arXiv subjects

Zhang Ke

Publications and source records attributed to Zhang Ke.

4 recordsLinked to original sources

arXiv2026

ConFusion: Continuous Fusion Space Learning for Fine-Grained Controllable Infrared and Visible Image Fusion

Controllable infrared-visible image fusion aims to integrate complementary thermal and structural information with flexible region-aware modulation, producing fused images that adapt to diverse user requirements and downstream tasks. However, existing methods typically rely on predefined discrete control conditions, leading to a sparse space that fails to support fine-grained modulation demands. To address this, we propose ConFusion, a novel framework that learns the continuous fusion space via Gaussian-conditioned spatial-aware modulation, enabling instance-level fine-grained controllable infrared and visible image fusion. ConFusion employs a dual-branch architecture to disentangle modality-invariant and modality-specific representations under joint reconstruction and text-guided semantic alignment. Gaussian-conditioned instance modulation variables coupled with Grounded SAM-based instance masks guide instance-level fine-grained modulation through the Mask-Guided Specific Feature Modulator, while the Text-Driven Invariant Feature Enhancer improves semantic consistency and enhances fusion. During inference, the multimodal large language model parses user intents into instance-level modulation variables to guide image fusion. Extensive experiments show that ConFusion achieves state-of-the-art performance across multiple metrics in both fusion quality and downstream tasks, while supporting fine-grained controllable image fusion. Our code is available at https://github.com/HeyufeiAnto/Confusion

cs.CV↗

arXiv2019

Universal precursor seismicity pattern before locked-segment rupture

Despite the enormous efforts towards searching for precursors, no precursors have exhibited real predictive power with respect to an earthquake thus far. Seismogenic locked segments that can accumulate adequate strain energy to cause major earthquakes are very heterogeneous and less brittle; progressive failures of the locked segments with these properties can produce an interesting seismic phenomenon: a characteristic earthquake and a sequence of smaller subsequent earthquakes (pre-shocks) always arise prior to another characteristic earthquake within a well-defined seismic zone and its current seismic period. Applying a mechanical model and magnitude constraint conditions, we show that two adjacent characteristic earthquakes reliably occur at the volume-expansion and peak-stress points of a locked segment. Such a seismicity pattern has occurred in 62 seismic zones worldwide, suggesting that the pattern applies universally. Both the precursor pattern and the model quantifying it permit the prediction of certain characteristic earthquakes in a seismic zone.

physics.geo-ph↗

arXiv2018

A physical model predicting instability of rock slopes with locked segments along a potential slip surface

Predicting the occurrence of landslides is important to prevent or reduce loss of lives and property. The stability of rock slopes is often dominated by one or more locked segments along a potential slip surface; these segments have relatively high strength and accumulate strain energy. Locked segments can be preliminarily classified into three categories: "rock bridge", "retaining wall" and "sustaining arch." Coupling a one-dimensional renormalization group model with the strain-softening constitutive relation of geo-materials considering the Weibull's distribution, a physical model for predicting the instability of slopes with locked segments is established. It is found that the ratio of the strain or displacement at the peak strength point to that at the volume dilation point for a locked segment is exclusively dependent on the Weibull's shape parameter m, and is approximately constant at 1.48. A corresponding accelerating displacement increment (tertiary creep) of the slope can be observed from the onset of the volume dilation of the locked segment due to its unsteady cracking. For a slope with multiple locked segments, one can predict its critical instability displacement value according to the accelerating displacement onset corresponding to the volume dilation point of the first locked segment and the number of locked segments. The back-analysis of two typical cases, the Yanchihe rockslide in China and the wedge rockslide, Libby Dam, USA, shows that their evolutionary processes, dominated respectively by one and two locked segments, follow this model, confirming the reliability of the proposed model.

physics.geo-ph↗

arXiv2018

Earthquake tendency of the Himalayan seismic belt

The theory about the brittle failures of multiple locked patches in a seismogenic fault system developed by us since 2010 is introduced in the present study. It is stated by the theory that the progressive failures of locked patch result in the occurrence of earthquakes due to fault movement, where the major earthquakes occurred at its volume expansion and peak strength points are referred to as characteristic ones. We analyze the seismogenic law of characteristic earthquakes in the Islamabad-Kathmandu seismic zone that extends along Himalayan seismic belt, and assess the seismicity trend of this zone by this theory. The results indicate that a MW 8.4 ~ 8.8 characteristic earthquake will strike the central Himalaya and the magnitude parameters of the 2015 Nepal earthquakes have a great impact on judging its occurrence time. When adopting the parameters by CEDC, the zone has almost reached the critical state and the expected characteristic one will take place in a short term (most likely within 10 years), probably with some less than or equal to MW 7.0 foreshocks. When adopting the parameters by NEIC, the occurrence time of the expected characteristic one cannot be judged at present until the critical state after the occurrence of some expected less than or equal to MW 8.1 preshocks is reached. Moreover, we reproduce the generation process of the 2015 Nepal earthquakes according to the self-similarity of seismogenic law for different-order locked patches.

physics.geo-ph↗