rana wrote:
Recently, when I started taking interest in Interlaced vs Progressive vs Pseudo-prog, I wanted to find out the difference in the two transfers.
Here is what I found:
Cheap transfer was OK and every 6th field was a repeated field as normal for a PAL to NTSC transfer. PQ was OK.
The expensive transfer had no repeated fields. 50 distinct fields had been successfully changed into 60 distinct fields. Surprise was that they were all sharp, no blurring or multi-images. They successfully created extra images that were also sharp. I don't know what kind of calculations/ interpolation algorithm will make more, distinct and sharp, pictures than the source, but it was done. Of course, the resulting PQ was excellent. This is a good example of field averaging.
There are no methods to create 60 fields out of 50/48
without adding motion artifacts unless it's something like
an inversible pulldown. As soon as you mix old fields or
create new ones from interpolation there are motion
artifacts. Real life pictures are too complex to do perfect
motion estmation which is required for artifact free
interpolations.
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