H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/53
H04N 9/75 (2006.01)
Patent
CA 1130447
ABSTRACT OF THE DISCLOSURE In a chroma-kev tracking system for compressing and inserting a second television picture into an area corresponding to a chroma-key frame located at a specified position in a first television picture, there is described a tracking system which compresses the second picture to have an aspect ratio correspond- ing to that of the chroma-key frame into which it is to be in- serted. In known systems, the aspect ratio of the inserted picture is not varied to that of the chroma-key frame with the result of awkward-looking pictures from some camera angles. In this invention, a key signal is produced representing the key frame and which is used for producing a position signal represent- ing the position of a circumscribed key frame. From the position signal there is produced an imaginary frame position signal representing an imaginary-frame with the same aspect ratio as the first and second pictures. A compressed second video signal representing the compressed second picture is produced from the second video signal and imaginary-frame position signal to be identical in size with the imaginary frame. The first video signal and compressed second video signal are selectively gated in response to the key signal such that the compressed second picture is inserted into the chroma-key frame of the first pic- ture.
309421
Inaba Masao
Kashigi Kazuo
Nippon Electric Co. Ltd.
Smart & Biggar
LandOfFree
Digital video effects system employing a chroma-key tracking... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Digital video effects system employing a chroma-key tracking..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital video effects system employing a chroma-key tracking... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-43945