Pixel Row Deviation Correction in Reciprocation Scan Imaging
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Solution Overview
Problem
Conventional techniques for generating images from pixel value information obtained through reciprocation scans fail to correct deviations in adjacency relationships between pixel value information items within pixel rows, leading to inaccuracies in image output.
Innovation Solution
An apparatus and method that acquire pixel value information, calculate differences between chronological and reverse-chronological pixel values, and generate correction information to ensure accurate adjacency relationships between pixel values, thereby correcting deviations in pixel rows during the reciprocation scan process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pixel value information items are acquired through reciprocation scan and assigned in chronological order, then the processing is simple and fast, but deviations in adjacency relationships between pixel values occur leading to image inaccuracies
Solution Approach 1:
The patent applies preliminary action by calculating correction values before final image generation. The processor computes correction values based on differences between chronological and reverse-chronological pixel values, then applies these corrections in advance to ensure accurate adjacency relationships in the output image without compromising processing efficiency
Solution Approach 2:
The patent replaces the simple chronological assignment mechanism with a computational correction mechanism. Instead of directly using chronological pixel values, the system substitutes them with corrected values derived from mathematical operations (calculating differences and applying corrections), thereby eliminating adjacency deviations while maintaining processing speed
2Manufacturing precision
If correction calculations are performed for multiple different arrangement orders, then image accuracy is improved, but the computational complexity increases
Solution Approach 1:
The patent applies local quality by focusing correction calculations on specific critical parameters rather than performing exhaustive corrections for all possible arrangement orders. The system calculates corrections based on local differences between chronological and reverse-chronological pixel values at corresponding positions, applying corrections only where adjacency deviations occur in the pixel rows
Solution Approach 2:
The patent uses copying by creating a reverse-chronological copy of the pixel value sequence and comparing it with the chronological sequence. This copied sequence serves as a reference for calculating correction values, allowing the system to identify and correct adjacency deviations without complex multi-order arrangement calculations
Data Source
AI summary
An apparatus executes an acquisition process for acquiring pixel value information items from a sensor that outputs the pixel value information items obtained at multiple sampling angles by executing a reciprocation scan with a measurement wave in a scan direction; executes a calculation process for calculating, based on the pixel value information items for one reciprocating motion in the reciprocation scan for each of multiple different arrangement orders in which a chronological pixel value information item on a forward path and a reverse-chronological pixel value information item on a backward path are alternately assigned, differences between the chronological pixel value information item and the reverse-chronological pixel value information item which are adjacent to each other in an arrangement direction; and executes a generation process for generating, based on the differences, a correction information item related to the pixel value information items for the one reciprocating motion in the reciprocation scan.