PATENT CLAIM ANALYSIS

Application Number: 15779370
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-09
Patent Classification: ["375", "240020"]

Abstract:
The invention relates to a method for encoding high dynamic range images, both static images and video frames. The method comprises the steps of: a) acquiring a high dynamic range image in floating point format; b) calculating the dynamic range of the acquired image; c) calculating the image average luminance; d) calculating a parameter dynamic_range by adding to or subtracting from the dynamic range value calculated at step b) a predetermined value, the addition or subtraction of such predetermined value depending on image average luminance calculated at step c); e) multiplying the values of the pixels of the acquired image by a factor equal to 2−dynamic_range; f) raising to a power equal to 1.0/(2.2+add_gamma) the values of the pixels calculated at step e), where add_gamma is a value higher than or equal to zero; g) reducing the number of bits used for encoding the image pixels such to convert the image in a format with a dynamic range lower than that of the acquired image; h) compressing the lower dynamic range image. The invention relates also to a corresponding image decoding method and to devices for encoding and decoding images and videos.

Claim (Index 18):
Method according to  claim 1 ,\n wherein the image to be encoded is a current frame of a video signal, wherein said video signal comprises said current frame and a previous frame that has to be displayed immediately before said current frame, wherein step d) is implemented for the current frame if the dynamic range calculated at step b) fall outside the range of values ranging from dynamic_range_prev\u2212add_range to dynamic_range_prev+add_range, where dynamic_range_prev is the dynamic range of the previous frame, wherein the value of the parameter dynamic_range calculated for the previous frame is used if the dynamic range calculated at step b) falls within the range of values ranging from dynamic_range_prev\u2212add_range to dynamic_range_prev+add_range; and wherein the parameter add_gamma is provided by a user to a device performing the method.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 93.0
- Lexical Diversity: 2.41758
- Patent Class: 375.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15306873', '12160738', '14414153', '13961266', '14903630']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4689295936901768
- 35 USC 102 Novelty (BERT): 0.5077085970603139
- Combined Prediction Score: 0.4728074940271905
- Mean Citation Score: 232.064494
- Max Citation Score: 243.225
- Similarity Product: 170.04964874088762

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