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Old 26th July 2004, 12:12   #4  |  Link
kassandro
Registered User
 
Join Date: May 2003
Location: Germany
Posts: 502
Quote:
This filter takes a bobbed video stream and halves it's framerate by blending
every other frame with the adjacent frame that matches it best.
Sorry, but you simply can't call this field matching. On the other hand, BlendBob is a good name, because you blend with the best neighbour. Nevertheless motion is blurred. A field matcher, like trbarry's Uncomb or Donald Graft's Telecide (without postprocessing) never touches the fields, they only may move to an adjacent frame. While your Blendbob certainly produces better output, if the above field matchers cannot find a good match, the output is clearly inferior, if they can, but the same effect can be obtained if you simply deinterlace. Essentially you are converting a sharp deinterlacer (the bob input) into a blur deinterlacer. Your Blendbob is more a deinterlacer with good compression ratio rather than a field matcher.
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