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Trajectory anomaly detection underpins applications from fraud detection to urban mobility analysis. Dense GPS methods preserve fine-grained evidence such as abnormal speeds and short-duration events, but their quadratic cost makes…

Computer Vision and Pattern Recognition · Computer Science 2026-03-27 Md Awsafur Rahman , Chandrakanth Gudavalli , Hardik Prajapati , B. S. Manjunath

In this paper we apply digital in-line holography to image opaque objects through a thick plano-concave pipe. Opaque fibers and opaque particles are considered}. Analytical expression of the intensity distribution in the CCD sensor plane is…

Optics · Physics 2012-12-21 Nicolas Verrier , Coëtmellec Sébastien , Brunel Marc , Lebrun Denis

We suggest a new multimodal imaging technique for quantitatively measuring the integral (thickness-average) refractive index of the nuclei of live biological cells in suspension. For this aim, we combined quantitative phase microscopy with…

Vision Transformers (ViTs) have demonstrated strong capabilities in interpreting complex medical imaging data. However, their significant computational and memory demands pose challenges for deployment in real-time, resource-constrained…

Image and Video Processing · Electrical Eng. & Systems 2025-11-05 Mikolaj Walczak , Uttej Kallakuri , Edward Humes , Xiaomin Lin , Tinoosh Mohsenin

Diffusion Transformer (DiT) architectures have significantly advanced Text-to-Image (T2I) generation but suffer from prohibitive computational costs and deployment barriers. To address these challenges, we propose an efficient compression…

Computer Vision and Pattern Recognition · Computer Science 2026-02-20 Chaojie Yang , Tian Li , Yue Zhang , Jun Gao

The possibility of using Infrared Lock-In Thermography (LIT) to estimate the thickness of a sample was assessed and shown to be accurate up to 1.8mm. LIT is a technique involving heating samples with halogen lamps with varying intensity…

Applied Physics · Physics 2018-10-15 Ming Hin Wong , Kok Hin Henry Goh

Developing deep learning models to analyze histology images has been computationally challenging, as the massive size of the images causes excessive strain on all parts of the computing pipeline. This paper proposes a novel deep…

Image and Video Processing · Electrical Eng. & Systems 2021-01-13 Joseph DiPalma , Arief A. Suriawinata , Laura J. Tafe , Lorenzo Torresani , Saeed Hassanpour

Previous works on multi-label image recognition (MLIR) usually use CNNs as a starting point for research. In this paper, we take pure Vision Transformer (ViT) as the research base and make full use of the advantages of Transformer with…

Computer Vision and Pattern Recognition · Computer Science 2022-04-25 Yunqing Hu , Xuan Jin , Yin Zhang , Haiwen Hong , Jingfeng Zhang , Feihu Yan , Yuan He , Hui Xue

Upconversion of low-energy photons to higher-energy photons provides an opportunity to surpass traditional limitations in fields such as 3D printing, photovoltaics, and photocatalysis. Triplet--triplet annihilation upconversion (TTA-UC) is…

Quantitative phase imaging (QPI) is often used for label-free single cell analysis with its high-contrast images of optical phase delay (OPD) map. Contrary to other imaging methods, sensitivity improvement has not been intensively explored…

Optics · Physics 2025-05-06 Keiichiro Toda , Miu Tamamitsu , Takuro Ideguchi

An organoid is a three-dimensional (3D) in vitro cell culture emulating human organs. We applied 3D dynamic optical coherence tomography (DOCT) to visualize the intratissue and intracellular activities of human induced pluripotent stem…

Diffusion Transformers (DiTs) excel at visual generation yet remain hampered by slow sampling. Existing training-free accelerators - step reduction, feature caching, and sparse attention - enhance inference speed but typically rely on a…

Computer Vision and Pattern Recognition · Computer Science 2025-09-29 Wangbo Zhao , Yizeng Han , Zhiwei Tang , Jiasheng Tang , Pengfei Zhou , Kai Wang , Bohan Zhuang , Zhangyang Wang , Fan Wang , Yang You

Open-set 3D macromolecule detection in cryogenic electron tomography eliminates the need for target-specific model retraining. However, strict VRAM constraints prohibit processing an entire 3D tomogram, forcing current methods to rely on…

Computer Vision and Pattern Recognition · Computer Science 2026-05-04 Ming-Yang Ho , Alberto Bartesaghi

Optical diffraction tomography (ODT) is a powerful technique for quantitative, label-free reconstruction of the three-dimensional refractive index (RI) distribution of biological samples. While ODT is well established for imaging thin,…

Diffusion Transformer (DiT), an emerging diffusion model for visual generation, has demonstrated superior performance but suffers from substantial computational costs. Our investigations reveal that these costs primarily stem from the…

Computer Vision and Pattern Recognition · Computer Science 2026-01-15 Wangbo Zhao , Yizeng Han , Jiasheng Tang , Kai Wang , Hao Luo , Yibing Song , Gao Huang , Fan Wang , Yang You

Sensing with undetected photons has become a vibrant, application-driven research domain with a special focus on the mid-infrared (mid-IR) wavelength region. Since the mid-IR contains spectral bands with highly specific and strong molecular…

High-energy X-ray diffraction methods can non-destructively map the 3D microstructure and associated attributes of metallic polycrystalline engineering materials in their bulk form. These methods are often combined with external stimuli…

Dynamic light scattering techniques are routinely used for numerous industrial and research applications, because they can give access to the motion spectrum of micro- and nano-objects, and therefore to particle sizes or visco-elastic…

Optics · Physics 2022-09-22 Guillaume Graciani , John T. King , Francois Amblard

Segment anything models (SAMs) are gaining attention for their zero-shot generalization capability in segmenting objects of unseen classes and in unseen domains when properly prompted. Interactivity is a key strength of SAMs, allowing users…

Image and Video Processing · Electrical Eng. & Systems 2024-03-18 Yiqing Shen , Jingxing Li , Xinyuan Shao , Blanca Inigo Romillo , Ankush Jindal , David Dreizin , Mathias Unberath

Synchrotron infrared hyperspectral microscopy is a label-free and non-invasive technique well suited for imaging of chemical events in situ. It can track the spatial and temporal distributions of molecules of interests in a specimen in its…

Biological Physics · Physics 2021-07-20 Hoi-Ying N. Holman , Wujun Zhao , Jennifer D. Nill , Liang Chen , Sankar Raju Narayanasamy , Tina Jeoh