Phase Difference Data Compression for Unwrapping Accuracy
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Solution Overview
Problem
Existing phase difference unwrapping processing is vulnerable to noise components and local losses, making it difficult to achieve accurate results, especially when dealing with phase differences in the range of −π to +π.
Innovation Solution
A processing apparatus and method that compresses positional information from phase difference data and removes noise components through compression and noise removal units, followed by interpolation and unwrapping processing to improve accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional unwrapping processing is performed on phase difference data, then the processing can be completed, but the accuracy deteriorates due to vulnerability to noise components and local losses
Solution Approach 1:
The patent applies preliminary action by performing compression processing on phase difference data before unwrapping processing. The compression unit compresses the phase difference data to reduce its dimensionality or complexity, creating a simplified representation that is then processed by the unwrapping unit. This preliminary compression step prepares the data in a form that is more robust to noise and local losses, thereby improving unwrapping accuracy without requiring changes to the fundamental unwrapping algorithm.
2Productivity
If phase difference data is processed without compression, then all original information is preserved, but processing time and computational complexity increase
Solution Approach 1:
The patent applies parameter changes by transforming the phase difference data through compression that alters its representation parameters. The compression unit changes the data structure or dimensionality while preserving the essential phase information needed for unwrapping. This parameter transformation reduces computational complexity and processing time while maintaining the critical information required for accurate unwrapping, effectively balancing productivity improvement with information preservation.
Data Source
AI summary
A processing apparatus includes a compression unit configured to compress data by compressing at least positional information with respect to phase difference data including the positional information, and a removal unit configured to remove a noise component with respect to the data compressed by the compression unit.