3D Televisions

A 3D television television employs techniques 3D presentation, stereoscopic capture, multi- capture, 2D p depth, 3D display—a special viewing device project television program realistic three-dimensional field.

There several techniques produce display 3D moving pictures.

Common 3D display technology projecting stereoscopic image pairs viewer include:

Anaglyphic 3D ( passive -y lenses)

Polarization 3D ( passive polarized lenses)

Alternate-frame sequencing ( active shutter lenses)

Autostereoscopic displays (without lenses), sometimes referred commercially A 3D.

Single- displays project y stereo p . Multi- displays either tracking change depending viewing angle, simultaneously project multiple independent views scene multiple viewers (automultiscopic); multiple views created y using 2D p depth format.

Various other display techniques described, holography, volumetric display Pulfrich effect, y Doctor W Dimensions T 1993, y 3 R F T O A Oy S 1997, y Discovery Channel's Shark W 2000, among others. R-T 3D TV (Youtube video) essentially autostereoscopic display.

Stereoscopy widely accepted method capturing delivering 3D video. I involves capturing stereo pairs - setup, cameras mounted y side, separated y distance between person's pupils. I imagine projecting object point scene along --sight ( every y, ) background screen, y describe location point mathematically using simple algebra. I rectangular coordinates screen lying Y-Z plane ( Z x upward Y x right) viewer centered along X axis, screen coordinates simply terms, accounting perspective other binocular shift. Perspective modifies Z Y coordinates object point y factor D/(D-x), while binocular shift contributes additional ( Y coordinate y) *x/(2*(D-x)), where D distance selected system origin viewer (right between y), y separation (about 7 centimeters), x x coordinate object point. T O A Oy binocular shift positive -y- negative right-y-. F y distant object points, obvious y looking along sight. F y objects, y y become excessively "cross-eyed". However, scenes greater portion field view, realistic image readily achieved y superposition right images (using polarization method synchronized shutter- method) provided viewer isn't screen right images correctly positioned screen. Digital technology largely eliminated inaccurate superposition common problem during traditional stereoscopic films.

Multi- capture arrays y cameras capture 3D scene through multiple independent video streams. Plenoptic cameras, which pure light field scene, capture multiple views single . Depending camera setup, resulting views either displayed multi- displays, passed further image processing.

After capture, stereo multi- image processed extract 2D p depth information every view, effectively creating device-independent representation original 3D scene. T inter- image compression generate stereoscopic pairs multiple different angles screen sizes.

2D p depth processing recreate 3D scenes single convert legacy video material 3D look, though convincing effect harder achieve resulting image likely cardboard miniature.