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This paper presents a novel approach for performing computations using Look-Up Tables (LUTs) tailored specifically for Compute-in-Memory applications. The aim is to address the scalability challenges associated with LUT-based computation by…

Hardware Architecture · Computer Science 2023-11-20 Peyman Dehghanzadeh , Baibhab Chatterjee , Swarup Bhunia

Lookup-table (LUT) based neural networks can deliver ultra-low latency and excellent hardware efficiency on FPGAs by mapping arithmetic operations directly onto the logic primitives. However, state-of-the-art LUT-aware training (LAT)…

Hardware Architecture · Computer Science 2026-04-27 Chang Sun , Zhiqiang Que , Bakhtiar Zadeh , Qibin Liu , Kevin H. Alvarez , Wayne Luk , Maria Spiropulu

Large language models (LLMs) are increasingly deployed on edge devices. To meet strict resource constraints, real-world deployment has pushed LLM quantization from 8-bit to 4-bit, 2-bit, and now 1.58-bit. Combined with lookup table…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-04-15 Xiangyu Li , Chengyu Yin , Weijun Wang , Jianyu Wei , Ting Cao , Yunxin Liu

Lookup tables (LUTs) have recently gained attention as an alternative compute mechanism that maps input operands to precomputed results, eliminating the need for arithmetic logic. LUTs not only reduce logic complexity, but also naturally…

Hardware Architecture · Computer Science 2026-04-07 Junguk Hong , Changmin Shin , Sukjin Kim , Si Ung Noh , Taehee Kwon , Seongyeon Park , Hanjun Kim , Youngsok Kim , Jinho Lee

Deep learning-based image enhancement methods face a fundamental trade-off between computational efficiency and representational capacity. For example, although a conventional three-dimensional Look-Up Table (3D LUT) can process a degraded…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Liubing Hu , Chen Wu , Anrui Wang , Dianjie Lu , Guijuan Zhang , Zhuoran Zheng

In this paper, we introduce a new approach for high-quality multi-exposure image fusion (MEF). We show that the fusion weights of an exposure can be encoded into a 1D lookup table (LUT), which takes pixel intensity value as input and…

Computer Vision and Pattern Recognition · Computer Science 2023-09-22 Ting Jiang , Chuan Wang , Xinpeng Li , Ru Li , Haoqiang Fan , Shuaicheng Liu

The image enhancement methods based on 3D lookup tables (3D LUTs) efficiently reduce both model size and runtime by interpolating pre-calculated values at the vertices. However, the 3D LUT methods have a limitation due to their lack of…

Image and Video Processing · Electrical Eng. & Systems 2025-08-25 Wontae Kim , Keuntek Lee , Nam Ik Cho

Low-light image enhancement (LIE) aims at precisely and efficiently recovering an image degraded in poor illumination environments. Recent advanced LIE techniques are using deep neural networks, which require lots of low-normal light image…

Computer Vision and Pattern Recognition · Computer Science 2024-09-30 Yunlong Lin , Zhenqi Fu , Kairun Wen , Tian Ye , Sixiang Chen , Ge Meng , Yingying Wang , Yue Huang , Xiaotong Tu , Xinghao Ding

Lookup tables (LUTs) are frequently used to efficiently store arrays of precomputed values for complex mathematical computations. When used in the context of neural networks, these functions exhibit a lack of recognizable patterns which…

Hardware Architecture · Computer Science 2025-01-03 Oliver Cassidy , Marta Andronic , Samuel Coward , George A. Constantinides

Recently, many algorithms have employed image-adaptive lookup tables (LUTs) to achieve real-time image enhancement. Nonetheless, a prevailing trend among existing methods has been the employment of linear combinations of basic LUTs to…

Computer Vision and Pattern Recognition · Computer Science 2024-01-04 Kang Fu , Yicong Peng , Zicheng Zhang , Qihang Xu , Xiaohong Liu , Jia Wang , Guangtao Zhai

Deep Neural Networks (DNNs) typically require massive amount of computation resource in inference tasks for computer vision applications. Quantization can significantly reduce DNN computation and storage by decreasing the bitwidth of…

3D lookup tables (3D LUTs) are a key component for image enhancement. Modern image signal processors (ISPs) have dedicated support for these as part of the camera rendering pipeline. Cameras typically provide multiple options for picture…

Computer Vision and Pattern Recognition · Computer Science 2023-12-27 Marcos V. Conde , Javier Vazquez-Corral , Michael S. Brown , Radu Timofte

Super-resolution of LiDAR range images is crucial to improving many downstream tasks such as object detection, recognition, and tracking. While deep learning has made a remarkable advances in super-resolution techniques, typical…

Robotics · Computer Science 2022-03-15 Youngsun Kwon , Minhyuk Sung , Sung-Eui Yoon

Image Quality Transfer (IQT) aims to enhance the contrast and resolution of low-quality medical images, e.g. obtained from low-power devices, with rich information learned from higher quality images. In contrast to existing IQT methods…

Image and Video Processing · Electrical Eng. & Systems 2024-11-12 Ahmed Karam Eldaly , Matteo Figini , Daniel C. Alexander

Recently, several look-up table (LUT) methods were developed to greatly expedite the inference of CNNs in a classical strategy of trading space for speed. However, these LUT methods suffer from a common drawback of limited receptive field…

Computer Vision and Pattern Recognition · Computer Science 2025-10-14 Xi Zhang , Xiaolin Wu

Efficient all-digital post-correction of low-resolution analog-to-digital converters can be achieved by using Look-Up Tables (LUTs). The performance of a LUT can be optimized by incorporating a parametric model for the expected input…

Signal Processing · Electrical Eng. & Systems 2025-07-25 Morriel Kasher , Michael Tinston , Predrag Spasojevic

Quantizing deep neural networks is an effective method for reducing memory consumption and improving inference speed, and is thus useful for implementation in resource-constrained devices. However, it is still hard for extremely low-bit…

Computer Vision and Pattern Recognition · Computer Science 2021-11-03 Kohei Yamamoto

Qubit readout is a critical operation in quantum computing systems, which maps the analog response of qubits into discrete classical states. Deep neural networks (DNNs) have recently emerged as a promising solution to improve readout…

Quantum Physics · Physics 2026-05-01 M. A. Farooq , G. Di Guglielmo , A. Rajagopala , N. Tran , V. A. Chhabria , A. Arora

Deploying deep neural networks (DNNs) on resource-constrained edge devices such as FPGAs requires a careful balance among latency, power, and hardware resource usage, while maintaining high accuracy. Existing Lookup Table (LUT)-based DNNs…

Hardware Architecture · Computer Science 2026-01-16 Binglei Lou , Ruilin Wu , Philip Leong

Vision Transformers (ViT) have emerged as the de-facto choice for numerous industry grade vision solutions. But their inference cost can be prohibitive for many settings, as they compute self-attention in each layer which suffers from…

Computer Vision and Pattern Recognition · Computer Science 2024-07-18 Rajat Koner , Gagan Jain , Prateek Jain , Volker Tresp , Sujoy Paul