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Animated Portable Network Graphics (APNG) is a file format which extends the Portable Network Graphics (PNG) specification to permit animated images that work similarly to animated GIF files, while supporting 24 or 48-bit images and full alpha transparency not available for GIFs. It also retains backward compatibility with non-animated PNG files.
Barrier-grid animation or picket-fence animation is an animation effect created by moving a striped transparent overlay across an interlaced image. The barrier-grid technique originated in the late 1890s, overlapping with the development of parallax stereography ( Relièphographie ) for 3D autostereograms .
With intense lighting, the eye can constrict the pupil, yet allow enough light to reach the retina. The more the eye resembles a pinhole camera, the less it depends on focusing through the lens. [d] In other words, the degree of decoupling between focusing and convergence needed to visualize an autostereogram is reduced. This places less strain ...
Pivot Animator (formerly Pivot Stickfigure Animator and usually shortened to Pivot) is a freeware application that allows users to create stick-figure and sprite animations, and save them in the animated GIF format for use on web pages and the AVI format (in Pivot Animator 3 and later).
However, most animations were not intended to give a realistic representation and the distortion isn't very obvious in cartoonish pictures. The distortion and the flicker caused by the rotating slits are not seen in most phénakisticope animations now found online (for instance the GIF animation on this page).
Today's NYT Connections puzzle for Wednesday, January 8, 2025The New York Times
Blue Pure 311i Max is the top-of-the-line model out of the half-dozen or so Blue Air purifiers available. The tallest (14.4" wide x 14.4" deep x 22.7" tall) in our round-up and with a premium grey ...
PNG was developed as an improved, non-patented replacement for Graphics Interchange Format (GIF)—unofficially, the initials PNG stood for the recursive acronym "PNG's not GIF". [ 6 ] PNG supports palette-based images (with palettes of 24-bit RGB or 32-bit RGBA colors), grayscale images (with or without an alpha channel for transparency), and ...