Contrast enhancement
Blind Contrast Enhancement Assessment by Gradient Ratioing at Visible Edges
... The contrast of outdoor images acquired under adverse weather conditions, especially foggy weather, is altered by the scattering of daylight by atmospheric ...the contrast of these ...after contrast ...
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Contrast enhancement of Micro Dose X-ray images
... EOS imaging, Paris, France - mdelplanque@eos-imaging.com ABSTRACT A multi-scale (MS) decomposition method for contrast enhancement of Micro Dose (MD) X-ray images is presented in this paper. First, we get a ...
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A flexible patch based approach for combined denoising and contrast enhancement of digital X-ray images
... multiscale contrast enhancement framework, allow optimizing the trade- off between improvement of the visibility of anatomical structures and noise ...
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Color Correction and Contrast Enhancement for Natural Images and Videos
... of contrast improvement and saturation ...video contrast enhancement method. Video enhancement is a very challenging work, which is a much more difficult task than image ...Video ...
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Contrast enhancement behavior of hydrogen silsesquioxane in a salty developer
... a contrast enhancement behavior of hydrogen silsesquioxane 共HSQ兲 in a salty development system ...of contrast curves and line-grating patterns were carried out to investigate the unique properties of ...
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T 1 mapping, AIF and Pharmacokinetic Parameter Extraction from Dynamic Contrast Enhancement MRI Data
... 1 Introduction Dynamic contrast enhancement (DCE) Magnetic resonance imaging (MRI) is a noninvasive method that provides vasculature information about the tissue. This method was shown to be sensitive and ...
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Contrast enhancement of propagation based X-ray phase contrast imaging
... These results are show that X-ray phase contrast tomography has significant potential in the medical imaging applications. In the future, X-ray phase CT may find many applications in diagnostic medicine. For ...
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MRI CONTRAST ENHANCEMENT OF MAGNETIZATION PREPARED STEADY STATE SEQUENCE: AN OPTIMAL CONTROL FRAMEWORK
... The optimization of the sequence remains a difficult numerical problem due to coupling between cycles. Mugler and al. [3] have developed a solution in the simple case of a single RF pulse preparation. However, ...
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Low dose x-ray image processing : Joint denoising and contrast enhancement, and automatic detection of anatomical landmarks for image quality estimation
... of enhancement should not be the same every- where (see Section ...the enhancement of high activity ...noise enhancement and the presence of halos, high ALVD means good details ...to contrast ...
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Global and Local Contrast Adaptive Enhancement for Non-Uniform Illumination Color Images
... masking-based enhancement algorithms [ 27 , 6 ] improve the contrasts for the high-frequency component and the low- frequency component ...the contrast improvement and naturalness ...retinex-based ...
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Internal noise sources limiting contrast sensitivity
... that contrast sensitivity reached saturation at the highest luminance intensities, even at high SFs (except for subject EM who did not reach saturation at high SFs), thereby enabling to estimate late noise across ...
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Background subtraction in high-contrast imaging
... Raw astronomical images Final residual image Image recentering • Center of mass • 2d Gaussian fit • DFT cross-correlation Bad frames removal • Image correlation • Pixel statist[r] ...
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Adaptive matched filters for contrast imaging
... Keywords — Matched filter, adaptive, contrast imaging, identification system. I. Introduction Conventional ultrasound contrast imaging systems use a fixed transmit frequency. However it is known that the ...
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Analysis of regional wall motion during contrast-enhanced dobutamine stress echocardiography: effect of contrast imaging settings.
... myocardial contrast perfusion echocardiography for detecting abnormal wall motion Myocardial perfusion imaging is a different approach to get insight into the effect of CAD on the LV myocardium (induce perfusion ...
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Artefact-free color and contrast modification
... Before proceeding, we now recall some of the approaches that have been proposed in the literature to suppress artefacts due to contrast or color modification. The simplest one is proposed in [ 18 ] in the context ...
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Visual performance, visibility and apparent contrast
... Visual performance, visibility and apparent contrast Levy, A. W. https://publications-cnrc.canada.ca/fra/droits L’accès à ce site Web et l’utilisation de son contenu sont assujettis aux conditions présentées dans ...
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Adaptive matched filters for contrast imaging
... medium (microbubbles) is time-varying and therefore an adapted time-varying excitation is expected. We suggest an adaptive imaging technique which selects the optimal transmit frequency that maximizes the contrast ...
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High-contrast OLEDs with high-efficiency
... Fig. 3. (a) Schematic representation of a bottom-emitting OLED, (b) Example of reflectance and emission of a conventional OLED (thin line), and one with R cathode =0 (thick line). (R L is the luminous reflectance, given ...
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Contrast Invariant SNR and Isotonic Regressions
... Ω, u(x) ≥ λ} and lower level-sets χ λ − = {x ∈ Ω, u(x) < λ}. The level-sets are geometrical features invariant to global contrast changes. In order to obtain a representation invariant to local contrast ...
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Conducting polymer actuator enhancement through microstructuring
... After fiddling around with different projects, I finally came across this breath figure technique which turned out to be a natural way to study the influence of microst[r] ...
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