激光与光电子学进展, 2020, 57 (24): 241021, 网络出版: 2020-12-02  

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
作者单位
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

ImagexySSIMRMSE
FDWT&IDWTFDWT1IDWT10.986780
FDWT2IDWT20.986678
FDWT3IDWT30.987841
Q&IQQ_YIQ_Y0.987745
Q_CrIQ_Cr0.989623
Q_CbIQ_Cb0.980875
Image comparisonSrcimageRecimage0.9879281.633673

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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

xySSIMRMSE
Srcimage 1Recimage 10.9855441.615866
Srcimage 2Recimage 20.9857991.634215
Srcimage 3Recimage 30.9858781.587972
Srcimage 4Recimage 40.9853261.613286
Srcimage 5Recimage 50.9849401.664491
Srcimage 6Recimage 60.9859861.572247
Srcimage 7Recimage 70.9847561.613159
Srcimage 8Recimage 80.9754121.632571
Srcimage 9Recimage 90.9845681.571135
Srcimage 10Recimage 100.9859791.564518

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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

xySSIMRMSExySSIMRMSE
Srcimage 1Recimage 10.9772282.680730Srcimage 6Recimage 60.9755782.678446
Srcimage 2Recimage 20.9757942.689732Srcimage 7Recimage 70.9748502.674558
Srcimage 3Recimage 30.9758952.687534Srcimage 8Recimage 80.9780122.685717
Srcimage 4Recimage 40.9786472.683296Srcimage 9Recimage 90.9840512.678637
Srcimage 5Recimage 50.9865412.667825Srcimage 10Recimage 100.9812112.684916

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表 4不同算法的性能对比

Table4. Performance comparison of different algorithms

AlgorithmImage resolutionSSIMRMSETotal receivingtime/msSpeed/(frame·s-1)
JPEG(P=80, R=0)640×4800.9350734.3590582545
1280×720
JPEG(P=60, R=10)640×4800.9154255.1876052943
1280×7200.9078405.1479384538
JPEG2000640×4800.9635163.1245783038
1280×7200.9545213.0614654736
SVD(S=40, R=10)640×4800.9372144.1831632448
1280×7200.9344304.0251804632
SVD(S=50, R=10)640×4800.9555713.2178023537
1280×7200.9543123.1185404833
Proposed algorithm(R=10)640×4800.9854721.6501212642
1280×7200.9723702.6745584328

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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

ImageresolutionAcquisitiontime/msCoding Time/msDecodingtime/msDisplaytime/msTotal receivingtime/msSpeed/(frame·s-1)
640×4808.04615021.65758619.5253460.2913472440
640×4804.78148420.75223919.5100560.4615784536
640×4806.23798320.95553819.3247890.2622603743
640×4809.23490520.95572919.4250440.3683563342
640×4807.36308021.95811219.6228120.2200603055
640×4807.09915121.25632719.6256010.7596012752
640×4807.04765320.95572919.7258320.7784362140
640×4808.02230820.95854219.8260870.5185605359
640×4807.05385220.85564119.7259040.5083085057
640×4806.07466621.25682819.7259520.2293583753
1280×72011.81134943.19849043.4154741.0026454529
1280×72013.19010342.54331543.3151481.0025504530
1280×72012.00382641.54396042.8138491.0032654829
1280×72010.64991941.94147543.2055711.0340214631
1280×72011.99936842.14558643.2148931.0020734330
1280×72011.03234242.54612943.1150671.5032294529
1280×72013.03339042.74413542.7166702.0055776027
1280×72012.53924142.74685342.7635901.0061264429
1280×72012.81666742.02148943.0966851.0054114328
1280×72012.21299143.44849542.9877992.0093924026

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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.

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