Multiple description coding video transmission using de-interlacing mechanisms
Multiple Description Coding (MDC) has been shown to be an effective technique for robust transmission of video data over networks including wireless systems and the Internet. A method is provided where the video signal ( 20 ) is interlaced and split into multiple streams before being encoded and transmitted over separate transmission channels ( 308, 310 ). At a receiver ( 320 ) side, de-interlacing algorithms may be applied and the streams are regrouped to form the original video signal ( 20 ). The use of interlacing and deinterlacing techniques improve the robustness of video transmission without having to modify existing equipment.
1 . A method of transmitting a progressive video sequence comprising steps of: interlacing the video signal separating the video signal into multiple streams of video signals encoding the streams of video signals using a plurality of encoders and transmitting the separate streams of encoded signals to a network.
2 . The method of claim 1 wherein the step of separating the video signal into multiple streams comprises separating the video signal into a stream of odd fields and a stream of even fields.
3 . A method of receiving a progressive video sequence comprising the steps of: receiving separate streams of encoded signals from a network; decoding the separate streams of video signals using a plurality of decoders de-interlacing the video signals using a de-interlacer and regrouping the streams to form a progressive video sequence.
4 . The method of claim 3 wherein the progressive video sequence comprises a series of video images and wherein the de-interlacer reconstructs a corrupted image based on one or multiple received neighboring images.
5 . The method of claim 4 wherein the de-interlacer reconstructs the corrupted signal using temporal information from the received signals.
6 . The method of claim 3 , wherein the de-interlacer reconstructs the corrupted signal using spatial and temporal information from the received signals.
7 . An improved method of receiving progressive video comprising: receiving the encoded streams at a receiver decoding the received streams of video; and reconstructing any portions of missing fields using de-interlacing algorithms.
8 . The method of claim 7 wherein the de-interlacing algorithms employ spatial and temporal information from the received streams to reconstruct the missing fields.
9 . The method of claim 8 wherein the step of separating the video comprises separating the video into a stream of odd fields and a stream of even fields wherein the odd fields comprise odd scanning lines of the video and the even fields comprise even scanning lines of the video.
10 . A device for communicating a progressive video sequence to a network comprising: means for interlacing the video sequence means for splitting the interlaced sequence into multiple streams of signals; means for separately encoding the multiple streams of signals; and means for transmitting the multiple streams of encoded signals over independent channels.
11 . A device for receiving a progressive video sequence from a network comprising: means for receiving multiple streams of encoded signals; means for separately decoding the multiple streams of signals; means for de-interlacing the decoded streams of signals; and means for regrouping the decoded streams into the video sequence.
12 . The device of claim 11 wherein the means for de-interlacing uses temporal information to reconstruct a corrupted signal.
13 . The device of claim 11 , wherein the means for de-interlacing uses spatial and temporal information from the received corrupted signals.
14 . The receiver of claim 11 , wherein de-interlacing is performed to reconstruct a signal that was corrupted during its transmission over the network.