论文标题
TransNet:类别级透明对象姿势估计
TransNet: Category-Level Transparent Object Pose Estimation
论文作者
论文摘要
透明对象对视觉感知系统提出了多个不同的挑战。首先,与不透明对象相比,他们缺乏区分视觉特征使透明的对象更难检测和本地化。即使人类也发现某些透明的表面几乎没有镜面反射或折射,例如玻璃门,难以感知。第二个挑战是,通常用于不透明对象感知的常见深度传感器由于其独特的反射特性而无法对透明对象进行准确的深度测量。出于这些挑战,我们观察到,同一类别中(例如杯子)内的透明对象实例看起来与彼此相比,而不是与同一类别的普通不透明对象相似。鉴于此观察结果,本文着手探讨类别级透明对象姿势估计的可能性,而不是实例级姿势估计。我们提出了TransNet,这是一种两阶段的管道,该管道学会使用局部深度完成和表面正常估计来估计类别级透明的对象姿势。在最近的大规模透明对象数据集中,根据姿势估计精度评估了TransNet,并将其与最先进的类别级别姿势估计方法进行了比较。该比较的结果表明,TransNet可以提高透明对象的姿势估计准确性,并从包括的消融研究中提高了关键发现,这表明未来改善了绩效的方向。
Transparent objects present multiple distinct challenges to visual perception systems. First, their lack of distinguishing visual features makes transparent objects harder to detect and localize than opaque objects. Even humans find certain transparent surfaces with little specular reflection or refraction, e.g. glass doors, difficult to perceive. A second challenge is that common depth sensors typically used for opaque object perception cannot obtain accurate depth measurements on transparent objects due to their unique reflective properties. Stemming from these challenges, we observe that transparent object instances within the same category (e.g. cups) look more similar to each other than to ordinary opaque objects of that same category. Given this observation, the present paper sets out to explore the possibility of category-level transparent object pose estimation rather than instance-level pose estimation. We propose TransNet, a two-stage pipeline that learns to estimate category-level transparent object pose using localized depth completion and surface normal estimation. TransNet is evaluated in terms of pose estimation accuracy on a recent, large-scale transparent object dataset and compared to a state-of-the-art category-level pose estimation approach. Results from this comparison demonstrate that TransNet achieves improved pose estimation accuracy on transparent objects and key findings from the included ablation studies suggest future directions for performance improvements.