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Polyp segmentation in colonoscopy is crucial for detecting colorectal cancer. However, it is challenging due to variations in the structure, color, and size of polyps, as well as the lack of clear boundaries with surrounding tissues.…

Computer Vision and Pattern Recognition · Computer Science 2024-12-12 Tapas Kumar Dutta , Snehashis Majhi , Deepak Ranjan Nayak , Debesh Jha

Recent advances in deep learning have shown that learning robust feature representations is critical for the success of many computer vision tasks, including medical image segmentation. In particular, both transformer and…

Computer Vision and Pattern Recognition · Computer Science 2025-02-03 David Li , Anvar Kurmukov , Mikhail Goncharov , Roman Sokolov , Mikhail Belyaev

Automatic polyp segmentation is helpful to assist clinical diagnosis and treatment. In daily clinical practice, clinicians exhibit robustness in identifying polyps with both location and size variations. It is uncertain if deep segmentation…

Computer Vision and Pattern Recognition · Computer Science 2024-10-23 Runpu Wei , Zijin Yin , Kongming Liang , Min Min , Chengwei Pan , Gang Yu , Haonan Huang , Yan Liu , Zhanyu Ma

Most polyp segmentation methods use CNNs as their backbone, leading to two key issues when exchanging information between the encoder and decoder: 1) taking into account the differences in contribution between different-level features and…

Image and Video Processing · Electrical Eng. & Systems 2024-02-20 Bo Dong , Wenhai Wang , Deng-Ping Fan , Jinpeng Li , Huazhu Fu , Ling Shao

Non-contrast CT (NCCT) imaging may reduce image contrast and anatomical visibility, potentially increasing diagnostic uncertainty. In contrast, contrast-enhanced CT (CECT) facilitates the observation of regions of interest (ROI). Leading…

Image and Video Processing · Electrical Eng. & Systems 2024-11-18 Tingyi Lin , Pengju Lyu , Jie Zhang , Yuqing Wang , Cheng Wang , Jianjun Zhu

Data scarcity hinders deep learning for medical imaging. We propose a framework for breast cancer classification in thermograms that addresses this using a Diffusion Probabilistic Model (DPM) for data augmentation. Our DPM-based…

Computer Vision and Pattern Recognition · Computer Science 2025-09-10 Sepehr Salem , M. Moein Esfahani , Jingyu Liu , Vince Calhoun

Accurate attenuation and scatter corrections are crucial in positron emission tomography (PET) imaging for accurate visual interpretation and quantitative analysis. Traditional methods relying on computed tomography (CT) or magnetic…

Medical Physics · Physics 2025-11-14 Min Jeong Cho , Hyeong Seok Shim , Sungyu Kim , Jae Sung Lee

Multi-centre colonoscopy images from various medical centres exhibit distinct complicating factors and overlays that impact the image content, contingent on the specific acquisition centre. Existing Deep Segmentation networks struggle to…

Image and Video Processing · Electrical Eng. & Systems 2023-08-31 Valentina Corbetta , Regina Beets-Tan , Wilson Silva

Colonoscopic polyp diagnosis is pivotal for early colorectal cancer detection, yet traditional automated reporting suffers from inconsistencies and hallucinations due to the scarcity of high-quality multimodal medical data. To bridge this…

Computer Vision and Pattern Recognition · Computer Science 2025-12-12 Tianyu Zhou , Junyi Tang , Zehui Li , Dahong Qian , Suncheng Xiang

In recent years, computational pathology has seen tremendous progress driven by deep learning methods in segmentation and classification tasks aiding prognostic and diagnostic settings. Nuclei segmentation, for instance, is an important…

Image and Video Processing · Electrical Eng. & Systems 2023-03-22 Aman Shrivastava , P. Thomas Fletcher

Accurate polyp segmentation is of great importance for colorectal cancer diagnosis. However, even with a powerful deep neural network, there still exists three big challenges that impede the development of polyp segmentation. (i) Samples…

Computer Vision and Pattern Recognition · Computer Science 2021-08-03 Jun Wei , Yiwen Hu , Ruimao Zhang , Zhen Li , S. Kevin Zhou , Shuguang Cui

Despite the advances in medicine, cancer has remained a formidable challenge. Particularly in the case of pancreatic tumors, characterized by their diversity and late diagnosis, early detection poses a significant challenge crucial for…

Image and Video Processing · Electrical Eng. & Systems 2024-06-06 Reza Babaei , Samuel Cheng , Theresa Thai , Shangqing Zhao

Deep learning techniques are increasingly being adopted in diagnostic medical imaging. However, the limited availability of high-quality, large-scale medical datasets presents a significant challenge, often necessitating the use of transfer…

Computer Vision and Pattern Recognition · Computer Science 2025-02-10 Heba El-Shimy , Hind Zantout , Michael A. Lones , Neamat El Gayar

Early identification of a polyp in the lower gastrointestinal (GI) tract can lead to prevention of life-threatening colorectal cancer. Developing computer-aided diagnosis (CAD) systems to detect polyps can improve detection accuracy and…

Image and Video Processing · Electrical Eng. & Systems 2022-06-01 Jan Andre Fagereng , Vajira Thambawita , Andrea M. Storås , Sravanthi Parasa , Thomas de Lange , Pål Halvorsen , Michael A. Riegler

Colorectal cancer (CRC) remains a significant cause of cancer-related mortality, despite the widespread implementation of prophylactic initiatives aimed at detecting and removing precancerous polyps. Although screening effectively reduces…

Computer Vision and Pattern Recognition · Computer Science 2026-02-11 Ahmed Rahu , Brian Shula , Brandon Combs , Aqsa Sultana , Surendra P. Singh , Vijayan K. Asari , Derrick Forchetti

Aside from offering state-of-the-art performance in medical image generation, denoising diffusion probabilistic models (DPM) can also serve as a representation learner to capture semantic information and potentially be used as an image…

Image and Video Processing · Electrical Eng. & Systems 2024-07-09 Chun-Mei Feng

Positron Emission Tomography (PET) and Computed Tomography (CT) are essential for diagnosing, staging, and monitoring various diseases, particularly cancer. Despite their importance, the use of PET/CT systems is limited by the necessity for…

Image and Video Processing · Electrical Eng. & Systems 2024-10-30 Dac Thai Nguyen , Trung Thanh Nguyen , Huu Tien Nguyen , Thanh Trung Nguyen , Huy Hieu Pham , Thanh Hung Nguyen , Thao Nguyen Truong , Phi Le Nguyen

Polyps are the predecessors to colorectal cancer which is considered as one of the leading causes of cancer-related deaths worldwide. Colonoscopy is the standard procedure for the identification, localization, and removal of colorectal…

Image and Video Processing · Electrical Eng. & Systems 2021-01-01 Saruar Alam , Nikhil Kumar Tomar , Aarati Thakur , Debesh Jha , Ashish Rauniyar

Medical image segmentation is crucial for accurate clinical diagnoses, yet it faces challenges such as low contrast between lesions and normal tissues, unclear boundaries, and high variability across patients. Deep learning has improved…

Image and Video Processing · Electrical Eng. & Systems 2024-12-09 Houze Liu , Tong Zhou , Yanlin Xiang , Aoran Shen , Jiacheng Hu , Junliang Du

Colonoscopy is considered the most effective screening test to detect colorectal cancer (CRC) and its precursor lesions, i.e., polyps. However, the procedure experiences high miss rates due to polyp heterogeneity and inter-observer…

Image and Video Processing · Electrical Eng. & Systems 2023-03-15 Debesh Jha , Nikhil Kumar Tomar , Vanshali Sharma , Ulas Bagci