Samsung Eletronica Da Amazonia Ltda.

Universidade Federal Do Rio De Janeiro

Gustavo De Oliveira E Alves

Vanessa Testoni

Pedro Garcia Freitas

Carla Liberal Pagliari

Marcio Pinto Pereira

Murilo Bresciani De Carvalho

Fernando Manuel Bernardo Pereira

Ismael Seidel

Carla Florentino Schueler

Eduardo Antônio Barros Da Silva

Eduardo Antânio Barros Da Silva

The present invention relates to a prediction-based technique for encoding light field data by removing redundant information of light field data, reducing a number of bits by employing a prediction of a pixel value in all four dimensions of the light field. Using this technique to represent light field data, allows it to be transferred through a limited-bandwidth medium and/or to significantly reduce the required storage capacity for this purpose.

Method for four-dimensional intra-prediction coding and decoding of light field data

A method for compressing light field data using variable block-size four-dimensional transform and bit-plane hexadeca-tree decomposition, the method including: partitioning a four-dimensional pixel data of a light field into four-dimensional blocks of independent fixed size; partitioning the four-dimensional blocks in a set of four-dimensional non-overlapping sub-blocks of different sizes according to a rate-distortion criterion; independently transforming the four-dimensional sub-blocks generated in the previous operation, using a four-dimensional transform; quantizing by bit-planes the sub-blocks transformed by the four-dimensional transform according to Rate-Distortion optimized hexadeca-tree structure; and encoding the four-dimensional quantized data generated through an arithmetic encoder to produce a compressed representation of the light field.

Method for compressing light field data using variable block-size four-dimensional transforms and bit-plane decomposition

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Rio de Janeiro, Brazil

Gustavo De Oliveira E Alves