公开(公告)号：US10887608B2

公开(公告)日：2021-01-05

申请号：US16610751

申请日：2018-05-03

Applicant: SISVEL TECHNOLOGY S.R.L.

Inventor： Yung-Hsuan Chao ,  Gene Cheung ,  Antonio Ortega

IPC: H04N19/46 ,  H04N19/176 ,  H04N19/117 ,  H04N19/182 ,  H04N13/229 ,  H04N13/232 ,  H04N13/161

Abstract: A method for encoding a raw lenselet image includes a receiving phase, wherein at least a portion of a raw lenselet image is received, the image including a plurality of macro-pixels, each macro-pixel having pixels corresponding to a specific view angle for the same point of a scene, and an output phase, wherein a bitstream having at least a portion of an encoded lenselet image is outputted. The method has an image transform phase, wherein the pixels of said raw lenselet image are spatially displaced in a transformed multi-color image having a larger number of columns and rows with respect to the received raw lenselet image, wherein dummy pixels having undefined value are inserted into the raw lenselet image and wherein the displacement is performed so as to put the estimated center location of each macro-pixel onto integer pixel locations. Moreover, the method includes a sub-view generation phase, wherein a sequence of sub-views is generated, said sub-views having pixels of the same angular coordinates extracted from different macro-pixels of the transformed raw lenselet image. Finally, the method has a graph coding phase, wherein a bitstream is generated by encoding a graph representation of at least one of the sub-views of the sequence according to a predefined graph signal processing technique.

公开(公告)号：US20200077100A1

公开(公告)日：2020-03-05

申请号：US16610751

申请日：2018-05-03

Applicant: SISVEL TECHNOLOGY S.R.L.

Inventor： Yung-Hsuan Chao ,  Gene Cheung ,  Antonio Ortega

IPC: H04N19/176 ,  H04N19/182 ,  H04N13/161 ,  H04N13/229 ,  H04N13/232 ,  H04N19/117 ,  H04N19/46

Abstract: A method for encoding a raw lenselet image includes a receiving phase, wherein at least a portion of a raw lenselet image is received, the image including a plurality of macro-pixels, each macro-pixel having pixels corresponding to a specific view angle for the same point of a scene, and an output phase, wherein a bitstream having at least a portion of an encoded lenselet image is outputted. The method has an image transform phase, wherein the pixels of said raw lenselet image are spatially displaced in a transformed multi-color image having a larger number of columns and rows with respect to the received raw lenselet image, wherein dummy pixels having undefined value are inserted into the raw lenselet image and wherein the displacement is performed so as to put the estimated center location of each macro-pixel onto integer pixel locations. Moreover, the method includes a sub-view generation phase, wherein a sequence of sub-views is generated, said sub-views having pixels of the same angular coordinates extracted from different macro-pixels of the transformed raw lenselet image. Finally, the method has a graph coding phase, wherein a bitstream is generated by encoding a graph representation of at least one of the sub-views of the sequence according to a predefined graph signal processing technique.