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 1):
In a video encoder, a method to reshape chroma components of a high dynamic range image, the method comprising:\n receiving an input high dynamic range image comprising pixels, wherein each pixel is coded in the IC T C P  color format and comprises a luma component, a first chroma component C T  and a second chroma component C P ; and for a pixel in the input high dynamic range image:\n generating a first scaler as a function of the luma component of the pixel, by applying, to the luma component of the pixel, a function that generates values of the first scaler which are larger for a mid-range of luma values than for other luma values; \n generating the colour saturation of the pixel as a function of the first and second chroma components according to the function Sat=\u221a{square root over (C T 2 +C P 2 )}, \n generating a second scaler as a piecewise, monotonically decreasing function of the colour saturation of the pixel; and \n generating, as first and second reshaped chroma components for the pixel, i) the multiplicative product of the first chroma component, the first scaler and the second scaler and ii) the multiplicative product of the second chroma component, the first scaler and the second 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): 0.4820214772643342
- 35 USC 102 Novelty (BERT): 0.5423194977562986
- Combined Prediction Score: 0.4880512793135306
- Mean Citation Score: 326.643908
- Max Citation Score: 382.90704
- Similarity Product: 291.56084264099115

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