QueryGaussian: Scalable and Training-Free Open-Vocabulary 3D Instance Retrieval
Researchers have introduced QueryGaussian, a novel framework designed for efficient and scalable open-vocabulary 3D instance retrieval. This training-free approach bypasses the memory and computational limitations of scene-level embedding methods by employing an instance-level query mechanism. QueryGaussian leverages pre-trained 2D vision models for prompt interpretation and uses a temporal fusion module with adaptive density clustering to enhance semantic-visual consistency and mitigate projection ambiguity. Experiments show that QueryGaussian achieves comparable accuracy to existing methods while significantly reducing GPU memory usage and accelerating inference, making it capable of handling city-scale scenes on consumer hardware. AI
IMPACT This framework could enable more efficient processing of large-scale 3D data for applications like autonomous driving and augmented reality.