SNR analysis and Hadamard mask modification of DMD Hadamard Transform Near-Infrared spectrometer
Sign Up to like & getrecommendations! Published in 2017 at "Optics Communications"
DOI: 10.1016/j.optcom.2016.07.086
Abstract: Abstract The noise of Hadamard Transform (HT) Near Infrared (NIR) spectrometer includes not only the detector circuit noise but also the illumination noise. Hadamard Transform reduces the detector noise while increases the illumination noise. If… read more here.
Keywords: hadamard transform; method; hadamard mask; spectrometer ... See more keywords
Resolution-enhanced single-pixel imaging using the Hadamard transform matrix
Sign Up to like & getrecommendations! Published in 2023 at "Chinese Physics B"
DOI: 10.1088/1674-1056/accf7d
Abstract: In this paper, we propose a single-pixel imaging (SPI) method to achieve a higher-resolution image via the Hadamard transform matrix. Unlike traditional SPI schemes, this new method recovers images by correlating single-pixel signals with synchronized… read more here.
Keywords: pixel imaging; hadamard transform; transform; transform matrix ... See more keywords
Efficient Encrypted Images Filtering and Transform Coding With Walsh-Hadamard Transform and Parallelization
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Transactions on Image Processing"
DOI: 10.1109/tip.2018.2802199
Abstract: Since homomorphic encryption operations have high computational complexity, image applications based on homomorphic encryption are often time consuming, which makes them impractical. In this paper, we study efficient encrypted image applications with the encrypted domain… read more here.
Keywords: hadamard transform; image; efficient encrypted; walsh hadamard ... See more keywords
A Robust image watermarking for copyright protection using Multiresolution Walsh-Hadamard transform and Schur using Differential evolution
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DOI: 10.12688/f1000research.124720.1
Abstract: \textit{Background} The proposed watermarking framework is based on the multi-resolution Walsh-Hadamard Transform (MR-WHT) along with Schur factorization. For embedding, the cover image is converted into a frequency domain using MR-WHT before Schur factorization is applied.… read more here.
Keywords: hadamard transform; walsh hadamard; differential evolution; image ... See more keywords
The Improvement on the Performance of DMD Hadamard Transform Near-Infrared Spectrometer by Double Filter Strategy and a New Hadamard Mask
Sign Up to like & getrecommendations! Published in 2019 at "Micromachines"
DOI: 10.3390/mi10020149
Abstract: In the Hadamard transform (HT) near-infrared (NIR) spectrometer, there are defects that can create a nonuniform distribution of spectral energy, significantly influencing the absorbance of the whole spectrum, generating stray light, and making the signal-to-noise… read more here.
Keywords: hadamard transform; near infrared; hadamard; hadamard mask ... See more keywords