Matching home screens11/13/2023 ![]() Reprinted with permission from Helson (1963). Low spatial frequencies induce contrast, while high spatial frequences induce assimilation. ![]() Induction type depends on spatial frequency. Regarding visual induction models, we single out the work of Otazu, Parraga, and Vanrell (2010), which is based on wavelet decompositions, and the very recent work of Song, Faugeras, and Veltz (2019), that uses a neural field model. Although not all confirm these early observations, there exists a large body of later work (e.g., Brenner, Ruiz, Herraiz, Cornelissen, & Smeets, 2003 Brown & MacLeod, 1997 Harrar & Vienot, 2005 Monnier & Shevell, 2003 Shevell & Wei, 1998 Shevell & Monnier, 2005 Wesner & Shevell, 1992) corroborating the importance of the spatial distribution and variability of inducing surrounds. Their conclusion was that, for higher spatial frequencies visual induction takes the form of assimilation, whereas for lower spatial frequencies it takes the form of contrast. A similar result for the chromatic case was reported by Fach and Sharpe (1986), who modulated the spatial frequency of patterns as opposed to the target background proportionality variation of Helson. When the bars were very thin, the observers reported assimilation as the bars increased in width, the assimilation effect became less pronounced, and after some point the observers started to report contrast, whose effect became increasingly more pronounced as the width of the bars increased ( Figure 2). Specifically, observers had to judge the appearance of grey bars over white or black backgrounds. The groundbreaking experiments of Helson in 1963 ( Helson, 1963) aimed to quantify the perceptual phenomena first formally described by von Bezold (1874) and Gelb (1930), using matching experiments with printed induction bar patterns and isolated Munsell patches. ![]() Right: chromatic induction the central and inducing rings on both sides have the same RGB tristimulus values, but all rings are perceived differently due to their rearrangement. Middle: lightness assimilation all gray bars have the same luminance value but the gray bars surrounded by black are perceived as being darker than the ones surrounded by white, which are seen as being lighter. Left: lightness contrast the center gray squares have the same luminance value but the one surrounded by white is perceived darker and the one surrounded by black is perceived lighter. The potential of the method is demonstrated through psychophysical experiments on synthetic images and qualitative examples on natural images. From this finding, we propose a method to preprocess an image in a screen–size dependent way so that its perception, in terms of visual induction, may remain constant across displays of different size. In this work, we show that a neural field model based on the efficient representation principle is able to predict induction effects and how, by regularizing its associated energy functional, the model is still able to represent induction but is now invertible. This phenomenon presents a practical challenge for the preservation of the artistic intentions of filmmakers, because it can lead to shifts in image appearance between viewing destinations. But visual induction, the perceptual phenomenon by which the appearance of a scene region is affected by its surroundings, will be different for the same image shown on two displays of different dimensions. (The screen resolution will automatically revert if you take no action.In the film industry, the same movie is expected to be watched on displays of vastly different sizes, from cinema screens to mobile phones. Once the resolution changes, you will be asked if you would like to “Keep these display settings?” Select Revert. In the Display resolution row, select the dropdown and choose any screen resolution that differs from the display’s current resolution. Select Start > Settings > System > Display, and look at the section that shows your displays. You can resolve this issue by temporarily changing the screen resolution of the external display. When the screen resolution of the built-in display is larger than the external, then the wallpaper on the external display might appear to be too big and will be cut off on the right and bottom sides. When the screen resolution of the built-in display is smaller than the external, then the wallpaper on the external display might appear to be too small and doesn't fill the whole screen. This problem might occur on Windows 10 or Windows 11 if the screen resolution of the built-in display differs from the screen resolution of the external display. ![]() On a Windows 10 or Windows 11 device with a built-in display, when you connect an external monitor with a USB-C, DisplayPort, or HDMI connection, the wallpaper on the external monitor might not correctly fill the screen.
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