Six Band HDTV Camera System for Spectrum-Based Color Reproduction

Ohsawa, Kenro; Ajito, Takeyuki; Komiya, Yasuhiro; Fukuda, Hiroyuki; Haneishi, Hideaki; Yamaguchi, Masahiro; Ohyama, Nagaaki

doi:10.2352/j.imagingsci.technol.2004.48.2.art00003

Cited by 48 publications

(1 citation statement)

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“…A series of multichannel imaging systems utilizing image sensors have been invented to meet the demands for the capture of multi-spectral images (MSIs). These systems can be classified into the following three categories: (i) single-camera multi-shot systems [6], (ii) multi-camera one-shot systems [7], and (iii) single-camera one-shot systems [8][9][10][11][12][13]. Single-camera multishot systems rely on precisely controlled environments and complex equipment, while multi-camera single-shot systems require optical system calibration [14].…”

Section: Introduction 1backgroundmentioning

confidence: 99%

A Snapshot Multi-Spectral Demosaicing Method for Multi-Spectral Filter Array Images Based on Channel Attention Network

Zhang,

Dai,

Zhang

et al. 2024

Sensors

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Multi-spectral imaging technologies have made great progress in the past few decades. The development of snapshot cameras equipped with a specific multi-spectral filter array (MSFA) allow dynamic scenes to be captured on a miniaturized platform across multiple spectral bands, opening up extensive applications in quantitative and visualized analysis. However, a snapshot camera based on MSFA captures a single band per pixel; thus, the other spectral band components of pixels are all missed. The raw images, which are captured by snapshot multi-spectral imaging systems, require a reconstruction procedure called demosaicing to estimate a fully defined multi-spectral image (MSI). With increasing spectral bands, the challenge of demosaicing becomes more difficult. Furthermore, the existing demosaicing methods will produce adverse artifacts and aliasing because of the adverse effects of spatial interpolation and the inadequacy of the number of layers in the network structure. In this paper, a novel multi-spectral demosaicing method based on a deep convolution neural network (CNN) is proposed for the reconstruction of full-resolution multi-spectral images from raw MSFA-based spectral mosaic images. The CNN is integrated with the channel attention mechanism to protect important channel features. We verify the merits of the proposed method using 5 × 5 raw mosaic images on synthetic as well as real-world data. The experimental results show that the proposed method outperforms the existing demosaicing methods in terms of spatial details and spectral fidelity.

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Section: Introduction 1backgroundmentioning

confidence: 99%

A Snapshot Multi-Spectral Demosaicing Method for Multi-Spectral Filter Array Images Based on Channel Attention Network

Zhang,

Dai,

Zhang

et al. 2024

Sensors

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Image acquisition technique for high dynamic range scenes using a multiband camera

Haneishi¹,

Miyahara²,

Yoshida³

2006

Color Research & Application

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Hybrid-Resolution Spectral Imaging System Using Adaptive Regression-Based Reconstruction

Nakazaki

Murakami

Yamaguchi

2014

Lecture Notes in Computer Science

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Hybrid-resolution spectral imaging is a technique that efficiently produces high-resolution spectral images by combining low-resolution spectral data with a high-resolution RGB image. In this paper, we introduce a regression-based spectral reconstruction method for this system to enable us doing accurate spectral estimation without a laborious measurement of the spectral sensitivity of the RGB camera. We present two methods for regression-based spectral reconstruction that utilize spatially-registered pair of a low-resolution spectral image and a high-resolution RGB image: whole frame data regression and locally weighted regression. In the experiment, we developed a hybridresolution spectral imaging system, and it was confirmed that the regressionbased methods can estimate spectra in high accuracy.

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Six Band HDTV Camera System for Spectrum-Based Color Reproduction

Cited by 48 publications

References 0 publications

A Snapshot Multi-Spectral Demosaicing Method for Multi-Spectral Filter Array Images Based on Channel Attention Network

A Snapshot Multi-Spectral Demosaicing Method for Multi-Spectral Filter Array Images Based on Channel Attention Network

Image acquisition technique for high dynamic range scenes using a multiband camera

Hybrid-Resolution Spectral Imaging System Using Adaptive Regression-Based Reconstruction

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