A modulation method that can improve the performance of LED multi-spectral imaging

Article Engineering, Electrical & Electronic

A high-efficiency acquisition method of LED multispectral images using Gray code based square wave frequency division modulation

Yuhui Yang et al.

Summary: This paper proposes a multispectral image acquisition method combining Gray code and square wave frequency modulation, which can improve the quality of the images.

DIGITAL SIGNAL PROCESSING (2022)

添加到收藏夹

Article Optics

CAOS spectra imager design and advanced high dynamic range FDMA-TDMA CAOS mode

Mohsin A. Mazhar et al.

Summary: A CAOS line camera is introduced for spectral imaging of one-dimensional or line targets, using a diffraction grating and cylindrical lens optics system for line imaging and spectral analysis. The camera demonstrates line style spectral imaging with white light target illumination, visible band color filters, and mechanical pinhole to simulate unique spectral content of individual pixels in a one-dimensional line target. The FDMA-TDMA mode of the CAOS camera shows high dynamic range target recovery with improved speed and signal-to-noise ratio compared to FM-TDMA mode.

APPLIED OPTICS (2021)

添加到收藏夹

Article Optics

A high-efficiency acquisition method of LED-multispectral images based on frequency-division modulation and RGB camera

He Li et al.

Summary: LED illumination based multispectral imaging (LEDMSI) is a promising technique for fast and effective spectral image acquisition. It combines frequency-division modulation with RGB camera to achieve high-efficiency acquisition of high-quality multispectral images.

OPTICS COMMUNICATIONS (2021)

添加到收藏夹

Article Optics

Triple coding empowered FDMA-CDMA mode high-security CAOS camera

Nabeel A. Riza et al.

Summary: This study demonstrates the hybrid triple coding empowered FDMA-CDMA mode of the coded access optical sensor camera, which provides high-security space-time-frequency triple signal encoding design for robust, faster, linear irradiance extraction at a moderately high dynamic range. Experimental results show the advantages of the FDMA-CDMA mode in spectrum analysis and image recovery, showcasing its potential applications in various fields such as food inspection and security systems.

APPLIED OPTICS (2021)

添加到收藏夹

Article Optics