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Interlaced video facts for kids

Kids Encyclopedia Facts

Interlaced video is a method to display an image progressively. Images are drawn line by line, and interlacing means that the odd lines are drawn first, and the even lines are "filled in" later. This effectively doubles the resolution of the image. The two parts of the image are called fields, and are transmitted one after the other.

Telefunken invented the method in the 1920s. Today it is widely used for displaying images and video.

Example

  • Entrelacement exemple 0

    First the odd-numbered lines are drawn,

  • Entrelacement exemple 1

    one by one

  • Entrelacement exemple 2

    the even lines

  • Entrelacement exemple 3

    are drawn

  • Interlace zoom

    Image composition as animation

  • Entrelacement modele

    The resulting image

Related pages

Images for kids

  • CRT image creation animation

    Animation of an interlaced TV.

  • Deinterlaced vs interlaced image

    A screenshot from HandBrake, demonstrating the difference between deinterlaced and interlaced images.

  • Interlaced video frame (car wheel)

    When someone watches interlaced video on a progressive monitor with poor (or no) deinterlacing, they can see "combing" in movement between two fields of one frame.

  • Interlaced video frame (car wheel)Xcorr

    Picture of a moving car tire, interlace combing reduced by realigning the even and odd field on the X axis. The other field has been moved 16 pixels right, reducing the combing on the bumper and the tire outline, but the hub cap that has turned between the fields has notable combing.

See also

Kids robot.svg In Spanish: Exploración entrelazada para niños

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