A person is sitting in front of a dining table, looking at a sheet of paper on the table. The paper has a diagram of a hand on it, with different parts labeled. The hand is made up of a skeleton, with the fingers and thumb labeled. The person is also looking at a poster of the hand diagram on a wall behind them. In the background, there are several apples scattered on the table. The apples are of different sizes and colors, and they are all placed in a random pattern. There is also a potted plant visible in the background, with a vase on top of it. On the left side of the image, there is a chair with a person sitting in it. The person is facing the table and is looking at the hand diagram. On the right side of the image, there is a microscope placed on a table. The microscope is open and has a slide in it, with a cell labeled "HeLa" on it. Overall, the image shows a person studying and looking at a diagram of a hand, with apples and a potted plant in the background. There is also a chair and a microscope visible in the image. Text transcribed from the image: ISCAS NANYANG TECHNOLOGICAL UNIVERSITY ④ 中国科学院大学 University of Chinese Academy of Sciences 2S-UDF: A Novel Two-stage U Model Recon: Junkai Deng Fei Hou OBJECTIVE Our objective is to reconstruct non-watertight models from multi-view images. Stage 1: Approx We use the NeuS We map the dista RELATED NeuralUDF [1] Introduces indicator function increasing rendering complexity and volatileness. NeUDF [2] Requires numerical approximation of unbounded integral. NeAT [3] Requires object masks for training. -PIPELINE Dist. Pred. Rendering Softplus MLP Color Pred. MLP Param. BG. Pred. MLP "Key Stages" 1 & 2 Background Composition Stable: No unbo Rendered Image Stage 2: UDF R We directly map ΠΑ DE Neu Loss GT Image