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Method and apparatus for generating, storing, transmitting, receiving and reproducing depth maps

A depth and image technology, applied in image communication, digital video signal modification, stereo system, etc., can solve very laborious problems

Active Publication Date: 2019-10-18
SISVEL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Regarding 3D video representation, managing the generation and distribution of a large number of views is a very laborious task

Method used

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  • Method and apparatus for generating, storing, transmitting, receiving and reproducing depth maps
  • Method and apparatus for generating, storing, transmitting, receiving and reproducing depth maps
  • Method and apparatus for generating, storing, transmitting, receiving and reproducing depth maps

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Embodiment Construction

[0051] Several specific variants of the implementation of the basic idea of ​​the invention will be described below, which allow for various possible arrangements of the two depth maps in a single color image with dimensions W×H pixels (as already explained, This single color image can in turn be input into a larger composite frame that also contains other images related to the same stereoscopic video stream).

[0052] Let us consider two depth maps with WxH resolution, which correspond to 2xWxH samples for 8 bits, ie 2xWxH bytes. The pair of maps is to be input into a single 4:2:0 or 4:2:2 YUV "composite" color image with WxH resolution.

[0053] Various embodiments of the invention described below are based on the use of a frame packing format for inputting two depth maps into a WxH sized rectangle. The two depth maps can be arranged in top-bottom mode, for example, by reducing their resolution to W×(H / 2) and placing them in the upper and lower parts of only the Y component...

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Abstract

The present disclosure relates to methods and apparatus for generating, storing, transmitting, receiving and reproducing depth maps. A method is described for generating a color image consisting of a plurality of components (Y, U, V) by starting from at least one depth or disparity map (DM1, DM2), wherein the at least one depth or disparity map The first set of pixels of (DM1, DM2) are input into the luminance component (Y) of the color image, and wherein the second and third sets of pixels of the at least one depth or disparity map (DM1, DM2) are input into the two chrominance components (U, V) of the color image.

Description

technical field [0001] The present invention relates to a method and an apparatus for generating, storing, transmitting, receiving and reproducing a depth map by using color components of an image belonging to a three-dimensional video stream. Background technique [0002] The development of stereoscopic video applications relies heavily on the availability of efficient formats for representing and compressing three-dimensional video signals. Also, in television broadcasting applications (3D-TV), it is necessary to maintain the greatest possible degree of backward compatibility with existing 2D systems. [0003] For distribution (or delivery), the current most widespread technical solutions are based on so-called "frame compatible positioning", in which two stereoscopic views related to the same point in time are rescaled and constructed to form a frame compatible with existing formats. of a single image. Among these schemes, top-and-bottom, side-by-side and tile formats a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N1/32H04N13/15H04N13/161H04N19/59H04N19/597H04N19/63H04N19/80
CPCH04N1/32309H04N19/597H04N19/63H04N19/80H04N19/59H04N13/161H04N13/15H04N13/20H04N19/186H04N13/271H04N1/642H04N13/139
Inventor M·格兰齐托M·卢森特福特P·达马托
Owner SISVEL TECH