PATENT CLAIM ANALYSIS

Application Number: 15762393
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-09
Patent Classification: ["375", "240030"]

Abstract:
A QP offset value is calculated for a chroma component of a pixel in a picture of a video sequence based on a reference QP value and a factor that depends on a difference between a capture color space for the pixel and an encoded color space for the pixel. A QP value is then calculated for the chroma component based on the reference QP value reduced by the QP off-set value. The calculation of QP values for chroma components based on the factor that depends on the difference between capture and encoded color spaces improves the chroma quality in an efficient way in particular for HDR and WCG video.

Claim (Index 28):
A decoder for decoding an encoded video sequence comprising a plurality of pictures, wherein each picture comprises a plurality of pixels and each pixel is associated with a luma component value and two subsampled chroma component values, wherein\n said decoder is configured to decode said encoded video sequence to obtain quantized transform coefficients and a quantization parameter (QP) offset value for a chroma component of a pixel, said QP offset value depends on a reference QP value and a factor that depends on a difference between a capture color space for said pixel and an encoded color space for said pixel; said decoder is configured to dequantize said quantized transform coefficients using a QP value determined based on said reference QP value reduced by said QP offset value to obtain transform coefficients; said decoder is configured to inverse transform said transform coefficients to obtain a residual; and said decoder is configured to calculate a reconstructed subsampled chroma component value based on said residual and a predicted chroma component value.

Metadata:
- Claim Count in Document: 23.0
- Percentile: 90.0
- Lexical Diversity: 2.35417
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14891821', '15426689', '15505509', '15202933', '14729486']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5324912133153603
- 35 USC 102 Novelty (BERT): 0.5170354856210723
- Combined Prediction Score: 0.5309456405459315
- Mean Citation Score: 308.141544
- Max Citation Score: 335.37326
- Similarity Product: 292.34048923282626

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