Laser & Optoelectronics Progress, 2020, 57(24): 241021.