PATENT CLAIM ANALYSIS

Application Number: 15749231
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["375", "240030"]

Abstract:
In a method to improve backwards compatibility when decoding high-dynamic range images coded in a wide color gamut (WCG) space which may not be compatible with legacy color spaces, hue and/or saturation values of images in an image database are computed for both a legacy color space (say, YCbCr-gamma) and a preferred WCG color space (say, IPT-PQ). Based on a cost function, a reshaped color space is computed so that the distance between the hue values in the legacy color space and rotated hue values in the preferred color space is minimized HDR images are coded in the reshaped color space. Legacy devices can still decode standard dynamic range images assuming they are coded in the legacy color space, while updated devices can use color reshaping information to decode HDR images in the preferred color space at full dynamic range.

Claim (Index 16):
In a decoder, a method to reconstruct an input image coded in a reshaped color space, the method comprising:\n receiving a coded input image ( 312 ) in a reshaped color space, wherein the reshaped color space is generated by rotating chroma components of a preferred color space to approximate one or more parameters of a legacy color space; accessing metadata ( 309 ) transmitted from an encoder to the decoder, wherein the metadata are associated with the coded input image and comprise:\n a flag indicating the presence or not of a color-rotation and scaling matrix; and \n a plurality of coefficients for the color-rotation and scaling matrix when the flag indicates the presence of the color-rotation and scaling matrix; \n decoding ( 315 ) the coded input image to generate a decoded image in the reshaped color space; and generating a decoded image in the preferred color space based on the decoded image in the reshaped color space and the color-rotation and scaling matrix.

Metadata:
- Claim Count in Document: 22.0
- Percentile: 86.0
- Lexical Diversity: 1.97436
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15564185', '16087241', '15513928', '14767249', '15745647']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.53969556791844
- 35 USC 102 Novelty (BERT): 0.53729075923419
- Combined Prediction Score: 0.539455087050015
- Mean Citation Score: 343.418008
- Max Citation Score: 391.07782
- Similarity Product: 290.478524378767

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