The phrase "a contrast of backgrounds" is correct and usable in written English.
It can be used when discussing differences in personal histories, cultures, or experiences between individuals or groups.
Example: "The film explores a contrast of backgrounds, highlighting the diverse experiences of its characters."
Alternatives: "a difference in backgrounds" or "a disparity of backgrounds".
For lesions with a contrast to background ratio of at least 2 1, the smallest lesion that one can detect will be 1.5 cm in diameter.
Raman yield was reconstructed with a contrast to background ratio of 8.1 and 9.8 for the 5mm and 12.5mm sized Teflon inclusions, respectively.
Fig. 25 Target tracking results under low contrast of background (images are from left to right).
Traditionally, the well-known geometrical structures are used as useful geometrical descriptors, but, an adequate characterization and recognition are deeply affected by scenarios (which include occlusions, low contrast of background and foreground, unsharpened borders, etc).
This phenomenon shows that brightness is not the monotonous function of visual sensitivity, that is, visual sensitivity is not only influenced by brightness but also by contrast of background.
In particular Mr. Dendy can handle an ensemble of 16 or more (there were 24 dancers in all) in developing patterns, with contrasts of background and foreground, latitude and longitude, left and right, that were on several occasions mesmerizing.
Sample images for each individual sensor and fused set are shown in Table 4. Final specifications: Following all processes, stimulus sets of both fused and individual sensor images were adjusted to represent pixels in values of contrast relative to a background of average luminance using a contrast definition of (L pixel −L background )/(L background ).
Moreover, for all these plumage patches contrast fell within the range of contrast found among background elements suggesting that contrast between plumage and backgrounds could be hidden within the contrast of the background itself (also see [ 80]).
Various parameters may apparently influence the human computer interaction (HCI) environment, working postures, distance from the VDU, level of illumination in the workplace, color contrast of the background and the projected matter, environmental variables like, noise pollution, temperature, humidity etc.
limits for the contrast of the background corresponded to 20% of the mean values for absorption and scattering which is more realistic choice when considering absorption and scattering variations typical in DOT.
