Vanishing point estimation inspired by oblique effect in a field environment

IF 3.1 3区 工程技术 Q2 NEUROSCIENCES Cognitive Neurodynamics Pub Date : 2024-04-01 DOI:10.1007/s11571-024-10102-3
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Abstract

Estimating a vanishing point (VP) is a core problem for understanding three-dimensional scenes and autonomous navigation. Existing methods are essential to estimating VPs in indoor and urban environments. However, doing so in diverse, unstructured, changing, and unexpected field environments remains a considerable challenge. Traditional methods of estimating structural VP have some shortcomings as they rely heavily on feature-intensive computation, making them less reliable due to a lack of adequate structures in a field environment due to disorganized disturbances. Inspired by the oblique effect, neurons prefer to respond to horizontal and vertical stimuli more than to diagonal, which can help estimate VPs. This study proposes a methodology to estimate VPs from a monocular camera for a field environment. Local orientation features are assigned to clusters inspired by the oblique effect. By extracting end points of different clusters, virtual local orientation features are reshaped. Based on geometric inferences of orientation, a VP is approximately estimated using optimal estimation and self-selectability. No prior training is needed, and camera calibration and internal parameters are not required. This approach is robust to changes in color and illumination using geometric inference, making it a perfect fit for field environments. Experimental results demonstrated that the method can successfully estimate VPs. This study presents a groundbreaking approach to evaluating VPs using a monocular camera. Inspired by the oblique effect, our method relies on explainable geometric inferences instead of prior training, resulting in a highly robust model that can handle changes in color and illumination. Our proposed approach significantly advances scene understanding and navigation, making it an ideal solution for field environments.

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野外环境中受斜效应启发的消失点估算
摘要 估算消失点(VP)是理解三维场景和自主导航的核心问题。现有方法对于估算室内和城市环境中的消失点至关重要。然而,要在多样化、非结构化、多变和突发的野外环境中做到这一点,仍然是一个相当大的挑战。传统的结构性可变声像图估算方法存在一些缺陷,因为它们严重依赖于特征密集型计算,在野外环境中由于无序干扰而缺乏足够的结构,因此可靠性较低。受斜线效应的启发,神经元更倾向于对水平和垂直刺激做出反应,而非对角线刺激,这有助于估算 VP。本研究提出了一种从单目摄像头估算野外环境中 VPs 的方法。受斜视效应的启发,局部方向特征被分配到集群中。通过提取不同簇的端点,重塑虚拟局部方位特征。根据方位的几何推断,利用最优估算和自选择性近似估算 VP。无需事先训练,也不需要相机校准和内部参数。这种方法利用几何推理对颜色和光照的变化具有鲁棒性,因此非常适合野外环境。实验结果表明,该方法可以成功地估算出 VPs。本研究提出了一种使用单目摄像头评估 VP 的开创性方法。受斜视效应的启发,我们的方法依赖于可解释的几何推理,而不是事先的训练,从而产生了一个能处理颜色和光照变化的高鲁棒性模型。我们提出的方法大大提高了场景理解和导航能力,是野外环境的理想解决方案。
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来源期刊
Cognitive Neurodynamics
Cognitive Neurodynamics 医学-神经科学
CiteScore
6.90
自引率
18.90%
发文量
140
审稿时长
12 months
期刊介绍: Cognitive Neurodynamics provides a unique forum of communication and cooperation for scientists and engineers working in the field of cognitive neurodynamics, intelligent science and applications, bridging the gap between theory and application, without any preference for pure theoretical, experimental or computational models. The emphasis is to publish original models of cognitive neurodynamics, novel computational theories and experimental results. In particular, intelligent science inspired by cognitive neuroscience and neurodynamics is also very welcome. The scope of Cognitive Neurodynamics covers cognitive neuroscience, neural computation based on dynamics, computer science, intelligent science as well as their interdisciplinary applications in the natural and engineering sciences. Papers that are appropriate for non-specialist readers are encouraged. 1. There is no page limit for manuscripts submitted to Cognitive Neurodynamics. Research papers should clearly represent an important advance of especially broad interest to researchers and technologists in neuroscience, biophysics, BCI, neural computer and intelligent robotics. 2. Cognitive Neurodynamics also welcomes brief communications: short papers reporting results that are of genuinely broad interest but that for one reason and another do not make a sufficiently complete story to justify a full article publication. Brief Communications should consist of approximately four manuscript pages. 3. Cognitive Neurodynamics publishes review articles in which a specific field is reviewed through an exhaustive literature survey. There are no restrictions on the number of pages. Review articles are usually invited, but submitted reviews will also be considered.
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