公开(公告)号：US10944990B2

公开(公告)日：2021-03-09

申请号：US16024529

申请日：2018-06-29

Applicant: THOMSON Licensing

Inventor： Benoit Vandame ,  Fabien Racape ,  Paul Kerbiriou

IPC: H04N19/597 ,  H04N19/136 ,  H04N19/176 ,  H04N5/30 ,  H04N19/593

Abstract: A method for encoding at least one matrix of image views obtained from data acquired by a plenoptic camera is disclosed. Image views of the matrix of image views are partitioned into blocks. For a given image view of the at least one matrix of views, the method includes obtaining at least one block to be encoded and a matching block, wherein a difference between the at least one block to be encoded and the matching block fulfills a block matching criterion; determining a residual block regarding the at least one block to be encoded and the matching block, the determining using modified pixels of the at least one block to be encoded and modified pixels of the matching block according to flux variation parameters associated with a pixel sensor of the plenoptic camera; and encoding the residual block.

公开(公告)号：US10362291B2

公开(公告)日：2019-07-23

申请号：US15176119

申请日：2016-06-07

Applicant: THOMSON LICENSING

Inventor： Mozhdeh Seifi ,  Benoit Vandame ,  Valter Drazic

IPC: H04N13/00 ,  H04N5/217 ,  H04N5/225 ,  H04N5/357 ,  H04N19/597 ,  H04N13/232 ,  H04N13/229

Abstract: A light-field capture device including a photo-sensor, a main lens configured to refract light from a scene towards an image focal field, a micro-lens array positioned in the image focal field between the main lens and the photo-sensor, each micro-lens being configured to project a micro-lens image onto a respective dedicated area of the photo-sensor. The light-field capture device is provided with at least one compressive sensing calculation unit connected to at least one of the dedicated areas and configured to calculate data such as for example standard deviation data representative of the homogeneity of input pixels of said dedicated area, and to provide output data representative of the input pixels of said dedicated area; the output data comprising either a number of output pixels corresponding to the number of input pixels, or a single output pixel, depending on the relative value of the homoegeneity compared with a threshold.

公开(公告)号：US09807368B2

公开(公告)日：2017-10-31

申请号：US15236470

申请日：2016-08-14

Applicant: THOMSON LICENSING

Inventor： Benoit Vandame ,  Mathilde Brossard ,  Valter Drazic

IPC: H04N13/02 ,  G06T7/557 ,  G06T3/40 ,  G02B3/00 ,  G02B5/20

CPC classification number: H04N13/232 ,  G02B3/0056 ,  G02B5/201 ,  G06T3/4015 ,  G06T7/557 ,  H04N13/207 ,  H04N13/257

Abstract: A plenoptic camera is proposed having a color filter array positioned on an image sensor with an array of pixels, the color filter array having a first filter with a set of unit elements, each unit element covering M×M pixels of the image sensor, with M an integer such that M≧2. The plenoptic camera further includes a set of micro-lens, each micro-lens delivering a micro-lens image on the image sensor with a diameter equal to p=k×M, with k being an integer greater than or equal to two. The first filter is remarkable in that the set of unit elements comprises an initialization unit element being associated with a matrix ( c m , n ) 0 ≤ m

公开(公告)号：US10594999B2

公开(公告)日：2020-03-17

申请号：US15631009

申请日：2017-06-23

Applicant: THOMSON LICENSING

Inventor： Jurgen Stauder ,  Benoit Vandame ,  Cedric Thebault

IPC: G06T15/06 ,  H04N13/128 ,  H04N13/282 ,  G06T7/80 ,  G06T3/40 ,  G06T15/20

Abstract: A method for creating a pair of stereoscopic images is described. The method includes using at least one lightfield camera which receives respective required camera parameters for a left view and a right view. The required camera parameters define a theoretical stereo image pair to acquire respective actual camera parameters for respective sub aperture images that are generated based on the captured image by the lightfield cameras, to determine a best matching sub aperture image for the left view by comparing the required camera parameter for the left view with the actual camera parameters for the respective sub aperture images, to determine a best matching sub aperture image for right view by comparing the required camera parameter for right view with the actual camera parameters for the respective sub aperture images, and to associate the best matching sub aperture image for left view and the best matching sub aperture image for right view as a pair of stereoscopic images.

公开(公告)号：US10536718B2

公开(公告)日：2020-01-14

申请号：US15757417

申请日：2016-09-05

Applicant: THOMSON Licensing

Inventor： Philippe Guillotel ,  Dominique Thoreau ,  Benoit Vandame ,  Patrick Lopez ,  Guillaume Boisson

IPC: H04N19/597 ,  H04N19/105 ,  H04N19/162 ,  H04N19/172 ,  H04N19/117 ,  H04N13/117 ,  H04N13/161

Abstract: A method for encoding a current focal stack is disclosed that comprises a set of images focused at a different focalization distance from one image to another. According to present disclosure, the method comprises: —encoding (31) information representing an image of the current focal stack, the image being selected in said current focal stack according to an image sharpness criterion, and reconstructing the image into a reconstructed image; —encoding (32) at least another image of the current focal stack by prediction from at least the reconstructed image.

公开(公告)号：US10116867B2

公开(公告)日：2018-10-30

申请号：US15167921

申请日：2016-05-27

Applicant: THOMSON LICENSING

Inventor： Laurent Blonde ,  Benoit Vandame ,  Paul Kerbiriou

IPC: H04N5/232 ,  H04N1/00 ,  G06T7/00 ,  H04N5/225

Abstract: A method for displaying at least one light field based image on a user's device is disclosed. Such a method comprises displaying the image focused according to at least one focusing parameter determined as a function of a pose of the user's device. A sensor embedded in the users' device, which may be a handheld device, may estimate the pose.

公开(公告)号：US09900582B2

公开(公告)日：2018-02-20

申请号：US15198643

申请日：2016-06-30

Applicant: THOMSON LICENSING

Inventor： Benoit Vandame ,  Thierry Borel ,  Louis Chevallier

IPC: H04N13/02 ,  H01L27/146 ,  G02B3/00 ,  H04N5/225 ,  H04N5/357

CPC classification number: H04N13/257 ,  G02B3/0056 ,  H01L27/14621 ,  H04N5/2254 ,  H04N5/3572 ,  H04N13/207

Abstract: A sensor 4 targeted to be mounted on a plenoptic camera comprises at least one microimage area targeted to sense a microimage refracted by a microlens array, the microimage area being at least partially covered by a color filter array, wherein the color saturation of the color filter array decreases when getting away from a centroid (xi,j, yi,j) of the microimage area.

公开(公告)号：US10334229B2

公开(公告)日：2019-06-25

申请号：US15152255

申请日：2016-05-11

Applicant: THOMSON LICENSING

Inventor： Benoit Vandame ,  Mozhdeh Seifi ,  Valter Drazic

IPC: H04N13/25 ,  H04N13/246 ,  H04N5/225 ,  H04N17/00 ,  G02B27/00 ,  H04N13/122 ,  H04N13/00

Abstract: A method for obtaining a refocused image from a 4D raw light field data for a given focus (zfocus) is described. The method is remarkable in that it comprises applying a shift correction parameter on shifted and summed images from said 4D raw light field data, the shifted and summed images being defined as a function of the given focus (zfocus), and the shift correction parameter (Δ) including, for at least a part of pixels of at least two sub-aperture images derived from at least one 4D light field data of a test-chart image, determined shifts for pixels belonging to the part of pixels between the at least two sub-aperture images, the test-chart image comprising patterns adequate to compute disparities between the sub-apertures images.

公开(公告)号：US10165254B2

公开(公告)日：2018-12-25

申请号：US15143549

申请日：2016-04-30

Applicant: THOMSON LICENSING

Inventor： Valter Drazic ,  Benoit Vandame ,  Arno Schubert

IPC: H04N13/236 ,  H04N5/232 ,  H04N5/235 ,  G06K9/00 ,  G06K9/46 ,  H04N13/221

Abstract: A method for obtaining light field data of a scene from a sequence of images of the scene, each image being captured at a different viewpoint using a non-light-field image capture device is described. The method includes obtaining a reference image of the scene at a reference viewpoint, an interest area of the scene being included in the reference image and a reference position (x0,y0) being associated with the interest area in a reference local coordinate system of the capture device. For a current image of the scene at a current viewpoint, the method identifies the interest area of the scene in the current image, determines, in the reference local coordinate system, a current position (xc,yc) of the interest area identified in the current image, compares the current position with the reference position and provides a capture guidance indicator adapted to guide in relative positioning of the capture device towards the interest area, as a function of results of the comparison between the current position and the reference position.

公开(公告)号：US20160182813A1

公开(公告)日：2016-06-23

申请号：US14975766

申请日：2015-12-19

Applicant: THOMSON LICENSING

Inventor： Pierrick Jouet ,  Valter Drazic ,  Philippe Robert ,  Benoit Vandame

IPC: H04N5/232 ,  G06T15/20 ,  H04N5/222 ,  G06T7/00

CPC classification number: H04N5/23212 ,  G06T5/50 ,  G06T7/557 ,  G06T7/571 ,  G06T15/205 ,  G06T2200/21 ,  G06T2207/10024 ,  G06T2207/10028 ,  G06T2207/10052 ,  G06T2207/20108 ,  G06T2207/20221 ,  H04N5/222 ,  H04N5/2226

Abstract: A method for generating an adapted slice image from a focal stack of refocused images using an all-in-focus image derived from the focal stack comprises: selecting a slice image in the focal stack; selecting at least one object in the all-in-focus image to be focused in the adapted slice image; and generating the adapted slice image by combining the selected at least one object in the all-in-focus image onto the selected slice image.

Abstract translation: 一种使用从聚焦堆栈导出的全焦点图像从聚焦图像的焦点堆叠生成适应切片图像的方法包括：选择焦点堆叠中的切片图像; 在所述全焦点图像中选择要聚焦在所述适应切片图像中的至少一个对象; 以及通过将全焦点图像中的所选择的至少一个对象组合到所选择的切片图像上来生成适应的切片图像。