Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A depth and image technology, applied in the field of 3D video realization, can solve problems such as huge artifacts
Active Publication Date: 2012-10-03
DOLBY INT AB
View PDF2 Cites 33 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
Traditional video codecs often result in huge artifacts around sharp edges
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0063] To encode depth maps efficiently, it is advantageous to simplify the representation of depth variations and complex edges. These representations are much easier to encode and also lead to a new encoding mode, Sparse Dyadic Mode. In one embodiment, edge information from 2D video is utilized along with simplified depth in order to recover depth map details. The resulting system can reduce the depth bitrate while maintaining the rendered view. Furthermore, in order to suppress strong coding artifacts in compressed depth maps, a new edge-protecting denoising filter is used in certain embodiments. To this end, certain filters utilize edge information in the corresponding video frame, optionally in the depth map. The filtering weights for a particular filter are determined by the proximity of sample locations, the similarity between collocated pixels in the video frame, and optionally, the similarity between depth samples. The filtering process can be incorporated into the...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
Several implementations relate, for example, to depth encoding and/or filtering for 3D video (3DV) coding formats. A sparse dyadic mode (308) for partitioning macroblocks (MBs) along edges in a depth map is provided as well as techniques for trilateral (or bilateral) filtering of depth maps that may include adaptive selection between filters sensitive to changes in video intensity and/or changes in depth. One implementation partitions a depth picture, and then refines the partitions based on a corresponding image picture. Another implementation filters a portion of a depth picture based on values for a range of pixels in the portion. For a given pixel in the portion that is being filtered, the filter weights a value of a particular pixel in the range by a weight that is based on one or more of location distance, depth difference, and image difference.
Description
[0001] Cross References to Related Applications [0002] This application claims the benefit of the filing dates of each of the following U.S. provisional applications, which are hereby incorporated by reference in their entirety: [0003] (1) Serial No. 61 / 278,989, filed on October 14, 2009, and the title of the invention "Coding and Decoding Depth Maps"; [0004] (2) Serial No. 61,278,984, filed on October 14, 2009, and the title of the invention "Upsampling Depth Maps Using Video Data"; [0005] (3) Serial No. 61 / 279,672, filed on October 23, 2009, and the title of the invention "Joint Filtering For Depth Map Coding"; [0006] (4) Serial No. 61 / 284,272, filed on December 16, 2009, and the title of the invention is "Joint Trilateral Filtering for Depth Compression"; [0007] (5) Serial No. 61 / 336,380, filed on January 21, 2010, and the title of the invention "Coding Depth Information"; [0008] (6) Serial No. 61 / 337,059, filed January 29, 2010, and title of the invention "A...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more