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Smartphone cameras have gained immense popularity with the adoption of high-resolution and high-dynamic range imaging. As a result, high-performance camera Image Signal Processors (ISPs) are crucial in generating high-quality images for the…

A number of image-processing problems can be formulated as optimization problems. The objective function typically contains several terms specifically designed for different purposes. Parameters in front of these terms are used to control…

Medical Physics · Physics 2017-11-02 Chenyang Shen , Yesenia Gonzalez , Liyuan Chen , Steve B. Jiang , Xun Jia

In recent years, there has been a growing trend in computer vision towards exploiting RAW sensor data, which preserves richer information compared to conventional low-bit RGB images. Early studies mainly focused on enhancing visual quality,…

Computer Vision and Pattern Recognition · Computer Science 2025-09-18 Kai Chen , Jin Xiao , Leheng Zhang , Kexuan Shi , Shuhang Gu

We propose a trainable Image Signal Processing (ISP) framework that produces DSLR quality images given RAW images captured by a smartphone. To address the color misalignments between training image pairs, we employ a color-conditional ISP…

Computer Vision and Pattern Recognition · Computer Science 2022-07-13 Ardhendu Shekhar Tripathi , Martin Danelljan , Samarth Shukla , Radu Timofte , Luc Van Gool

We present an efficient subpixel refinement method usinga learning-based approach called Linear Predictors. Two key ideas are shown in this paper. Firstly, we present a novel technique, called Symbolic Linear Predictors, which makes the…

Computer Vision and Pattern Recognition · Computer Science 2018-05-01 Vincent Lui , Jonathon Geeves , Winston Yii , Tom Drummond

Challenging illumination conditions (low-light, under-exposure and over-exposure) in the real world not only cast an unpleasant visual appearance but also taint the computer vision tasks. After camera captures the raw-RGB data, it renders…

Computer Vision and Pattern Recognition · Computer Science 2022-10-11 Ziteng Cui , Kunchang Li , Lin Gu , Shenghan Su , Peng Gao , Zhengkai Jiang , Yu Qiao , Tatsuya Harada

In smartphones and compact cameras, the Image Signal Processor (ISP) transforms the RAW sensor image into a human-readable sRGB image. Most popular super-resolution methods depart from a sRGB image and upscale it further, improving its…

Image and Video Processing · Electrical Eng. & Systems 2023-12-27 Marcos V. Conde , Florin Vasluianu , Radu Timofte

In recent years, there has been widespread attention drawn to convolutional neural network (CNN) based blind image quality assessment (IQA). A large number of works start by extracting deep features from CNN. Then, those features are…

Computer Vision and Pattern Recognition · Computer Science 2022-09-30 Tongda Xu , Yifan Shao , Yan Wang , Hongwei Qin

Denoising is omnipresent in image processing. It is usually addressed with algorithms relying on a set of hyperparameters that control the quality of the recovered image. Manual tuning of those parameters can be a daunting task, which calls…

Image and Video Processing · Electrical Eng. & Systems 2024-01-19 Arthur Floquet , Sayantan Dutta , Emmanuel Soubies , Duong Hung Pham , Denis Kouame

Object detection models are typically applied to standard RGB images processed through Image Signal Processing (ISP) pipelines, which are designed to enhance sensor-captured RAW images for human vision. However, these ISP functions can lead…

Computer Vision and Pattern Recognition · Computer Science 2025-07-22 Shani Gamrian , Hila Barel , Feiran Li , Masakazu Yoshimura , Daisuke Iso

Recent work has explored optimizing image signal processing (ISP) pipelines for various tasks by composing predefined modules and adapting them to task-specific objectives. However, jointly optimizing module sequences and parameters remains…

Computer Vision and Pattern Recognition · Computer Science 2026-04-09 Jiyun Won , Heemin Yang , Woohyeok Kim , Jungseul Ok , Sunghyun Cho

Single-pixel imaging (SPI) uses a single-pixel detector to create an image of an object. SPI relies on a computer to construct an image, thus increasing both the size and cost of SPI and limiting its application. We developed instant…

Image and Video Processing · Electrical Eng. & Systems 2020-02-04 Zhe Yang , Jun Liu , Wei-Xing Zhang , Dong Ruan , Jun-Lin Li

In this article, we introduce a new technique for precision tuning. This problem consists of finding the least data types for numerical values such that the result of the computation satisfies some accuracy requirement. State of the art…

Programming Languages · Computer Science 2021-03-10 Assalé Adjé , Dorra Ben Khalifa , Matthieu Martel

In dynamic scenes, images often suffer from dynamic blur due to superposition of motions or low signal-noise ratio resulted from quick shutter speed when avoiding motions. Recovering sharp and clean results from the captured images heavily…

Computer Vision and Pattern Recognition · Computer Science 2022-03-24 Cheng Zhang , Shaolin Su , Yu Zhu , Qingsen Yan , Jinqiu Sun , Yanning Zhang

The goal of image restoration (IR), a fundamental issue in computer vision, is to restore a high-quality (HQ) image from its degraded low-quality (LQ) observation. Multiple HQ solutions may correspond to an LQ input in this poorly posed…

Computer Vision and Pattern Recognition · Computer Science 2023-05-24 Zeyu Xiao , Jiawang Bai , Zhihe Lu , Zhiwei Xiong

Traditional image quality assessment (IQA) methods rely on mean opinion scores (MOS), which are resource-intensive to collect and fail to provide interpretable, localized feedback on specific image distortions. We overcome these limitations…

Computer Vision and Pattern Recognition · Computer Science 2026-05-05 Fadeel Sher Khan , Long N. Le , Abhinau K. Venkataramanan , Seok-Jun Lee , Hamid R. Sheikh

Guided upsampling is an effective approach for accelerating high-resolution image processing. In this paper, we propose a simple yet effective guided upsampling method. Each pixel in the high-resolution image is represented as a linear…

Computer Vision and Pattern Recognition · Computer Science 2023-07-20 Shuangbing Song , Fan Zhong , Tianju Wang , Xueying Qin , Changhe Tu

With the rapid evolution of the Text-to-Image (T2I) model in recent years, their unsatisfactory generation result has become a challenge. However, uniformly refining AI-Generated Images (AIGIs) of different qualities not only limited…

Computer Vision and Pattern Recognition · Computer Science 2024-01-03 Chunyi Li , Haoning Wu , Zicheng Zhang , Hongkun Hao , Kaiwei Zhang , Lei Bai , Xiaohong Liu , Xiongkuo Min , Weisi Lin , Guangtao Zhai

Atomic scale characterization and manipulation with scanning probe microscopy rely upon the use of an atomically sharp probe. Here we present automated methods based on machine learning to automatically detect and recondition the quality of…

Mesoscale and Nanoscale Physics · Physics 2018-03-26 Mohammad Rashidi , Robert A. Wolkow

Numerical software is usually shipped with built-in hyperparameters. By carefully tuning those hyperparameters, significant performance enhancements can be achieved for specific applications. We developed MindOpt Tuner, a new automatic…

Mathematical Software · Computer Science 2023-07-18 Mengyuan Zhang , Wotao Yin , Mengchang Wang , Yangbin Shen , Peng Xiang , You Wu , Liang Zhao , Junqiu Pan , Hu Jiang , KuoLing Huang