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how does upscaling work?

Discussion in 'Blu-ray & DVD Players' started by seka1980, Jul 15, 2005.

  1. seka1980

    seka1980 Member

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    cant get my head round this upscaling thing
    dont see the point in trying to put lines in a dvd image that shouldnt be there!
    and how many lines of res does a standard dvd have
  2. nealgs

    nealgs Guest

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    It's called interpolation and there are a number of different ways of doing it - check out any art program (Paintshop pro, Photoshop etc) and resize an image, the program normally has a different numbers of ways to do a resize operation something like bi-linear resample or bicubic resample for example.

    These use the pixel color info around or in a line from one pixel to decide the color of the new pixel data and build up the complete picture from it.

    Standard DVD are either 576(?) or 480 for PAL and NTSC respectively IIRC

    there, that's confused you even more :)

    Gary

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