Reliable and Fast Humans Removed Visual Scene Representation

This paper introduces a reliable and fast method for scene representation from a single RGB frame, even with human occlusion. Our goal is to enhance vision-based spatial reasoning in dynamic environments where human presence varies over time. Once humans are detected, the method addresses two key challenges: estimating the level of visual obstruction and generating a scene descriptor with humans removed. The first is handled via a novel visual obstruction measure that prevents descriptor generation under high occlusion. The second is addressed by adapting the previously presented bubble descriptor so that surface regions corresponding to detected humans are deformed using a modified spherical interpolation method-eliminating the need for inpainting or reconstruction and enabling rapid computation. We validate our approach through extensive comparisons across multiple datasets, including two new datasets collected using both stationary and mobile robots. Results show comparable representation quality with a 14-44× reduction in computation time.