公开(公告)号：US09661334B2

公开(公告)日：2017-05-23

申请号：US14608168

申请日：2015-01-28

Applicant: THOMSON LICENSING

Inventor： Martin Alain ,  Dominique Thoreau ,  Philippe Guillotel ,  Christine Guillemot

IPC: H04N19/176 ,  H04N19/89 ,  H04N19/593 ,  H04N19/90 ,  H04N19/147

CPC classification number: H04N19/176 ,  H04N19/147 ,  H04N19/593 ,  H04N19/89 ,  H04N19/99

Abstract: A method for constructing an epitome from an image divided into non overlapping blocks is disclosed. The method comprises: determining, for each block, similar patches in the image, a similar patch being a patch with similar content; constructing at least one epitome chart for the picture from the similar patches; wherein determining, for each block, similar patches in the image comprises: a) determining, for each current block, similar blocks in the image, a similar block being a block with content similar to the content of the current block; b) determining, for one current block and for the similar blocks determined for the current block, similar patches in the image, a similar patch being a patch with content similar to the content of the current block; c) repeating step b) for a next current block for which no similar patch is determined until at least one similar patch is determined for each block in the image.

公开(公告)号：US10271060B2

公开(公告)日：2019-04-23

申请号：US15092587

申请日：2016-04-06

Applicant: THOMSON LICENSING

Inventor： Philippe Guillotel ,  Martin Alain ,  Dominique Thoreau ,  Mehmet Turkan

IPC: H04N19/30 ,  H04N19/46

Abstract: A method for generating at least one image with a first dynamic range, from an image with a second dynamic range, which is lower than the first dynamic range is described. The method includes obtaining an epitome of the image with a first dynamic range, called a first epitome. Thereafter, the image with a first dynamic range is generated from the image with a second dynamic range and the first epitome.

公开(公告)号：US10652577B2

公开(公告)日：2020-05-12

申请号：US15759215

申请日：2016-09-14

Applicant: THOMSON Licensing

Inventor： Dominique Thoreau ,  Mikael Le Pendu ,  Martin Alain ,  Mehmet Turkan

IPC: H04N19/597 ,  H04N19/15 ,  H04N19/577 ,  G06T15/20 ,  H04N13/161 ,  H04N19/103 ,  H04N19/172

Abstract: The present disclosure generally relates to a method for predicting at least one block of pixels of a view (170) belonging to a matrix of views (17) obtained from light-field data belong with a scene, According to present disclosure, the method is implemented by a processor and comprises for at least one pixel to predict of said block of pixels: —from said matrix of views (17), obtaining (51) at least one epipolar plane image (EPI) belong with said at least one pixel to predict, —among a set of bidirectional prediction modes, determining (52) at least one optimal bidirectional prediction mode from a set of previous reconstructed pixels neighbouring said at least one pixel to predict in said at least one epipolar plane image, —extrapolating (53) a prediction value of said at least one pixel to predict by using said at least one optimal bidirectional prediction mode.

公开(公告)号：US09948956B2

公开(公告)日：2018-04-17

申请号：US14739081

申请日：2015-06-15

Applicant: THOMSON LICENSING

Inventor： Mikael Le Pendu ,  Dominique Thoreau ,  Christine Guillemot ,  Martin Alain

IPC: H04N19/625 ,  H04N19/42 ,  H04N19/44 ,  H04N19/176 ,  H04N19/593 ,  H04N19/463 ,  H04N19/126 ,  H04N19/136 ,  H04N19/98

CPC classification number: H04N19/625 ,  H04N19/126 ,  H04N19/136 ,  H04N19/176 ,  H04N19/42 ,  H04N19/45 ,  H04N19/463 ,  H04N19/593 ,  H04N19/98

Abstract: A method for encoding and decoding an image block, an encoder, and a decoder are provided. The method for encoding an image block comprises: determining a local dynamic range of the block; adaptively precision-extending pixel values of the block based on the local dynamic range of the block; and encoding the block with an adaptively extended precision. The method for decoding an image block comprises: determining a minimum pixel value of the block and an indicating value for indicating a precision extension factor according to precision extension information; decoding the block according to the indicating value; and de-extending precision of the decoded block based on the minimum pixel value of the block and the precision extension factor. The precision of the intermediate calculations may be improved without increasing an original intermediate bit depth used in intermediate calculations.

公开(公告)号：US20160300335A1

公开(公告)日：2016-10-13

申请号：US15092587

申请日：2016-04-06

Applicant: THOMSON LICENSING

Inventor： Philippe GUILLOTEL ,  Martin Alain ,  Dominique Thoreau ,  Mehmet Turkan

IPC: G06T5/00 ,  H04N19/44 ,  H04N19/46

CPC classification number: H04N19/46 ,  G06T2207/20208 ,  H04N19/30

Abstract: A method for generating at least one image with a first dynamic range, from an image with a second dynamic range, which is lower than the first dynamic range is described. The method includes obtaining an epitome of the image with a first dynamic range, called a first epitome. Thereafter, the image with a first dynamic range is generated from the image with a second dynamic range and the first epitome.

Abstract translation: 描述了从具有低于第一动态范围的第二动态范围的图像生成具有第一动态范围的至少一个图像的方法。 该方法包括以第一动态范围获得图像的缩影，称为第一缩影。 此后，从具有第二动态范围的图像和第一缩影图像生成具有第一动态范围的图像。