PATENT CLAIM ANALYSIS

Application Number: 15773525
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-11
Patent Classification: ["375", "240250"]

Abstract:
In a method to reconstruct a high dynamic range video signal, a decoder receives parameters in the input bitstream to generate a prediction function. Using the prediction function, it generates a first set of nodes for a first prediction lookup table, wherein each node is characterized by an input node value and an output node value. Then, it modifies the output node values of one or more of the first set of nodes to generate a second set of nodes for a second prediction lookup table, and generates output prediction values using the second lookup table. Low-complexity methods to modify the output node value of a current node in the first set of nodes based on computing modified slopes between the current node and nodes surrounding the current node are presented.

Claim (Index 1):
A method of constructing, in a decoder, a lookup table for prediction of high dynamic range image data from standard dynamic range data received by the decoder, the method comprising:\n accessing a prediction function for the prediction of high dynamic range image data; generating a first set of nodes for a first lookup table (LUT), using the prediction function, wherein each node is characterized by an input node value and an output node value; modifying the output node value of at least one node in the first set of nodes to generate a second set of nodes in a second lookup table, for generating predicted high dynamic range output values, said modifying comprising: for a current node in the first set of nodes:\n determining a first prior node and a second prior node to the current node, wherein the first prior node is closer to the current node than the second prior node; \n determining a first slope between the first prior node and the current node; \n determining a second slope between the second prior node and the first prior node; \n determining a first tangent slope to the first prior node based on the first slope and the second slope; \n determining a first modified slope based on the first tangent slope, the first slope, and a weighting parameter; and \n determining a first modified output value of the current node based on the first modified slope and the first prior node.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 93.0
- Lexical Diversity: 2.22222
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15765463', '15795093', '15764308', '16324468', '16312251']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4472542676927394
- 35 USC 102 Novelty (BERT): 0.5082754139479554
- Combined Prediction Score: 0.4533563823182611
- Mean Citation Score: 242.408286
- Max Citation Score: 270.95828
- Similarity Product: 204.8955223758435

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

Dataset: test