A computer implemented method of storing pixel data corresponding to a pixel is disclosed. A first and a second set of pixel data is determined for the pixel. Parity bits for the first set of pixel data are generated, using error correction. An encoded version of the first set of pixel data including the parity bits is stored. An encoded version of the second set of pixel data is stored, using lossless data compression, for use in decoding the first set of pixel data.

DVC as generic file format for plenoptic camera

The invention provides a method and system for reducing redundant data blocks. The method includes reducing redundant data blocks by decoding a first data block from a first plurality of data blocks and a bitstream.

Method and system for efficient data transmission with server side de-duplication

Disclosed are a distributed video encoding/decoding method and a distributed video encoding/decoding apparatus, which can improve loss resilience and the quality of service. The distributed video encoding method first involves checking the state of a channel, determining a channel coding rate and the size of video data to be transmitted based on the checked state of a channel, determining the number of motion prediction performance steps based on the determined size of video data to be transmitted, encoding the video data to be transmitted by performing motion predictions according to the determined number of motion prediction performance steps, and channel-coding the encoded video data according to the determined channel coding rate. Accordingly, it is possible to improve loss resilience, even without additionally occupying network resources, thereby being capable of reducing the probability of decoding failure.

Distributed video coding/decoding method, distributed video coding/decoding apparatus, and transcoding apparatus

The present invention provides a remote control device, a far-end device, a multimedia system and a control method thereof. Said remote control device comprising: a communication unit for establishing a connection with a far-end device and performing communication; an operating unit for operating a specific program in said far-end device by the operation of the user; and a mode change unit for switching a operating mode in said remote control device according to feedback information associated with the specific program which is fed back by said far-end device in response to the operation in said operating unit. Through the remote control device, the far-end device, the multimedia system and the control method thereof, it may be operated in any device possessing communication function in despite of the hardware and system configuration of said device.

Remote control device, a far-end device, a multimedia system and a control method thereof

A method and system are disclosed for selecting a mode to encode video data. The method comprises the steps of (a) transforming a source video frame into a set of coefficients, (b) partitioning said set of coefficients into a plurality of subsets of the coefficients on the basis of probability statistics corresponding to a plurality of encoding modes, wherein each of said subsets is identified for encoding by one of the plurality of encoding modes. The method comprises the further steps of (c) for each of the plurality of subsets of coefficients, computing defined parameters of an associated probability distribution for said subset, and (d) repeating steps (b) and (c) until a predetermined termination condition is satisfied. When this predetermined termination condition is satisfied, the subsets of coefficients, as they exist at that time, are output to a video encoder, which preferably is a Wyner-Ziv encoder.

Method and system for coding mode selection in video compression systems

A Wyner-Ziv coding scheme jointly utilizes multiple side information at the decoder is described. A new probability model is introduced based on an extended turbo decoding trellis, so that the transitional probability is calculated from the probabilities conditioned on multiple side information. The proposed scheme handles multiple side information in a multi-dimensional manner to potentially achieve coding performance better than either selecting one side information or generating a single side information by averaging several side information. When the decoder receives multiple streams of parity bits, the conditional probabilities on the parity bits from the multiple streams all contribute in turbo decoding. The errors existing in some of the streams can be automatically eliminated during the decoding process.

Wyner-Ziv coding with multiple side information

Progressive distributed video coding is described. In one implementation, video data maybe encoded by arranging the data into bit-planes. The arrangement of bit-planes is adapted by shifting the first non-zero bit-plane left by one place in the binary digits and moving the sign bit immediately in the place vacated by the shifted non-zero bit-plane. The adapted bit-planes are then encoded using an asymmetric Slepian-Wolf encoder.

Progressive Distributed Video Coding

Request bits estimation for a Wyner-Ziv codec is described. In one aspect, and prior to communicating Wyner-Ziv parity bits to a Wyner-Ziv decoder, an estimated total number of parity bits to send to the Wyner-Ziv decoder are determined. This estimated number of parity bits allows the Wyner-Ziv decoder to reconstruct a frame of different coded content using the Wyner-Ziv parity bits such that the reconstructed frame will meet particular quality criteria. This estimated number of parity bits is determined independent of a request-bits feedback loop between the Wyner-Ziv coder and the Wyner-Ziv decoder. The estimated number of parity bits is communicated to the Wyner-Ziv decoder for reconstruction and presentation of the frame to a user.

Request bits estimation for a wyner-ziv codec

L'invention concerne une requete d'estimation de bits pour un codec de Wyner-Ziv. Selon un premier aspect, et avant de communiquer des bits de parite de Wyner-Ziv a un decodeur de Wyner-Ziv, un nombre total estime de bits de parite a envoyer au decodeur de Wyner-Ziv est determine. Ce nombre de bits de parite estime permet au decodeur de Wyner-Ziv de reconstruire la trame d'un contenu code different en utilisant les bits de parite de Wyner-Ziv de telle sorte que la trame reconstruite va satisfaire des criteres de qualite particuliers. Ce nombre de bits de parite estimes est determine independamment d'une boucle en retroaction de bits de requete entre le codeur de Wyner-Ziv et le decodeur de Wyner-Ziv. Le nombre de bits de parite estime est communique au decodeur de Wyner-Ziv pour reconstruction et presentation de la trame a un utilisateur.

Mei Guo

Papers

Wyner-Ziv coding with multiple side information

Progressive Distributed Video Coding

Request bits estimation for a wyner-ziv codec

Requête d'estimation de bits pour un codec wyner-ziv