PATENT CLAIM ANALYSIS

Application Number: 16091078
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-04
Patent Classification: ["375", "240260"]

Abstract:
Methods for the chroma reshaping of high-dynamic range (HDR) signals are presented. For each input pixel, a first scaler is generated based on the pixel luminance and a luma-based chroma reshaping (LCR) function. A second scaler is generated based on a saturation-based chroma reshaping (SCR) function and the saturation value of the pixel. A cascaded scaler is generated by multiplying the first scaler with the second scaler. Reshaped chroma values are generated by multiplying the input chroma values with the cascaded scaler. The characteristics of preferred LCR and SCR functions are discussed. Inverse decoding methods based on chroma-reshaping metadata that define the LCR and SCR functions are also described.

Claim (Index 10):
In a decoder, a method to perform inverse reshaping of chroma components of a high dynamic range image, the method comprising:\n receiving a reshaped high dynamic range image comprising pixels, wherein each pixel comprises a luminance component, a first reshaped chroma component CT ccr  and a second chroma reshaped component CP ccr ; and for a pixel in the reshaped high dynamic range image:\n generating a first inverse scaler as a function of the luma component of the pixel, by applying, to the luma component of the pixel, the inverse of a function that generates values of a first forward scaler which are larger for a mid-range of luma values than for other luma values; \n generating the reshaped colour saturation of the pixel as a function of the first and second reshaped chroma components according to the function Sat ccr =\u221a{square root over (CT ccr 2 +CP ccr 2 )} \n generating a second inverse scaler as a piecewise, monotonically decreasing function of the reshaped colour saturation of the pixel; and \n generating, as first and second inverse reshaped chroma components in the IC T C P  color format for the pixel, i) the multiplicative product of the first reshaped chroma component, the first inverse scaler and the second inverse scaler and ii) the multiplicative product of the second reshaped chroma component, the first inverse scaler and the second inverse scaler.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 97.0
- Lexical Diversity: 2.12069
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16303028', '16094201', '16324468', '16087241', '15749231']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4818586590541887
- 35 USC 102 Novelty (BERT): 0.5424292837556396
- Combined Prediction Score: 0.4879157215243338
- Mean Citation Score: 326.643908
- Max Citation Score: 382.90704
- Similarity Product: 296.51606655833245

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

Dataset: test