Video Encoding with Predicted Sample Range Flags
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Solution Overview
Problem
Current video data encoding and decoding systems face inefficiencies in compressing and decompressing video data, particularly in accurately predicting and encoding sample range flags, which affects data compression ratios and quality.
Innovation Solution
The system includes a data encoder and decoder that derive and encode sample range flags, using a predictor to forecast the state of these flags and a comparator to verify the prediction, allowing for reduced encoding of indicator flags when the predicted state matches the actual state, thereby optimizing the encoding process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If all sample range flags are encoded to ensure accurate representation of sample values, then measurement precision is improved, but device complexity and data stream volume increase
Solution Approach 1:
The patent extracts only the essential information from sample range flags by using indicator flags that signal whether predicted flags differ from actual flags. Instead of encoding all sample range flags, the system extracts and transmits only the differences, reducing data stream volume while maintaining necessary precision for reconstruction.
Solution Approach 2:
The patent applies preliminary action by using a predictor to forecast the state of sample range flags before encoding. This prediction step is performed in advance, allowing the encoder to determine which flags need to be explicitly transmitted and which can be inferred, thereby reducing the number of flags that need to be encoded in the data stream.
2Quantity of substance
If a predictor is used to forecast sample range flags to reduce encoding data, then data compression ratio is improved, but manufacturing precision of the prediction system increases
Solution Approach 1:
The patent applies partial action by using indicator flags to signal only when prediction errors occur, rather than encoding all sample range flags. This partial encoding approach achieves compression by transmitting minimal correction information only when necessary, balancing compression ratio with prediction accuracy requirements.
Solution Approach 2:
The patent implements feedback through indicator flags that provide correction information when predictions are inaccurate. The decoder uses these indicator flags to identify and correct prediction errors, ensuring that the reconstructed sample range flags match the original values even when prediction is not perfectly accurate.
3Productivity
If fewer indicator flags are encoded instead of all sample range flags, then productivity is improved, but measurement precision of sample values may deteriorate
Solution Approach 1:
The patent extracts only the critical correction information needed to maintain precision, using indicator flags to signal when predicted values differ from actual values. This extraction approach maintains measurement precision by ensuring that all necessary correction information is transmitted, while improving productivity by eliminating redundant flag encodings.
Solution Approach 2:
The patent replaces the mechanical system of encoding all sample range flags with a more efficient indicator flag system. Instead of transmitting every flag value, the system substitutes a compact indicator mechanism that signals when corrections are needed, thereby improving encoding productivity while maintaining the precision required for accurate reconstruction through the predictor-corrector approach.
Data Source
AI summary
Apparatus comprises a data encoder configured to derive, from an array of sample values, sample range flags each indicative of whether one or more sample values of the array of sample values lie in a predetermined range of sample values, the data encoder being configured in a first encoding mode to encode the array of sample values, at least in part, by encoding the sample range flags to an output data stream; a predictor configured to predict the state of a group of the sample range flags for a given array of sample values, the group being at least a subset of the sample range flags; and a comparator configured to compare the predicted state of the group of sample range flags with the actual state of the respective sample range flags for the given array of sample values; the data encoder being configured, in response to the comparator, to encode the given array of samples values in a second encoding mode in which the encoder is configured to encode to the output data stream a predetermined number of indicator flags, fewer than the group of sample range flags, to indicate whether the predicted state of the group of sample range flags is the same as the actual state of the group of sample range flags for the given array of sample values.