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In modern smartphone cameras, the Image Signal Processor (ISP) is the core element that converts the RAW readings from the sensor into perceptually pleasant RGB images for the end users. The ISP is typically proprietary and handcrafted and…

Computer Vision and Pattern Recognition · Computer Science 2024-09-26 Omar Elezabi , Marcos V. Conde , Radu Timofte

The Image Signal Processor (ISP) is a fundamental component in modern smartphone cameras responsible for conversion of RAW sensor image data to RGB images with a strong focus on perceptual quality. Recent work highlights the potential of…

Computer Vision and Pattern Recognition · Computer Science 2025-05-16 Andrei Arhire , Radu Timofte

Image signal processors (ISPs) are historically grown legacy software systems for reconstructing color images from noisy raw sensor measurements. Each smartphone manufacturer has developed its ISPs with its own characteristic heuristics for…

Computer Vision and Pattern Recognition · Computer Science 2024-01-09 Matheus Souza , Wolfgang Heidrich

Modern smartphone camera quality heavily relies on the image signal processor (ISP) to enhance captured raw images, utilizing carefully designed modules to produce final output images encoded in a standard color space (e.g., sRGB).…

Image and Video Processing · Electrical Eng. & Systems 2024-07-16 Georgy Perevozchikov , Nancy Mehta , Mahmoud Afifi , Radu Timofte

Digital cameras transform sensor RAW readings into RGB images by means of their Image Signal Processor (ISP). Computational photography tasks such as image denoising and colour constancy are commonly performed in the RAW domain, in part due…

Image and Video Processing · Electrical Eng. & Systems 2022-09-23 Marcos V. Conde , Steven McDonagh , Matteo Maggioni , Aleš Leonardis , Eduardo Pérez-Pellitero

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

RAW to sRGB mapping, which aims to convert RAW images from smartphones into RGB form equivalent to that of Digital Single-Lens Reflex (DSLR) cameras, has become an important area of research. However, current methods often ignore the…

Computer Vision and Pattern Recognition · Computer Science 2024-01-05 Xuanhua He , Tao Hu , Guoli Wang , Zejin Wang , Run Wang , Qian Zhang , Keyu Yan , Ziyi Chen , Rui Li , Chenjun Xie , Jie Zhang , Man Zhou

Nowadays, many of the images captured are `observed' by machines only and not by humans, e.g., in autonomous systems. High-level machine vision models, such as object recognition or semantic segmentation, assume images are transformed into…

Computer Vision and Pattern Recognition · Computer Science 2023-05-05 Eli Schwartz , Alex Bronstein , Raja Giryes

Unprocessed sensor outputs (RAW images) potentially improve both low-level and high-level computer vision algorithms, but the lack of large-scale RAW image datasets is a barrier to research. Thus, reversed Image Signal Processing (ISP)…

Computer Vision and Pattern Recognition · Computer Science 2023-03-27 Junji Otsuka , Masakazu Yoshimura , Takeshi Ohashi

Conventional image signal processing (ISP) frameworks are designed to reconstruct an RGB image from a single raw measurement. As multi-camera systems become increasingly popular these days, it is worth exploring improvements in ISP…

Image and Video Processing · Electrical Eng. & Systems 2022-11-16 Ahmad Bin Rabiah , Qi Guo

RAW images are rarely shared mainly due to its excessive data size compared to their sRGB counterparts obtained by camera ISPs. Learning the forward and inverse processes of camera ISPs has been recently demonstrated, enabling…

Image and Video Processing · Electrical Eng. & Systems 2024-04-16 Woohyeok Kim , Geonu Kim , Junyong Lee , Seungyong Lee , Seung-Hwan Baek , Sunghyun Cho

As the revolutionary improvement being made on the performance of smartphones over the last decade, mobile photography becomes one of the most common practices among the majority of smartphone users. However, due to the limited size of…

Image and Video Processing · Electrical Eng. & Systems 2020-09-15 Linhui Dai , Xiaohong Liu , Chengqi Li , Jun Chen

RAW-to-sRGB mapping, or the simulation of the traditional camera image signal processor (ISP), aims to generate DSLR-quality sRGB images from raw data captured by smartphone sensors. Despite achieving comparable results to sophisticated…

Computer Vision and Pattern Recognition · Computer Science 2025-03-26 Yang Ren , Hai Jiang , Menglong Yang , Wei Li , Shuaicheng Liu

Image signal processors (ISPs) are historically grown legacy software systems for reconstructing color images from noisy raw sensor measurements. They are usually composited of many heuristic blocks for denoising, demosaicking, and color…

Computer Vision and Pattern Recognition · Computer Science 2022-03-23 Matheus Souza , Wolfgang Heidrich

As the popularity of mobile photography is growing constantly, lots of efforts are being invested now into building complex hand-crafted camera ISP solutions. In this work, we demonstrate that even the most sophisticated ISP pipelines can…

Computer Vision and Pattern Recognition · Computer Science 2020-02-14 Andrey Ignatov , Luc Van Gool , Radu Timofte

The entire Image Signal Processor (ISP) of a camera relies on several processes to transform the data from the Color Filter Array (CFA) sensor, such as demosaicing, denoising, and enhancement. These processes can be executed either by some…

As the quality of mobile cameras starts to play a crucial role in modern smartphones, more and more attention is now being paid to ISP algorithms used to improve various perceptual aspects of mobile photos. In this Mobile AI challenge, the…

In this paper, we propose a multi-objective camera ISP framework that utilizes Deep Reinforcement Learning (DRL) and camera ISP toolbox that consist of network-based and conventional ISP tools. The proposed DRL-based camera ISP framework…

Computer Vision and Pattern Recognition · Computer Science 2022-07-08 Ukcheol Shin , Kyunghyun Lee , In So Kweon

The quality of images captured by smartphones is an important specification since smartphones are becoming ubiquitous as primary capturing devices. The traditional image signal processing (ISP) pipeline in a smartphone camera consists of…

Image and Video Processing · Electrical Eng. & Systems 2021-08-29 Saumya Gupta , Diplav Srivastava , Umang Chaturvedi , Anurag Jain , Gaurav Khandelwal

This paper presents a modular neural image signal processing (ISP) framework that processes raw inputs and renders high-quality display-referred images. Unlike prior neural ISP designs, our method introduces a high degree of modularity,…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Mahmoud Afifi , Zhongling Wang , Ran Zhang , Michael S. Brown
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