SAM-6D: Segment Anything Model Meets Zero-Shot 6D Object Pose Estimation
Authors: Jiehong Lin, Lihua Liu, Dekun Lu, Kui Jia

Zero-shot 6D object pose estimation involves the detection of novel objects with their 6D poses in cluttered scenes presenting significant challenges for model generalizability. Fortunately the recent Segment Anything Model (SAM) has showcased remarkable zero-shot transfer performance which provides a promising solution to tackle this task. Motivated by this we introduce SAM-6D a novel framework designed to realize the task through two steps including instance segmentation and pose estimation. Given the target objects SAM-6D employs two dedicated sub-networks namely Instance Segmentation Model (ISM) and Pose Estimation Model (PEM) to perform these steps on cluttered RGB-D images. ISM takes SAM as an advanced starting point to generate all possible object proposals and selectively preserves valid ones through meticulously crafted object matching scores in terms of semantics appearance and geometry. By treating pose estimation as a partial-to-partial point matching problem PEM performs a two-stage point matching process featuring a novel design of background tokens to construct dense 3D-3D correspondence ultimately yielding the pose estimates. Without bells and whistles SAM-6D outperforms the existing methods on the seven core datasets of the BOP Benchmark for both instance segmentation and pose estimation of novel objects.