Laser & Optoelectronics Progress, Volume. 57, Issue 6, 061021(2020)
An Image Style Transformation Model Compression Algorithm for Mobile Terminal
Figures & Tables(9)
Fig. 1. Overall structure of model iterative optimization style transformation algorithm
Fig. 3. Network architecture before and after improvement. (a) Before improvement; (b) after improvement
Fig. 4. Style transformation scores before and after network model compression. (a) Before compression; (b) after compression
Fig. 5. Transformation scores of image with different styles after network model compression
Table 1. Number of network parameters at each layer
View tableTable 1. Number of network parameters at each layer
Layer Number of parameters Ratio of number of parameters /% Conv1 7776 0.4 Conv2 18432 1.1 Conv3 73728 4.4 Res1 294912 17.6 Res2 294912 17.6 Res3 294912 17.6 Res4 294912 17.6 Res5 294912 17.6 Deconv1 73728 4.4 Deconv2 18432 1.1 Deconv3 7776 0.4
Table 2. Comparison of number of parameters before and after model compression
View tableTable 2. Comparison of number of parameters before and after model compression
Layer Number of parameters Ratio of compression / % Before compression After compression Conv1 7776 7776 0 Conv2 18432 18432 0 Conv3 73728 73728 0 Res1 294912 53248 81.9 Res2 294912 53248 81.9 Res3 294912 53248 81.9 Res4 294912 53248 81.9 Res5 294912 53248 81.9 Deconv1 73728 73728 0 Deconv2 18432 18432 0 Deconv3 7776 7776 0 Total 1674432 363712 78.3
Table 3. Data related to the compressed model
View tableTable 3. Data related to the compressed model
Model Before compression After compression Compression ratio Speed-up ratio Size /MB Time /ms Size /MB Time /ms Wave 21.1 6937 4.4 4590 4.56 1.51 Feathers 21.1 6851 4.4 5314 4.56 1.29 Mosaic 21.1 6950 4.4 4421 4.56 1.57 Denoised 21.1 4420 4.4 3571 4.56 1.23
Table 4. Test results at mobile terminal
View tableTable 4. Test results at mobile terminal
Brand Model Installation time /s Initialization time /s CPU usage /% Huawei P10 Plus 3.85 0.83 1.00 Huawei Honor 9 3.31 0.72 0.13 Huawei Honor 7X 4.38 1.16 0.82 360 N5S 5.71 0.97 1.07 Vivo V173CA 5.15 1.56 1.78 Sony Xperia XA 9.47 1.38 4.27
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Fei Pei, Jinfeng Liu, Xiaohe Li. An Image Style Transformation Model Compression Algorithm for Mobile Terminal[J]. Laser & Optoelectronics Progress, 2020, 57(6): 061021
Paper Information
Category: Image Processing
Received: Sep. 11, 2019
Accepted: Nov. 19, 2019
Published Online: Mar. 6, 2020
The Author Email: Jinfeng Liu (850683631@qq.com)
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