Results 11 to 20 of about 1,447,541 (185)
Renal stone detection using a low kilo‐voltage paediatric CT protocol – a porcine phantom study
Journal of Medical Radiation Sciences, 2021 Introduction Reducing tube voltage is an effective dose saving method in computed tomography (CT) assuming tube current is not concurrently increased.
Bo Mussmann +7 more
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Frontiers in Neuroscience, 2021 Cerebrovascular segmentation is important in various clinical applications, such as surgical planning and computer-aided diagnosis. In order to achieve high segmentation performance, three challenging problems should be taken into consideration: (1 ...
Bin Guo +3 more
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Noise Variance Estimation Using Image Noise Cross‐Correlation Model on SEM Images [PDF]
Scanning, 2012 SummaryA number of techniques have been proposed during the last three decades for noise variance and signal‐to‐noise ratio (SNR) estimation in digital images. While some methods have shown reliability and accuracy in SNR and noise variance estimations, other methods are dependent on the nature of the images and perform well on a limited number of ...
Sim, K. S., Nia, M. E., Tso, Chih Ping.
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Image Quality Assessment and Noise Reduction on Distinct Noise Images
International Journal of Scientific Research in Science and Technology, 2023 Image quality assessment is a procedure of evaluating the quality of an image and in the past few years, the desire of image-based applications has grown hugely; therefore the significance of methodical and accurate assessment of the quality of the image is necessary.
Johnson Durai A. R +2 more
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Imaging through noise with quantum illumination [PDF]
Science Advances, 2020 Full-field imaging using quantum illumination distinguishes the true image from a structured thermal background.
T. Gregory +3 more
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A Study on Distortion Estimation Based on Image Gradients
Sensors, 2022 Image noise is a variation of uneven pixel values that occurs randomly. A good estimation of image noise parameters is crucial in image noise modeling, image denoising, and image quality assessment.
Sin Chee Chin +3 more
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Noise Removal in the Developing Process of Digital Negatives
Sensors, 2020 Most modern color digital cameras are equipped with a single image sensor with a color filter array (CFA). One of the most important stages of preprocessing is noise reduction.
Marek Szczepański, Filip Giemza
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Custom transistor layout design techniques for random telegraph signal noise reduction in CMOS image sensors [PDF]
, 2010 Interface and near oxide traps in small gate area MOS transistors (gate area ,1 mm2) lead to RTS noise which implies the emergence of noisy pixels in CMOS image sensors.
Havard, E. +2 more
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Noise-weighted Angular Differential Imaging [PDF]
Research Notes of the AAS, 2017 Angular differential imaging (ADI) (Marois et al. 2006) is an observational technique in high contrast imaging where the telescope is used in pupil tracking mode so that the image of the sky rotates with respect to the optical surfaces. Bright "speckle" light caused by optical errors remains fixed in the image, while planets and disks rotate with the ...
Michael Bottom +2 more
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Measurement Science Review, 2020 In digital volume correlation (DVC), random image noise in volumetric images leads to increased systematic error and random error in the displacements measured by subvoxel registration algorithms. Previous studies in DIC have shown that adopting low-pass
Zou Xiang, Li Kai, Pan Bing
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