UAV Video Transmission Method Based on Video Stream Slicing and Coding

Table 1. Comparison of indicators in transmission process
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Table 1. Comparison of indicators in transmission process
Image $x$ $y$ SSIM RMSE
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

Table 2. Quantitative description of 640×480 image quality

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Table 2. Quantitative description of 640×480 image quality

$x$	$y$	SSIM	RMSE
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

Table 3. Quantitative description of 1280×720 image quality

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Table 3. Quantitative description of 1280×720 image quality

$x$	$y$	SSIM	RMSE	$x$	$y$	SSIM	RMSE
Srcimage 1	Recimage 1	0.977228	2.680730	Srcimage 6	Recimage 6	0.975578	2.678446
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

Table 4. Performance comparison of different algorithms

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Table 4. Performance comparison of different algorithms

Algorithm	Image resolution	SSIM	RMSE	Total receivingtime/ms	Speed/(frame·s^-1)
JPEG(P=80, R=0)	640×480	0.935073	4.359058	25	45
JPEG(P=80, R=0)	1280×720
JPEG(P=60, R=10)	640×480	0.915425	5.187605	29	43
JPEG(P=60, R=10)	1280×720	0.907840	5.147938	45	38
JPEG2000	640×480	0.963516	3.124578	30	38
JPEG2000	1280×720	0.954521	3.061465	47	36
SVD(S=40, R=10)	640×480	0.937214	4.183163	24	48
SVD(S=40, R=10)	1280×720	0.934430	4.025180	46	32
SVD(S=50, R=10)	640×480	0.955571	3.217802	35	37
SVD(S=50, R=10)	1280×720	0.954312	3.118540	48	33
Proposed algorithm(R=10)	640×480	0.985472	1.650121	26	42
Proposed algorithm(R=10)	1280×720	0.972370	2.674558	43	28

Table 5. Statistical results of each parameter of collected and received images

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Table 5. 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)
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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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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