PATENT CLAIM ANALYSIS

Application Number: 16120731
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2018-12
Patent Classification: ["375", "240160"]

Abstract:
The missing of a depth map for a current picture of a reference view—due to the transmission thereof being not anticipated anyway, or due to the advantageous coding order between a texture/picture and its depth map, or due an anticipated discarding of depth data from the bitstream during transmission or decoding—may be adequately addressed so as to reduce inter-view redundancies by estimating a depth map for the pictures of the reference and dependent views and updating same using motion and/or disparity data signaled within the multi-view data stream. In particular, virtually all multi-view data streams have random access points defined therein, i.e. time instances corresponding to pictures of the views of the multi-view signal which are coded without temporal prediction and other dependencies to previously coded pictures, but merely using intra prediction as far as the reference view is concerned, and intra prediction as well as disparity-based prediction as far as the dependent view is concerned. Accordingly, the disparity data signaled within the multi-view data stream for inter-view prediction is exploited to initialize a depth map estimate for the dependent view, and this primary depth map estimate is consecutively updated during the further course of the multi-view coding using motion data and/or disparity data signal within the multi-view data stream. The thus obtained depth map estimate continuously updated, enables the dependent various methods of inter-view redundancy reduction to be performed in a more efficient way than without having access to this depth map estimate. According to another aspect, the following discovery is exploited: the overhead associated with an enlarged list of motion predictor candidates for a block of a picture of a dependent view is comparatively low compared to a gain in motion vector prediction quality resulting from an adding of a motion vector candidate which is determined from an, in disparity-compensated sense, co-located block of a reference view.

Claim (Index 1):
An apparatus for reconstructing a multi-view signal coded in a data stream, comprising:\n a dependent view reconstructor configured for: processing a list of plurality of motion vector candidates associated with a coding block of a current picture in a dependent view of the multi-view signal, the processing including comprising:\n estimating a first motion vector based on a second motion vector associated with a reference block in a current picture of a reference view of the multi-view signal, the reference block corresponding to the coding block of the current picture in the dependent view, \n adding the first motion vector into the list of plurality of motion vector candidates, and \n extracting, from the data stream, index information that specifies at least one of the list of motion vector candidates to be used for motion-compensated prediction; and \n reconstructing the coding block in the current picture of the dependent view by performing the motion-compensated prediction based on the at least one of the list of motion vector candidates.

Metadata:
- Claim Count in Document: 44.0
- Percentile: 97.0
- Lexical Diversity: 2.24658
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14272671', '14273730', '14277850', '14429498', '13772917']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5906922228495713
- 35 USC 102 Novelty (BERT): 0.5883688511617857
- Combined Prediction Score: 0.5904598856807928
- Mean Citation Score: 456.625062
- Max Citation Score: 540.7312
- Similarity Product: 434.7111533254624

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test