A Long-Range Lane Detection Method with Enhanced Spatial Perception

doi:10.12141/j.issn.1000-565X.250181

Abstract

Abstract:

Lane detection serves as a core technology for the visual navigation systems of intelligent vehicles. Its performance directly impacts a vehicle’s path guidance and steering control, which is of great significance for improving traffic safety and navigation efficiency. In lane images, background information often dominates, especially when distant lane markings exhibit challenges such as small feature size, absence, or occlusion, coupled with perspective-induced width variations. These issues make distant lane detection considerably more challenging than detecting nearby lanes. To address this problem, this paper proposed a lane detection method enhanced with spatial perception. Firstly, conside-ring the elongated morphology of lane markings in images, a strip-pooling module was incorporated into the backbone network to refine the representation of lane information. Furthermore, an Enhanced Spatial-Aware Optimizer (ESAO) was integrated with a Lane Multi-Scale Aggregator (LMSA) to suppress irrelevant background interference and enhance the features of distant lane markings, thereby improving the accuracy and robustness of lane detection. Finally, a global and local slope consistency loss function is designed to adaptively adjust the shape and position of lane lines, maintaining geometric consistency between the predicted lanes and the ground truth. Experimental evaluations conducted on the TuSimple and CULane benchmarks demonstrate that the proposed approach outperforms the state-of-the-art methods in comparative experiments. Specifically, it achieves improvements of 0.58 percentage points in F₁ score and 0.19 percen-tage points in accuracy on the TuSimple dataset, and 1.14 percentage points in F₁@50 on the CULane dataset. Notably, the method exhibits more stable performance, particularly in long-range road scenarios.

Key words: lane detection, long-range, strip pooling, enhanced spatial-aware optimizer (ESAO), lane multi-scale aggregator （LMSA）

CLC Number:

TP391.41

WANG Yaoqi, LU Yaqi, WANG Xiaopeng. A Long-Range Lane Detection Method with Enhanced Spatial Perception[J]. Journal of South China University of Technology(Natural Science Edition), 2026, 54(2): 62-76.

Figures/Tables 14

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Table 1

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Table 2

Experimental results of different methods on CULane dataset"

方法	主干网络	F₁@50/%	F₁@75/%	F_m1/%	F₁@50/%									FPS
方法	主干网络	F₁@50/%	F₁@75/%	F_m1/%	正常	拥挤	炫光	阴影	无线	箭头	曲线	十字路口	夜间	FPS
SCNN	VGG16	71.60	39.84	38.84	90.60	69.70	58.50	66.90	43.40	84.10	64.40	1 990	66.10	7.5
RESA	ResNet34	74.50			91.90	72.40	66.50	72.00	46.30	88.10	68.60	1 896	69.80	45.5
RESA	ResNet50	75.30	53.39	47.86	92.10	73.10	72.00	72.80	47.70	88.30	70.30	1 503	69.90	35.7
UFLD	ResNet18	68.40	40.01	38.94	87.70	66.00	58.40	62.80	40.20	81.00	57.90	1 743	62.10	282.0
UFLD	ResNet34	72.30			90.70	70.20	59.50	69.30	44.40	85.70	69.50	2 037	66.70	170.0
LaneATT	ResNet18	75.13	51.29	47.35	91.17	72.71	65.82	68.03	49.13	87.82	63.75	1 020	68.58	153.0
LaneATT	ResNet34	76.68	54.34	49.57	92.14	75.03	66.47	78.15	49.39	88.38	67.72	1 330	70.72	129.0
LaneATT	ResNet122	77.02	57.50	51.48	91.74	76.16	69.47	76.31	50.46	86.29	64.05	1 264	70.81	30.0
GANet	ResNet18	77.79	57.35	52.10	92.24	77.16	71.24	77.88	53.59	89.62	73.92	1 240	72.75	153.0
GANet	ResNet34	78.39	58.62	53.36	92.73	77.92	71.64	79.49	52.63	90.37	74.32	1 368	73.67	127.0
GANet	ResNet101	78.63	58.96	54.71	92.67	78.66	71.82	78.32	53.38	89.86	75.37	1 352	73.85	63.0
CondLane	ResNet18	78.14	57.42	51.84	91.87	75.79	70.72	80.01	52.39	89.37	72.40	1 364	73.23	173.0
CondLane	ResNet34	78.74	59.39	53.11	92.18	77.14	71.17	79.93	51.85	89.89	73.88	1 387	73.92	128.0
CondLane	ResNet101	79.28	61.13	54.83	92.47	77.44	70.93	80.91	53.13	90.16	75.21	1 201	74.80	47.0
CLRNet	ResNet18	78.58	61.21	55.23	92.30	78.33	72.71	79.66	53.14	90.25	71.56	1 321	75.11	160.0
CLRNet	ResNet34	78.93	61.11	55.14	92.49	78.06	73.27	79.92	54.01	90.59	72.77	1 213	75.02	125.0
CLRNet	ResNet101	79.35	61.96	55.55	92.85	78.78	71.49	82.33	54.50	89.79	74.57	1 262	75.51	53.0
CLRerNet	ResNet34	79.76	62.77	55.29	92.93	78.51	72.88	82.66	54.55	90.87	74.45	1 088	76.02	180.0
CLRerNet	ResNet101	79.91	63.30	55.62	91.91	78.03	71.98	82.12	53.73	90.53	73.83	1 113	76.13	54.0
E-CLRNet	ResNet18	79.87	62.59	55.35	93.65	78.28	74.81	80.95	53.84	90.47	74.26	1 198	75.16	147.0
文中方法	ResNet18	79.98	63.19	56.13	93.85	78.48	74.98	81.95	53.65	90.37	77.26	1 298	76.76	148.0
文中方法	ResNet34	80.47	62.87	56.04	93.92	78.73	76.03	82.41	54.79	90.91	77.91	1 172	76.44	128.0
文中方法	ResNet101	81.05	64.07	57.28	94.19	79.31	74.46	84.53	55.92	90.56	79.64	1 223	77.12	47.0

Table 2

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Table 3

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Table 4

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Table 5

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数据集	训练集	验证集	测试集	分辨率	道路类别
CULane	88 880	9 675	34 680	1 460 × 590	郊区、城市、高速
TuSimple	3 268	358	2 782	1 280 × 720	高速公路
CurveLanes	100 000	20 000	30 000	2 560 × 1 440	城市、高速

方法	主干网络	F₁/%	A_cc/%	R_FP/%	R_FN/%		方法	主干网络	F₁/%	A_cc/%	R_FP/%	R_FN/%
SCNN	VGG16	95.97	96.53	6.17	1.80		CondLane	ResNet18	97.01	95.48	2.18	3.80
RESA	ResNet34	96.93	96.82	3.63	2.48	CondLane		ResNet34	96.98	95.37	2.20	3.82
UFLD	ResNet18	87.87	95.82	19.05	3.92	CondLane		ResNet101	97.24	96.54	2.01	3.50
UFLD	ResNet34	88.02	95.86	18.91	3.75	CLRNet		ResNet18	97.39	96.54	2.28	1.96
LaneATT	ResNet18	96.71	95.57	3.56	3.01	CLRNet		ResNet34	97.32	96.57	2.27	2.08
LaneATT	ResNet34	96.77	95.63	3.53	2.92	CLRNet		ResNet101	97.12	96.53	2.37	2.38
LaneATT	ResNet122	96.06	96.10	5.64	2.17	文中方法		ResNet18	97.97	96.97	2.11	2.04
GANet	ResNet18	97.21	95.95	2.97	2.62	文中方法		ResNet34	97.73	97.01	1.98	2.19
GANet	ResNet34	97.18	95.87	2.99	2.64	文中方法		ResNet101	97.54	96.87	2.46	2.42
GANet	ResNet101	96.95	96.44	2.63	2.47

方法	主干网络	F₁@50/%	F₁@75/%	F_m1/%	P/%	R/%	FPS
SCNN	VGG16	65.02			76.13	56.74	8
UFLDv2	ResNet18	80.45	54.23	49.06	81.49	79.44	79
UFLDv2	ResNet34	81.34	56.49	50.48	81.93	80.76	46
CondLane	ResNet18	85.09	59.04	52.50	87.75	82.58	123
CondLane	ResNet34	85.92	61.07	53.76	88.29	83.68	87
CondLane	ResNet101	86.10	65.26	57.10	88.98	83.41	38
文中方法	ResNet18	87.26	68.27	59.01	90.32	84.58	143
文中方法	ResNet34	87.58	68.59	59.42	90.36	85.17	112
文中方法	ResNet101	87.83	69.60	59.98	90.74	85.22	46

ResNet18	SPM	ESAO	LMSA	KLoss	F₁@50/%	F₁@75/%
√					78.58	61.21
√	√				78.82	61.45
√		√			78.85	61.51
√			√		78.89	61.44
√				√	78.75	61.29
√	√	√			79.21	61.87
√	√	√	√		79.66	62.18
√	√	√	√	√	79.98	63.19