Hongyu An

Position: Evaluation of Visual Processing Should Be Human-Centered, Not Metric-Centered

Jinfan Hu, Fanghua Yu, Zhiyuan You, Xiang Yin et autres

This position paper argues that the evaluation of modern visual processing systems should no longer be driven primarily by single-metric image quality assessment benchmarks, particularly in the era of generative and perception-oriented methods. Image restoration exemplifies this divergence: while objective IQA metrics …

Enhancing diagnostic safety with low iodine, low radiation CTPA classification using deep learning

Mingyao Hong, Tao Gu, Hongyu An, Fan Xu et autres

Pulmonary embolism (PE) is a life-threatening condition for which computed tomography pulmonary angiography (CTPA) is the standard diagnostic modality. However, conventional CTPA protocols require relatively high iodine contrast and radiation doses, raising concerns about renal injury and radiation exposure. In this study, …

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A respiratory motion analysis for guiding stereotactic arrhythmia radiotherapy motion management

Yuhao Wang, Yao Hao, Hongyu An, H. Michael Gach et autres

BACKGROUND: Stereotactic arrhythmia radiotherapy (STAR) treats ventricular tachycardia (VT) but requires internal target volume (ITV) expansions to compensate for cardiorespiratory motion. Respiratory 4D CTs (r4DCT) are commonly acquired for STAR patients to assess respiratory motion and determine the ITV expansion margin. Current …

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Abstract TP073: Glymphatic Dysfunction Is Impaired In Sickle Cell Disease And Associated With Microstructural Damage And Slower Processing Speed

Yan Mei Wang, Slim Fellah, Serguei V. Astafiev, Martin Reis et autres

Background: The role of waste clearance underlying brain injury and cognitive impairment in sickle cell disease (SCD) is understudied. Dilated perivascular spaces, a marker of glymphatic dysfunction, sleep disturbance, and chronic inflammation have been reported in individuals with SCD. We hypothesized that …

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Abstract A113: Reduced cerebral glutamine, as a metric of ischemic risk and brain health, associates with white matter microstructural impairment in adults with sickle cell anemia: an MR spectroscopy study

Mohammed Al-sabbagh, Slim Fellah, Serguei V. Astafiev, Amy E. Mirro et autres

Background: Over 50% of sickle cell anemia (SCA) patients will have silent or overt cerebral strokes, which have been linked to cognitive impairment. L-glutamine supplementation has been FDA approved to reduce vaso-occlusive crises frequency. However, glutamine’s effect on stroke and cognitive impairment …

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Abstract DP271: Sex Differences Exist in Cerebrovascular Reactivity in Children

Monica J. Lim, Igor Dedkov, Jingyi Zhang, Heather Quartuccio et autres

Background: Multiple studies have found a male prevalence in childhood ischemic stroke regardless of age. Causes for this sex difference are not fully understood. We hypothesized there may be potential differences in hemodynamic reserve, measured by cerebrovascular reactivity (CVR). Methods: Children ages …

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SANR: Scene-Aware Neural Representation for Light Field Image Compression with Rate-Distortion Optimization

Gai Zhang, Lv Tang, Hongyu An, Li Zhang et autres

Light field images capture multi-view scene information and play a crucial role in 3D scene reconstruction. However, their high-dimensional nature results in enormous data volumes, posing a significant challenge for efficient compression in practical storage and transmission scenarios. Although neural representation-based methods …

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The Tenth NTIRE 2025 Efficient Super-Resolution Challenge Report

Bin Ren, Hang Guo, Lei Sun, Zongwei Wu et autres

This paper presents a comprehensive review of the NTIRE 2025 Challenge on Single-Image Efficient Super-Resolution (ESR). The challenge aimed to advance the development of deep models that optimize key computational metrics, i.e., runtime, parameters, and FLOPs, while achieving a PSNR of at …

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The Tenth NTIRE 2025 Efficient Super-Resolution Challenge Report

Bin Ren, Hang Guo, Lei Sun, Zongwei Wu et autres

This paper presents a comprehensive review of the NTIRE 2025 Challenge on Single-Image Efficient Super-Resolution (ESR). The challenge aimed to advance the development of deep models that optimize key computational metrics, i.e., runtime, parameters, and FLOPs, while achieving a PSNR of at …

Spatial Degradation-Aware and Temporal Consistent Diffusion Model for Compressed Video Super-Resolution

Hongyu An, Xinfeng Zhang, Shijie Zhao, Li Zhang

Due to storage and bandwidth limitations, videos transmitted over the Internet often exhibit low quality, characterized by low-resolution and compression artifacts. Although video super-resolution (VSR) is an efficient video enhancing technique, existing VSR methods focus less on compressed videos. Consequently, directly applying …

Spatio-Temporal Distortion Aware Omnidirectional Video Super-Resolution

Hongyu An, Xinfeng Zhang, Zhang Li, Ruiqin Xiong

Omnidirectional videos (ODVs) provide an immersive visual experience by capturing the 360° scene. With the rapid advancements in virtual/augmented reality, metaverse, and generative artificial intelligence, the demand for high-quality ODVs is surging. However, ODVs often suffer from low resolution due to their …

Small metal artifact detection and inpainting in cardiac CT images

Trevor McKeown, H. Michael Gach, Hao Yao, Hongyu An et autres

Background: Quantification of cardiac motion on pre-treatment CT imaging for stereotactic arrhythmia radiotherapy patients is difficult due to the presence of image artifacts caused by metal leads of implantable cardioverter-defibrillators (ICDs). The CT scanners' onboard metal artifact reduction tool does not sufficiently …

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