自适应聚类的图像块分级DCT混合数模无线传输方法

doi:10.11959/j.issn.1000-436x.2024015

Abstract

Abstract:

In order to achieve high quality image transmission, a novel hybrid digital-analog (HDA) wireless transmission method was proposed.Firstly, the image residual layer was constructed by subtracting the downsampled and upsampled images from the original image respectively.Secondly, an adaptive-clustered block-level discrete cosine transform (DCT) algorithm was proposed to efficiently remove the correlation between image pixels in the residual layer.Finally, an image block level-based unequal power allocation strategy for further boosting the quality of received images was proposed.Extensive experiments results demonstrate that the proposed method is significantly superior to existing successful hybrid digital analog image wireless transmission methods in both qualitative evaluation and quantitative measurement.

Key words: hybrid digital-analog transmission, image wireless transmission, SoftCast, DCT, unequal power allocation

CLC Number:

TN919.8

Shu TANG, Peng YANG, Xianzhong XIE, Guangyi ZHOU, Jiaqing LI, Yu ZHAO. Adaptive-clustered image-block hierarchical DCT hybrid digital-analog wireless transmission method[J]. Journal on Communications, 2024, 45(1): 152-166.

Figures/Tables 12

B_w	方法	SNR=0		SNR=5 dB		SNR=10 dB		SNR=15 dB		SNR=20 dB		SNR=25 dB		SNR=30 dB
B_w	方法	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM
1.00	本文方法	29.13	0.769 9	32.92	0.879 4	37.38	0.948 2	42.05	0.980 4	47.03	0.993 0	51.95	0.997 2	56.93	0.998 7
	BlockSoftCast	27.04	0.716 2	30.75	0.837 6	35.14	0.9242	39.90	0.970 4	44.80	0.989 4	49.78	0.996 3	54.76	0.998 7
	LayerdSoftCast	28.05	0.709 9	31.71	0.833 6	36.08	0.922 5	40.82	0.9696	45.73	0.989 0	50.69	0.995 8	55.69	0.998 2
	SoftCast	24.87	0.694 3	28.84	0.817 8	33.25	0.910 4	38.05	0.963 6	42.97	0.9868	47.88	0.995 2	52.90	0.998 2
	SoftCast-IDCT	29.07	0.769 8	32.88	0.879 3	37.01	0.947 8	41.77	0.980 1	46.67	0.992 0	51.78	0.997 1	56.59	0.998 3
	EV-SoftCast	28.87	0.769 7	32.64	0.879 0	37.05	0.947 8	41.51	0.978 1	46.45	0.991 8	51.59	0.997 0	56.40	0.998 2
0.75	本文方法	29.06	0.766 7	32.70	0.875 1	36.65	0.936 1	40.28	0.960 1	43.02	0.977 8	44.73	0.981 5	45.52	0.982 5
	BlockSoftCast	26.98	0.710 2	30.54	0.827 2	34.37	0.909 0	37.80	0.951 8	40.24	0.969 3	41.59	0.975 5	42.18	0.977 5
	LayerdSoftCast	27.98	0.706 9	31.40	0.826 3	35.03	0.909 5	38.12	0.952 2	40.18	0.969 1	41.25	0.974 9	41.69	0.976 9
	SoftCast	24.79	0.689 6	28.63	0.808 8	32.67	0.897 1	36.30	0.945 7	39.04	0.966 3	40.66	0.973 7	41.45	0.976 1
	SoftCast-IDCT	28.66	0.766 2	32.31	0.874 2	36.35	0.935 8	39.98	0.959 7	42.74	0.977 6	44.49	0.981 1	45.14	0.982 0
	EV-SoftCast	28.59	0.766 4	32.19	0.874 0	36.18	0.935 5	39.76	0.959 4	42.59	0.977 5	44.20	0.979 8	44.96	0.981 8
0.50	本文方法	28.93	0.754 5	32.25	0.854 1	35.33	0.911 6	37.59	0.937 4	38.82	0.946 5	39.33	0.949 6	39.52	0.950 7
	BlockSoftCast	26.84	0.697 9	29.97	0.806 6	32.84	0.880 8	34.77	0.918 4	35.71	0.933 0	36.08	0.938 2	36.20	0.939 9
	LayerdSoftCast	27.79	0.698 1	30.80	0.812 2	33.46	0.887 7	35.18	0.924 6	35.99	0.938 9	36.30	0.943 6	36.41	0.945 2
	SoftCast	24.70	0.6824	28.34	0.795 1	31.69	0.875 1	34.13	0.918 0	35.52	0.935 3	36.12	0.941 5	36.33	0.943 5
	SoftCast-IDCT	28.79	0.754 3	32.01	0.853 9	35.11	0.911 3	37.27	0.937 0	38.53	0.946 1	39.01	0.949 2	39.19	0.9504
	EV-SoftCast	28.55	0.754 1	31.77	0.853 7	35.05	0.911 3	36.96	0.936 3	38.21	0.945 7	38.78	0.949 0	39.01	0.950 3
0.25	本文方法	28.47	0.724 2	30.90	0.806 8	32.56	0.851 1	33.37	0.869 8	33.67	0.876 1	33.76	0.878 1	33.82	0.878 8
	BlockSoftCast	26.30	0.668 7	28.51	0.760 8	29.93	0.819 4	30.58	0.846 4	30.82	0.856 8	30.90	0.860 3	30.93	0.861 4
	LayerdSoftCast	27.30	0.680 8	29.38	0.777 4	30.71	0.837 0	31.31	0.863 8	31.53	0.874 0	31.60	0.877 2	31.63	0.878 3
	SoftCast	24.45	0.6639	27.48	0.762 8	29.71	0.827 8	30.87	0.859 0	31.35	0.870 7	31.53	0.874 7	31.58	0.876 0
	SoftCast-IDCT	28.22	0.724 0	30.56	0.806 4	32.23	0.850 8	33.09	0.869 7	33.33	0.875 8	33.42	0.877 8	33.49	0.878 4
	EV-SoftCast	28.10	0.723 9	30.39	0.806 3	32.10	0.850 7	32.87	0.869 5	33.09	0.875 6	33.19	0.877 6	33.29	0.878 3

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K	复杂度
1	O (t)
2	O (t+2nj)
3	O (t+3nj)
4	O (t+4nj)
5	O (t+5nj)
6	O (t+6nj)
7	O (t+7nj)
8	O (t+8nj)
9	O (t+9nj)

方法			平均PSNR
方法	SNR=5 dB	SNR=10 dB	SNR=15 dB	SNR=20 dB	SNR=25 dB
本文方法	33.77	37.79	41.49	44.12	45.47
ComPaTS	32.22	36.68	40.35	42.57	43.95
BlockSoftCast	32.91	36.68	39.92	41.95	42.89
LayerdSoftCast	32.25	34.88	36.57	37.33	37.61
SoftCast	29.79	33.20	35.72	37.04	37.58
SoftCast-IDCT	33.59	37.60	41.22	44.01	45.24
EV-SoftCast	33.31	37.41	41.09	43.89	45.09

方法	计算时间/s
方法	第1次	第2次	第3次	第4次	第5次	平均
本文方法	0.377	0.447	0.379	0.378	0.388	0.394
BlockSoftCast	0.520	0.513	0.530	0.537	0.515	0.523
LayerdSoftCast	0.227	0.225	0.222	0.228	0.229	0.226
SoftCast	0.198	0.183	0.176	0.177	0.176	0.182
SoftCast-IDCT	0.490	0.501	0.515	0.506	0.485	0.4994
EV-SoftCast	0.202	0.209	0.201	0.198	0.211	0.2042

Adaptive-clustered image-block hierarchical DCT hybrid digital-analog wireless transmission method

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