What does progressive scan mean?
Quite simply, progressive scan means that the picture information is accumulated simultaneously and then output line-by-line or sequentially. The result is a non-interlace image with full vertical and horizontal resolution captured in a single rapid shutter event. Traditional interlace CCD cameras are only capable of capturing one field, or half the vertical information, per shutter event because the scan function breaks the integration period into two sequential field scans. In dynamic image capture, by the time the second field of information is stored and scanned the subject already has moved. The result is a ghosting or blurring effect once the two scan periods are combined to create the whole, interlaced picture. Interlaced images of even static objects can introduce some noticeable “jitter”. This is successfully eliminated with progressive scanning.
