Vehicle Size Measurement and Information Identification Using an Improved DenseNet Approach

Table 1. Length, width, and height of different styles of Cadillac CT6
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Table 1. Length, width, and height of different styles of Cadillac CT6
Vehicle model Length /mm Width /mm Height /mm
Cadillac CT6 2023 5223 1890 1480
Cadillac CT6 2022 5223 1879 1498
Cadillac CT6 2017 5179 1879 1500

Table 2. Detailed parameters of buses and two-axle trucks

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Table 2. Detailed parameters of buses and two-axle trucks

Manufacturer	Use	Specific model	Number of axles	Length /mm	Width /mm	Height /mm
Yutong	bus	ZK6808BEVQ1	2	8045	2360	3260
Shaanxi automobile	van truck	SX5049XXYBEV331L	2	5995	2300	3130
Farizon commercial vehicle	van truck	DNC5072XXYBEVK1	2	5995	2350	3320

Table 3. Comparison of different models on self-made data sets

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Table 3. Comparison of different models on self-made data sets

Method	RMSE /mm	MAE /mm	FLOPs /10⁶	Parameter quantity /10⁶
ResNet	191.43	147.16	1434.65	14.69
MobileNet V1	274.27	243.73	59.96	4.13
GhostNet	252.75	206.84	14.37	5.22
DenseNet	153.48	125.56	2868.44	8.25
Improved DenseNet	98.16	86.62	186.78	5.36

Table 4. Vehicle length prediction value
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Table 4. Vehicle length prediction value
Vehicle model Length /mm Predicted value /mm
Error /
%
BYD Qin 4707 4754.1 1.0
Audi Q5 4634 4709.9 1.8
DENZA D9 5250 5181.7 1.3
Yutong bus 8045 7958.3 1.1
Shaanxi automoobile van truck 5995 6048.9 0.9

Table 5. Vehicle width prediction value
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Table 5. Vehicle width prediction value
Vehicle model Length /mm Predicted value /mm
Error /
%
BYD Qin 1770 1791.2 1.2
Audi Q5 1893 1934.6 2.2
DENZA D9 1960 1914.2 2.3
Yutong bus 2360 2421.4 2.6
Shaanxi automoobile van truck 2300 2247.3 2.3

Table 6. Vehicle height prediction value
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Table 6. Vehicle height prediction value
Vehicle model Length /mm Predicted value /mm Error /%
BYD Qin 1487 1497.4 0.7
Audi Q5 1649 1675.3 1.6
DENZA D9 1920 1895.1 1.3
Yutong bus 3260 3299.12 1.2
Shaanxi automoobile van truck 3130 3155.04 0.8

Table 7. Tesla Model 3 parameter information
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Table 7. Tesla Model 3 parameter information
Number of axles Wheelbase /mm Front suspension Rear suspension Tire
2 2875 Double wishbone independent suspension Multi-link independent suspension 235/45 R18

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Shuanfeng Zhao, Jian Yao, Jia Li. Vehicle Size Measurement and Information Identification Using an Improved DenseNet Approach[J]. Laser & Optoelectronics Progress, 2024, 61(24): 2412001

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