Digital sensors can lead to noisy results under many circumstances. To be able to remove the undesired noise from images, proper noise modeling and an accurate noise parameter estimation is crucial. In this project, we use a Poisson-Gaussian noise model for the raw-images captured by the sensor, as it fits the physical characteristics of the sensor closely. Moreover, we limit ourselves to the case where observed (noisy), and ground-truth (noise-free) image pairs are available. Using such pairs is beneficial for the noise estimation and is not widely studied in literature. Based on this model, we derive the theoretical maximum likelihood solution, discuss its practical implementation and optimization. Further, we propose two algorithms based on variance and cumulant statistics. Finally, we compare the results of our methods with two different approaches, a CNN we trained ourselves, and another one taken from literature. The comparison between all these methods shows that our algorithms outperform the others in terms of MSE and have good additional properties.
Learning to Generate Realistic Noisy Images via Pixel-level Noise-aware Adversarial Training
Tsinghua University（清华大学）；Shenzhen Institute of Future Media Technology（深圳未来媒体技术研究院）；ETH Zürich（苏黎世联邦理工学院）；Harvard University（哈佛大学）；Boston College（波士顿学院）
Hard Sample Aware Noise Robust Learning for Histopathology Image Classification
School of Artificial Intelligence, Beijing University of Posts and Telecommunications（北京邮电大学人工智能学院）；Beijing Chaoyang Hospital, Capital Medical University（首都医科大学附属北京朝阳医院）
Bregman geometry-aware split Gibbs sampling for Bayesian Poisson inverse problems
Institut Denis Poisson（德尼·泊松研究所）；CNRS（法国国家科学研究中心）；University of Tours（图尔大学）；Univ Rouen Normandie（鲁昂诺曼底大学）；INSA Rouen Normandie（鲁昂诺曼底国立应用科学学院）；Normandie Univ（诺曼底大学）；LITIS（信息、信号与图像处理实验室）；University of Toulouse（图卢兹大学）；IRIT（图卢兹计算机研究所）；INP-ENSEEIHT（图卢兹国立综合理工学院-高等电力、电子、计算机、水力与电信学院）；CEA（法国原子能和替代能源委员会）；University of Paris-Saclay（巴黎萨克雷大学）
California Polytechnic State University（加州州立理工大学）；University of Georgia（佐治亚大学）；Providence College（普罗维登斯学院）；University of Colorado Colorado Springs（科罗拉多大学科罗拉多斯普林斯分校）
DS6, Deformation-aware Semi-supervised Learning: Application to Small Vessel Segmentation with Noisy Training Data
Otto von Guericke University Magdeburg（马格德堡奥托·冯·格里克大学）；Erasmus MC（伊拉斯姆斯医学中心）；University of Copenhagen（哥本哈根大学）；German Center for Neurodegenerative Disease（德国神经退行性疾病中心）；Center for Behavioral Brain Sciences（行为脑科学中心）
