@RU.08 - The yellowing near the lines look to me like rainbow artifacts.
The source is laserdisc, so you are talking NTSC hard interlaced, which makes it a real possibility.
There are some pretty good de-rainbow filters out there. I think the last one I used was ChubbyRain2, but Bifrost is well liked.
http://avisynth.nl/index.php/External_filters#Rainbow_.26_Dot_Crawl_Removal
I do recall that derainbowing must be performed before deinterlacing though.