H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/33
H04N 7/12 (2006.01) H04N 7/26 (2006.01) H04N 7/30 (2006.01)
Patent
CA 1227867
ABSTRACT IMAGE PROCESSING A method of transmission or storage of a television picture involves dividing it into a plurality of blocks, subjecting them individually to a two-dimensional unitary transformation, transmitting or storing the transform coefficients and reconstructing the original blocks by the use of the inverse transformation. To reduce the data rate, the zero sequency coefficient is omitted for most or all the blocks, and the mean levels of the reconstructed blocks are adjusted to reduce visible brightness changes between them. me adjustment may be made to reduce the mean square differences between the elements in two blocks along the common boundary. The division into blocks may give common elements in two blocks along each inter-block boundary. If a picture transition coincides with a block division an indication of this may be sent so that differences between elements along the division are ignored.
438840
Cham Wai K.
Clarke Roger J.
Nicol Richard C.
British Telecommunications Public Limited Company
Ridout & Maybee Llp
LandOfFree
Image transmission does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Image transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image transmission will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1225839