Samsung Eletronica Da Amazonia Ltda.

Universidade Federal Do Rio De Janeiro

Carla Liberal Pagliari

Vanessa Testoni

Pedro Garcia Freitas

Marcio Pinto Pereira

Gustavo De Oliveira E Alves

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

Growing community of inventors

Rio de Janeiro, Brazil

Carla Liberal Pagliari