Results 31 to 40 of about 13,144 (256)
Fire, 2023 The temperature field and chemiluminescence measurements of axisymmetric flame are obtained simultaneously in only one image. Digital Laser Speckle Displacement measures temperature fields, and direct image flame determines chemiluminescence values ...
J. C. I. Zamarripa-Ramírez +2 more
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Rayleigh-maximum-likelihood bilateral filter for ultrasound image enhancement
BioMedical Engineering OnLine, 2017 Background Ultrasound imaging plays an important role in computer diagnosis since it is non-invasive and cost-effective. However, ultrasound images are inevitably contaminated by noise and speckle during acquisition. Noise and speckle directly impact the
Haiyan Li +5 more
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Speckle Suppression Using Cylindrical Self-Diffraction for Cylindrical Phase-Only Hologram
IEEE Photonics Journal, 2021 In the reconstruction of cylindrical phase-only hologram (POH), speckle noise caused by the addition of random phase is rarely discussed. Although some speckle noise suppression algorithms have been proposed for planar POH, it does not work well if they ...
Feng-Ming Jin +5 more
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Robustness Research of Center Coordinate Value for Speckle Contour and Denoising Algorithm Implementation [PDF]
Zhengzhou Daxue xuebao. Gongxue ban, 2021 The combination of monocular vision and laser spot could measure the depth information.The laser spot was irradiated on the surface of the object to be measured,after imaging by CCD camera,it would be generally elliptical spot,the accuracy of the ...
Zhu Xinglong +3 more
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Deep Learning-Based Ultrasound Image Despeckling by Noise Model Estimation [PDF]
Iranian Journal of Electrical and Electronic Engineering, 2023 Speckle noise is an inherent artifact appearing in medical images that significantly lowers the quality and accuracy of diagnosis and treatment.
O. Mahmoudi Mehr +2 more
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COMPARISON OF FILTERS DEDICATED TO SPECKLE SUPPRESSION IN SAR IMAGES [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016 This paper presents the results of research on the effectiveness of different filtering methods dedicated to speckle suppression in SAR images. The tests were performed on RadarSat-2 images and on an artificial image treated with simulated speckle noise.
P. Kupidura
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Image Noise Removal in Ultrasound Breast Images Based on Hybrid Deep Learning Technique
Sensors, 2023 Rapid improvements in ultrasound imaging technology have made it much more useful for screening and diagnosing breast problems. Local-speckle-noise destruction in ultrasound breast images may impair image quality and impact observation and diagnosis.
Baiju Babu Vimala +6 more
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Analysis of Edge Detection in Bar Code Symbols: An Overview and Open Problems
Journal of Applied Mathematics, 2012 Accurate edge localization is essential in bar code decoding. Since speckle noise is the most dominant form of noise in laser bar code scanners, it is important to fully understand its effects on edge detection.
Saša Krešić-Jurić
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Noise analysis in outdoor dynamic speckle measurement
Applied Optics, 2023 The dynamic speckle method (DSM) is an effective tool for the estimation of speed of processes. The speed distribution is encoded in a map built by statistical pointwise processing of time-correlated speckle patterns. For industrial inspection, the outdoor noisy measurement is required.
Mikhail Levchenko +6 more
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Speckle Reduction of Reconstructions of Digital Holograms Using Gamma-Correction and Filtering
IEEE Access, 2018 Speckle noise is inevitable in the process of acquiring of digital holograms. In this paper, a new approach is proposed to suppress the speckle noise in the digital hologram.
Xiaohui Huang +4 more
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