用视觉特征模拟大脑定位细胞,让机器人自动建立空间地图。
Visual Place Cell Encoding: A Computational Model for Spatial Representation and Cognitive Mapping
- 基于视觉特征聚类生成位置细胞激活模式。
- 能区分外观相似但位置不同的区域,适应环境变化。
- 无需运动或奖励信号,适合构建生物启发的空间认知系统。
本文提出视觉位置细胞编码(VPCE)模型,一种受生物启发的计算框架,通过机器人摄像头捕捉的图像提取高维外观特征,利用聚类方法生成视觉位置细胞的激活模式。每个聚类中心定义一个感受野,激活程度基于视觉相似性,采用径向基函数计算。实验验证了该模型生成的激活模式是否具备生物位置细胞的关键特性,包括空间邻近性、朝向一致性及边界区分能力。结果表明,即使缺乏运动线索或奖励驱动学习,结构化视觉输入也能生成类似位置细胞的空间表征,并有效区分外观相似但空间上不同的位置,且能适应环境变化(如墙体增减)。这表明视觉信息足以支持生物启发的认知地图构建。
原文摘要 · Abstract (English)
This paper presents the Visual Place Cell Encoding (VPCE) model, a biologically inspired computational framework for simulating place cell-like activation using visual input. Drawing on evidence that visual landmarks play a central role in spatial encoding, the proposed VPCE model activates visual place cells by clustering high-dimensional appearance features extracted from images captured by a robot-mounted camera. Each cluster center defines a receptive field, and activation is computed based on visual similarity using a radial basis function. We evaluate whether the resulting activation patterns correlate with key properties of biological place cells, including spatial proximity, orientation alignment, and boundary differentiation. Experiments demonstrate that the VPCE can distinguish between visually similar yet spatially distinct locations and adapt to environment changes such as the insertion or removal of walls. These results suggest that structured visual input, even in the absence of motion cues or reward-driven learning, is sufficient to generate place-cell-like spatial representations and support biologically inspired cognitive mapping.
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