摘要:
In an image processing method to display a stereoscopic image on a target screen, a disparity information (200) is associated with the stereoscopic image and is adapted for the display of the stereoscopic image on an original screen, the size of the original screen being different from the size of the target screen, the stereoscopic image comprising a first image (20) and a second image (21). In order to optimize the disparity of the stereoscopic image, the method comprises selecting a part of said first image according to at least one property associated with the first image; calculating a target disparity information associated with the selected part of the image according to the viewing conditions associated with the target screen and the original disparity information associated with the selected part of the first image.
摘要:
In an image processing method to display a stereoscopic image on a target screen, a disparity information (200) is associated with the stereoscopic image and is adapted for the display of the stereoscopic image on an original screen, the size of the original screen being different from the size of the target screen, the stereoscopic image comprising a first image (20) and a second image (21). In order to optimise the disparity of the stereoscopic image, the method comprises selecting a part of said first image according to at least one property associated with the first image; calculating a target disparity information associated with the selected part of the image according to the viewing conditions associated with the target screen and the original disparity information associated with the selected part of the first image.
摘要:
The device comprises the means to generate a stream structured on several levels: a level 0 comprising two layers, a base layer containing the video data of the right image and a level 0 enhancement layer containing the video data of the left image, or conversely, a level 1 comprising two enhancement layers, a first level 1 enhancement layer containing a depth map relating to the image of the base layer, a second level 1 enhancement layer containing a depth map relating to the level 0 enhancement layer image, a level 2 comprising a level 2 enhancement layer containing occlusion data relating to the base layer image. Applications for coding 3D data relating to 3D digital cinema, 3D DVD, 3D TV, etc.
摘要:
The invention relates to the encoding of visual data captured by two or more cameras in a layered depth format.The invention proposes a method and device for layered s depth image encoding. The device is adapted for encoding at least one occlusion layer of the layered depth image with a greater horizontal width than a foreground layer of the layered depth image. The method comprises a corresponding step. Further, a non-transitory storage medium carrying at least one encoded layered depth image is proposed.The additional horizontal width can be used for conveying the part of information which is provided in the images/videos captured by the at least two cameras but not comprised in the foreground layer.
摘要:
A method for coding a 3D video signal is described. The coding method comprises a step of coding current, depth and occlusion images. According to the invention, the current occlusion image is coded according to the following steps for: coding for each block of the current occlusion image a binary identifier indicating if said block is coded or not, and coding occlusion data for each block for which the binary identifier indicates that the block is coded.
摘要:
The method implements an update step which is a selection among at least the following coding modes: a default coding mode which doesn't use the motion compensation for the calculation of the pixel if the pixel is not connected or which performs a low pass motion compensated temporal filtering of picture H of same level if the pixel is connected, an update_MV coding mode which performs a low pass motion compensated temporal filtering of picture H of same level according to a default motion vector calculated by taking into account motion vectors belonging to regions or pixels in the vicinity of the pixel to be calculated. Applications relate to video compression for transmission or storage of data.
摘要:
The invention relates to a method for reconstructing a picture that is part of a sequence of pictures, from coded digital data, representative of said current picture. It comprises the following steps: construct, for each picture block, first and second prediction blocks (from a first picture and a second picture previously reconstructed, and calculate, for each block, a confidence value representative of the proximity between the visual content of the first predictive block and the visual content of the second predictive block, and reconstruct each block from a part of said coded digital data representative of said block and initial auxiliary data calculated from the first and second predictive blocks when the block confidence value is greater than a predetermined threshold.
摘要:
The invention relates to spatially scalable encoding and decoding processes using a method for deriving coding information. More particularly, it relates to a method for deriving coding information for high resolution pictures from the coding information of low resolution pictures. The method mainly comprises the following steps: Computing geometrical parameters characterizing the position of said high layer macroblock relatively to the corresponding base layer macroblocks and deriving from these parameters a macroblock class; Deriving a partition and possibly sub-partitions for each partition of said high layer macroblock from corresponding base layer macroblocks partition and sub-partitions on the basis of the geometrical parameters and HL MB class; and Deriving motion information for said high layer macroblock from motion information of corresponding base layer macroblocks.
摘要:
The invention relates to a method for reconstructing a picture that is part of a sequence of pictures, from coded digital data, representative of said current picture. It comprises the following steps: construct, for each picture block, first and second prediction blocks (from a first picture and a second picture previously reconstructed, and calculate, for each block, a confidence value representative of the proximity between the visual content of the first predictive block and the visual content of the second predictive block, and reconstruct each block from a part of said coded digital data representative of said block and initial auxiliary data calculated from the first and second predictive blocks when the block confidence value is greater than a predetermined threshold.
摘要:
The invention relates to spatially scalable encoding and decoding processes using a method for deriving coding information. More particularly, it relates to a method for deriving coding information for high resolution pictures from the coding information of low resolution pictures. The method mainly comprises the following steps: Computing geometrical parameters characterizing the position of said high layer macroblock relatively to the corresponding base layer macroblocks and deriving from these parameters a macroblock class; Deriving a partition and possibly sub-partitions for each partition of said high layer macroblock from corresponding base layer macroblocks partition and sub-partitions on the basis of the geometrical parameters and HL MB class; and Deriving motion information for said high layer macroblock from motion information of corresponding base layer macroblocks.