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In Sindh, some Muslim Sindhi women apply a black dot or line by "Kajjal or Surmo " on the forehead and chin, and sometimes three dots or lines around eyes as part of historic Indian traditions that have continued post-Partition. As an amulet believed to protect against evil-eye, these dots are called Tikro or Tilk (singular), or Tikra (plural).
The second is constructed by superimposing white discs on the intersections of orthogonal gray bars on a black background. Dark dots seem to appear and disappear rapidly at random intersections, hence the label "scintillating". When a person keeps their eyes directly on a single intersection, the dark dot does not appear.
Detail from Seurat's Parade de cirque, 1889, showing the contrasting dots of paint which define Pointillism. Pointillism (/ ˈ p w æ̃ t ɪ l ɪ z əm /, also US: / ˈ p w ɑː n-ˌ ˈ p ɔɪ n-/) [1] is a technique of painting in which small, distinct dots of color are applied in patterns to form an image.
When displayed on a black-and-white monitor, the luminance signal produces a normal black-and-white image, while the chrominance signal manifests as a fine pattern of dots of varying size and intensity overlaid over the black-and-white picture. A related phenomenon is dot crawl, which can produce visual artifacts in colour pictures.
Elliptical dots: appropriate for images with many objects. Elliptical dots meet at the tonal values 40% (pointed ends) and 60% (long side), so there is a risk of a pattern. Square dots: best for detailed images, not recommended for skin tones. The corners meet at a tonal value of 50%. The transition between the square dots can sometimes be ...
An example of the scintillating grid illusion. Dark dots seem to appear and disappear at intersections. The scintillating grid illusion is an optical illusion, discovered by E. and B. Lingelbach and M. Schrauf in 1994. [2] It is often considered a variation of the Hermann grid illusion but possesses different properties. [2] [3]
Shocking video shows the US military fighter jet that crashed in San Diego Harbor Wednesday smack into the water and explode moments after both pilots ejected to safety.. The two-seat EA-18G ...
A random-dot stereogram (RDS) is stereo pair of images of random dots that, when viewed with the aid of a stereoscope, or with the eyes focused on a point in front of or behind the images, produces a sensation of depth due to stereopsis, with objects appearing to be in front of or behind the display level.