Pixel Data Interpolation for Radar Image Omission
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Solution Overview
Problem
Radar apparatuses face issues with pixel omission and interpolation in displaying radar images, particularly due to the radial distribution of information from the transmitting source, leading to gaps and distortions in the display, especially at greater distances from the center, which existing methods struggle to accurately detect and interpolate without causing visual discomfort.
Innovation Solution
A pixel data generating device that converts echo signals into XY rectangular coordinates and uses an interpolation module to generate pixel data between sweep lines in parallel directions (X-axis or Y-axis), ensuring no pixel omissions by considering the circumferential direction, thereby maintaining image smoothness and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If pixel data is simply displayed on the display module based on radial sweep lines, then the display process is simple, but pixel omissions occur in portions distant from the center position causing spoiled appearance
Solution Approach 1:
The patent applies preliminary action by detecting pixel omissions before final display and performing interpolation processing to generate missing pixel data in advance. The pixel omission detecting module identifies gaps in the radial sweep line data, and the interpolating module pre-generates interpolation pixel data based on adjacent pixels, ensuring complete pixel coverage before the display process occurs.
2Manufacturing precision
If interpolation is performed to fill pixel omissions, then pixel coverage improves, but the complexity of the processing system increases
Solution Approach 1:
The patent segments the image processing into distinct functional modules: a pixel omission detecting module that identifies gaps, an interpolating module that generates missing pixel data, and a display module that outputs the final image. This segmentation allows each module to perform its specific function independently, making the overall complex process manageable and maintainable through modular design.
3Measurement precision
If existing pixel omission detection methods are used, then some pixel omissions are detected, but continuous pixel omissions in the rotating direction cannot be detected
Solution Approach 1:
The patent changes the detection dimension by examining pixel continuity not only along the radial sweep direction but also in the circumferential rotating direction. By checking whether pixels exist continuously in both dimensions, the method can detect continuous pixel omissions that occur in the rotating direction, which single-dimensional detection methods miss.
4Manufacturing precision
If the number of pixels in display module is increased for precise image expression, then image precision improves, but unexpected pixel omissions occur that were not present in conventional displays
Solution Approach 1:
The patent applies beforehand cushioning by implementing a proactive pixel omission detection and interpolation system that prevents pixel gaps from appearing in the final display. The system continuously monitors for potential omissions in high-resolution displays and pre-generates interpolation pixel data to cushion against the occurrence of unexpected pixel omissions that arise due to the increased pixel density.
Data Source
AI summary
The disclosed device generates a plurality of pixel data in an XY coordinate system. The pixel data includes first pixel data generated on a first sweep line, according to a distance from a transmitting source, based on an echo of a detection signal from the source toward a first direction, and second pixel data generated on a second sweep line, according to a distance from the source, based on an echo of a detection signal from the source toward a second direction different from the first direction. The device includes a module for converting the first and second pixel data into data in the XY coordinate system, a module for generating pixel data of an interpolation target pixel located between a first pixel as an observing pixel on an interpolation axis parallel to X-axis or Y-axis and a second pixel as a corresponding pixel on the same interpolation axis, based on the pixel data on the first and second sweep lines.