PATENT CLAIM ANALYSIS

Application Number: 15747864
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2019-01
Patent Classification: ["375", "240120"]

Abstract:
Methods and devices are disclosed for panoramic video coding and decoding based on multi-mode boundary fill. If a predicted image block of a current image block is obtained by inter-frame prediction. The inter-frame prediction includes a boundary fill step of adaptively selecting a boundary fill method according to coordinates of a reference sample when the reference sample of a pixel in the current image block is outside the boundary of a corresponding reference image, to obtain a sample value of the reference sample. The panoramic video encoding and decoding method and device based on multi-mode boundary fill in the present invention make full use of the characteristic that horizontal image contents in a panoramic video are cyclically connected to optimize an image boundary fill method, such that the encoding can adaptively select a more reasonable boundary fill method according to the coordinates of a reference sample, thereby improving compression efficiency.

Claim (Index 5):
A panoramic video encoding device based on multi-mode boundary fill, comprising:\n an image block dividing module configured to divide the current image into a plurality of image blocks; an inter-frame prediction module configured to obtain a predicted image block of a current image block by inter-frame prediction, wherein the inter-frame prediction module comprises a boundary fill unit configured to adaptively select a boundary fill method according to coordinates of a reference sample when the reference sample of a pixel in the current image block is outside a boundary of a corresponding reference image, to obtain a sample value of the reference sample; a calculation module configured to subtract the current image block from the predicted image block to obtain a residual block; and a stream generating module configured to transform, quantize and entropy encode the residual block to obtain an encoded stream, wherein the boundary fill method selected by the boundary fill unit is written in a sequence header or an image header of the encoded stream.

Metadata:
- Claim Count in Document: 4.0
- Percentile: 86.0
- Lexical Diversity: 2.18056
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15746932', '15524829', '14113708', '14692134', '15777512']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4736363967143817
- 35 USC 102 Novelty (BERT): 0.4894336426409982
- Combined Prediction Score: 0.4752161213070434
- Mean Citation Score: 202.987646
- Max Citation Score: 241.64247000000003
- Similarity Product: 190.3400302321458

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test