This paper addresses two key limitations in existing image Signal processing (ISP) approaches: the suboptimal performance in low-light conditions and the lack of trainability in traditional ISP methods. To tackle thes...
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ISBN:
(纸本)9798350344868;9798350344851
This paper addresses two key limitations in existing image Signal processing (ISP) approaches: the suboptimal performance in low-light conditions and the lack of trainability in traditional ISP methods. To tackle these issues, we propose a novel, trainable ISP framework that incorporates both the strengths of traditional ISP techniques and advanced MultiScale Retinex (MSR) algorithms for night-time enhancement. Our method consists of three primary components: an ISP-based Luminance Harmonization layer to initially optimize luminance levels in RAW data, a deep learning-based MSR layer for nuanced decomposition of image components, and a specialized enhancement layer for both precise, regionspecific luminance enhancement and color denoising. The proposed approach is validated through rigorous experiments on machine vision benchmarks and objective visual quality indicators. Our results demonstrate not only a significant improvement over existing methods but also robust adaptability under diverse lighting conditions. This work offers a versatile ISP framework with promising applications beyond its immediate scope.
SAR image registration is an important processing procedure for change detection and target recognition. However, the registration performance is seriously influenced by Symmetric a Stable ( SaS) noises in SAR images....
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ISBN:
(纸本)9798350390155;9798350390162
SAR image registration is an important processing procedure for change detection and target recognition. However, the registration performance is seriously influenced by Symmetric a Stable ( SaS) noises in SAR images. In order to cancel the impact of SaS noises in SAR imageapplications, a new concept of Fractional Order Spectrum of Cumulant (FOS-C) and SAR image registration based on (FOS-C) are proposed for the first time in this paper. In the proposed method, the images are registered from coarse to precise in three steps. First, the coarse registration based on Fourier Transform is used to estimate the scaling and rotation differences between images. Second, the registration based on FOS-C is designed, and used to provide the rough position of the similar regions. third, the normalization crosscorrelation (NCC) algorithm based on FOS-C is used to achieve the fine registration. Experimental results show that our method outperforms SAR- SIFT and KAZE- SAR.
In the last decade, deep learning has rapidly advanced and achieved significant breakthroughs in the field of imageprocessing. This survey aims to provide a comprehensive overview of recent advancements in deep learn...
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Depth estimation is crucial for autonomous underwater vehicles (AUVs) to navigate effectively and understand their surroundings. While deep neural networks offer promising solutions for depth estimation, their efficac...
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ISBN:
(数字)9798350359886
ISBN:
(纸本)9798350359893;9798350359886
Depth estimation is crucial for autonomous underwater vehicles (AUVs) to navigate effectively and understand their surroundings. While deep neural networks offer promising solutions for depth estimation, their efficacy in challenging underwater environments-characterized by low light conditions and noise-is limited. To address this challenge, this paper proposes a method to enhance underwater image quality, thereby bolstering the accuracy of depth estimation. The approach involves preprocessing underwater images using color compensation and light balancing techniques, alongside contrast and sharpness enhancements. Subsequently, depth estimation is performed utilizing the Udepth model on the enhanced images. The efficacy and accuracy of the proposed method are evaluated and presented, demonstrating its potential to enhance depth image quality for underwater robotics applications.
High Dynamic Range (HDR) imaging aims to replicate the high visual quality and clarity of real-world scenes. Due to the high costs associated with HDR imaging, the literature offers various data-driven methods for HDR...
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ISBN:
(纸本)9798350349405;9798350349399
High Dynamic Range (HDR) imaging aims to replicate the high visual quality and clarity of real-world scenes. Due to the high costs associated with HDR imaging, the literature offers various data-driven methods for HDR image reconstruction from Low Dynamic Range (LDR) counterparts. A common limitation of these approaches is missing details in regions of the reconstructed HDR images, which are overor under-exposed in the input LDR images. To this end, we propose a simple and effective method, HistoHDR-Net, to recover the fine details (e.g., color, contrast, saturation, and brightness) of HDR images via a fusion-based approach utilizing histogram-equalized LDR images along with self-attention guidance. Our experiments demonstrate the efficacy of the proposed approach over the state-of-art methods.
Medical imageprocessing is undergoing a remarkable transformation with integration of Natural Language processing (NLP) and Artificial Intelligence (AI) in the healthcare industry. An advanced NLP model known as Chat...
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This paper introduces a complete approach for the recovery of polarimetric images from experimental intensity measurements. In many applications, such images collect, at each pixel, a Stokes vector encoding the polari...
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ISBN:
(纸本)9798350344868;9798350344851
This paper introduces a complete approach for the recovery of polarimetric images from experimental intensity measurements. In many applications, such images collect, at each pixel, a Stokes vector encoding the polarization state of light. By representing a Stokes vector image as a third-order tensor, we propose a new physically-constrained block-term tensor decomposition called Stokes-BTD. The proposed model is flexible and comes with broad identifiability guarantees. Moreover, physical constraints ensure meaningful interpretation of low-rank terms as Stokes vectors. In practice, Stokes images must be recovered from indirect, intensity measurements. To this aim, we implement two recovery algorithms for Stokes-BTD based on constrained alternated optimization and highlight constraints related to Stokes vectors. Numerical experiments on synthetic and real data illustrate the potential of the approach.
The demand for automated dimensional measurement technology is growing daily with global supply chain management challenges. Accurate dimensional measurement is critical to optimizing packaging design, reducing shippi...
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ISBN:
(纸本)9798350376975;9798350376968
The demand for automated dimensional measurement technology is growing daily with global supply chain management challenges. Accurate dimensional measurement is critical to optimizing packaging design, reducing shipping costs, improving warehouse efficiency, and enhancing the inventory management process. Traditional manual measurement methods are time-consuming and error-prone due to measurement and data collection errors. There are hidden concerns about the accuracy of the data, and they cannot meet the fast-paced, high-efficiency demands of modern logistics. To address this problem, this study introduces an automatic three-dimensional object size measurement system based on dual-view imaging technology. The experimental environment uses top-angle and side-angle lenses, combined with the imageprocessing technology of the OpenCV framework, to accurately measure the object's outermost three-dimensional dimensions. The imageprocessing algorithm used in the research can automatically identify the outline of an object and calculate its length, width, and height. The development of the system includes precise camera calibration, simultaneous image acquisition, and imageprocessing technology to ensure the accuracy and consistency of measurement results. The research demonstrates the experimental verification of accurately using images to calculate the contour feature information of objects. It conducts measurements based on various samples, proving that it can measure the outer dimensions of objects of various materials and shapes and has strong practicability and broad application prospects. The contribution of the research not only provides new solutions for dimensional measurement in the logistics field but also the experimental empirical model will expand the development of logistics warehouse automation systems with innovative and forward-looking data calculation and application.
In response to the escalating issue of obscured text in forensic analysis due to various factors such as illumination changes and low-resolution images, this paper introduces a novel convex penalty function within a t...
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ISBN:
(纸本)9798350351439;9798350351422
In response to the escalating issue of obscured text in forensic analysis due to various factors such as illumination changes and low-resolution images, this paper introduces a novel convex penalty function within a total variation regularization model for text image deblurring. The proposed model enhances sparsity and edge preservation, yielding superior deblurring results. Accompanying this, an efficient Alternating direction method of multiplier algorithm is proposed, showcasing rapid convergence for complex deblurring tasks. Extensive experimentation validates the model's efficacy across diverse image resolutions, demonstrating superior performance in both qualitative and quantitative assessments, particularly in edge preservation and sparsity achievement. Additionally, the model exhibits superior numerical convergence compared to existing techniques, establishing its reliability for text image deblurring applications.
With the increase in internet usage, blockchain technology has risen in popularity in recent years as one of the hottest technologies. It uses decentralized architecture with distributed database and provides cryptogr...
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