Pinnacle Systems miroVIDEO DV200, Руководство пользователя

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User´s Guide
39
5. Name and save the BMP file.
You can now enter a name and a location where you like to save your
BMP file.
De-interlacing
The DV200 software automatically de-interlaces the images you capture
from your DV tape. TV systems, such as NTSC and PAL use the interlacing
technique.
TV images are not scanned (drawn) line by line, but first all odd lines (1, 3, 5
etc.) are drawn and in a second step all even lines (2, 4, 6 etc.) are drawn.
The sections consisting of either odd or even lines are called fields.
When watching TV the human eye cannot distinguish the odd and the even
lines but merges them so that they appear as one. When capturing a DV
image, however, the resulting image would normally look distorted because
the odd and the even frames are put together.
The DV200 software, however, compensates for this with the feature called
de-interlacing by eliminating one field and generating a new enhanced image
from the remaining field.