2.an inclined surface; grade; ramp. 3. a.the rate of change with respect to distance of a variable quantity, as temperature or pressure, in the direction of maximum change. b.a curve representing such a rate of change. 4.a differential operator that, operating upon a function of several...
A gradient operator in computer science refers to a weighted convolution operator used to compute the gradient of an image. It is similar to an averaging operator but includes negative integers to increase contrast among adjacent pixels. Gradients can be computed in eight directions, and the sum ...
A geothermal gradient for continental crust that accounts for changes at depth is shown in Figure 20.7. Mountain-building processes have the effect of increasing the geothermal gradient, which results in the metamorphism of crustal rocks. Sign in to download full-size image FIGURE 20.7. The five ...
The generalization of the AdaBoosting BP neural network results in an effective and robust quality prediction model. The new model, called Oriented Gradients Image Quality Assessment (OG-IQA), is shown to deliver highly competitive image quality prediction performance as compared with the most popular...
Full size image Corroborating our hypothesis that gradual TGF-β signaling modulation during NI is important in ENO formation, the no SB43 protocol also resulted in the formation of organoids that were phenotypically identical to the ENOs (Fig. 2b), and with high efficiency, an observation that...
Digital image/ speckle correlation (DISC) uses digital image processing to resolve displacement and deformation gradient fields. The practical implementation of DISC involves important challenges such as computation complexity and the discrepancy of the sensitivities and accuracies claimed in previous studies...
An alternative is to create an image in Photoshop. Draw the gradient and apply a blur until you don't see banding anymore. Save, place the image in ID. The banding disappears because blurring hides the continuous lines of a same colour, which is what your eyes perceive as discrete l...
ObjectivesTo project the likely worldwide increase in the prevalence of erectile dysfunction (ED) over the next 25 years, and to identify and discuss some ... Aytaç,Mckinlay,Krane - 《Bju International》 被引量: 1055发表: 1999年 Brachial-ankle pulse wave velocity: an index of central arte...
For a probability level τ∈(0,1), an important quantity is the conditional quantile Qx(τ)=FY−1(τ∣X=x), (1) where FY−1(⋅∣X=x) is the generalized inverse of the conditional distribution function of Y given X=x. There has been extensive research in statistics and machine...
It is often used for the optimization of image registration problems [253]. Powell's method is inherently limited in its degrees of freedom; to mitigate this limitation, alternative gradient-free methods have been developed, e.g., the Nelder-Mead method. The gradient-based and gradient-free ...