In recent years, anchor and hash-based multi-view clustering methods have gained attention for their efficiency and simplicity in handling large-scale data. However, existing methods often overlook the interactions among multi-view data and higher-order cooperative relationships during projection, negatively impacting the quality of hash representation in low-dimensional spaces, clustering performance, and sensitivity to noise. To address this issue, we propose a novel approach named Tensor-Interacted Projection and Cooperative Hashing for Multi-View Clustering(TPCH). TPCH stacks multiple projection matrices into a tensor, taking into account the synergies and communications during the projection process. By capturing higher-order multi-view information through dual projection and Hamming space, TPCH employs an enhanced tensor nuclear norm to learn more compact and distinguishable hash representations, promoting communication within and between views. Experimental results demonstrate that this refined method significantly outperforms state-of-the-art methods in clustering on five large-scale multi-view datasets. Moreover, in terms of CPU time, TPCH achieves substantial acceleration compared to the most advanced current methods.

3D Gaussian Splatting (3DGS) has become one of the most promising 3D reconstruction technologies. However, label noise in real-world scenarios-such as moving objects, non-Lambertian surfaces, and shadows-often leads to reconstruction errors. Existing 3DGS-Bsed anti-noise reconstruction methods either fail to separate noise effectively or require scene-specific fine-tuning of hyperparameters, making them difficult to apply in practice. This paper re-examines the problem of anti-noise reconstruction from the perspective of epistemic uncertainty, proposing a novel framework, OCSplats. By combining key technologies such as hybrid noise assessment and observation-based cognitive correction, the accuracy of noise classification in areas with cognitive differences has been significantly improved. Moreover, to address the issue of varying noise proportions in different scenarios, we have designed a label noise classification pipeline based on dynamic anchor points. This pipeline enables OCSplats to be applied simultaneously to scenarios with vastly different noise proportions without adjusting parameters. Extensive experiments demonstrate that OCSplats always achieve leading reconstruction performance and precise label noise classification in scenes of different complexity levels.

A significant challenge facing current optical flow meth-ods is the difficulty in generalizing them well to the real world. This is mainly due to the lack of large-scale real-world datasets, and existing self-supervised methods are limited by indirect loss and occlusions, resulting in fuzzy outcomes. To address this challenge, we introduce a novel optical flow training framework: automatic data factory (ADF). ADF only requires RGB images as input to effectively train the optical flow network on the target data do-main. Specifically, we use advanced NeRF technology to reconstruct scenes from photo groups collected by a monoc-ular camera, and then calculate optical flow labels between camera pose pairs based on the rendering results. To elimi-nate erroneous labels caused by defects in the scene reconstructed by NeRF, we screened the generated labels from multiple aspects, such as optical flow matching accuracy, radiation field confidence, and depth consistency. The fil-tered labels can be directly used for network supervision. Experimentally, the generalization ability of ADF on KITTI surpasses existing self-supervised optical flow and monoc-ular scene flow algorithms. In addition, ADF achieves impressive results in real-world zero-point generalization evaluations and surpasses most supervised methods11Code: https://github.com/HanLingsgjk/UnifiedGeneralization.

This paper address the problem of optical expansion (OE). OE describes the object scale change between two frames, widely used in monocular 3D vision tasks. Previous methods estimate optical expansion mainly from optical flow results, but this two-stage architecture makes their results limited by the accuracy of optical flow and less robust. To solve these problems, we propose the concept of 3D optical flow by integrating optical expansion into the 2D optical flow, which is implemented by a plug-and-play module, namely TPCV. TPCV implements matching features at the correct location and scale, thus allowing the simultaneous optimization of optical flow and optical expansion tasks. Experimentally, we apply TPCV to the RAFT optical flow baseline. Experimental results show that the baseline optical flow performance is substantially improved. Moreover, we apply the optical flow and optical expansion results to various dynamic 3D vision tasks, including motion-in-depth, time-to-collision, and scene flow, often achieving significant improvement over the prior SOTA. Code is available at https://github.com/HanLingsgjk/TPCV.

This paper addresses the problem of normalized scene flow (NSF): given a pair of RGB video frames, estimating the 3D motion, which consisted of optical flow and motion-in-depth estimation. NSF is a powerful tool for action prediction and autonomous robot navigation, presenting the advantage of only needing a monocular and uncalibrated camera. However, most existing methods directly regress motion-in-depth from two RGB frames or optical flow, resulting in sub-accurate and non-robust results. Our key insight is the scale matching scheme-establishing correlations between two frames containing objects in different scales, to estimate dense and continuous motion-in-depth. Based on the scale matching, we propose a unified framework: Scale-flow, which combines scale matching and optical flow estimation. This combination makes optical flow estimation can use dense and continuous scale information for the first time, so that the moving foreground objects can be estimated more accurately. On KITTI, our monocular approach achieves the lowest error in the foreground scene flow task, even compared with the multi-camera method. Moreover, on the motion-in-depth estimation task, Scale-flow reduces the error by 34% compared with the best-published method. Code will be available.