Ultrasonic Diagnosis Device Edge Sharpness via Wavelet Compensation
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Solution Overview
Problem
When synthesizing multiple frames in ultrasonic diagnosis, the image edges tend to become blurred due to smoothing, leading to a lack of sharpness in the representation of object boundaries.
Innovation Solution
An ultrasonic diagnosis device that generates an output frame by synthesizing a base frame and a compensation frame, where the compensation frame emphasizes edge components through wavelet transform and weighted averaging, allowing for adjustable smoothing and sharpening effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple frames are synthesized to improve image quality and S/N ratio, then the image quality is improved, but the edge portions become blurred and lose sharpness
Solution Approach 1:
The patent segments the image processing into two distinct components: a base frame generated by synthesizing multiple frames for improved S/N ratio and smoothing, and a compensation frame that specifically targets edge portions to restore sharpness. This segmentation allows each component to optimize for its specific function without compromising the other.
Solution Approach 2:
The patent applies local quality by generating a compensation frame that specifically enhances edge portions rather than uniformly processing the entire image. The compensation frame is designed to add sharpness selectively to edge areas while preserving the smoothing effects in non-edge regions, thereby achieving localized improvement in edge sharpness without sacrificing overall image quality.
2Reliability
If smoothing is applied to synthesize multiple frames, then the S/N ratio is improved, but the edge portions become blurred
Solution Approach 1:
The patent separates the smoothing function (performed on the base frame to improve S/N ratio) from the sharpening function (performed on the compensation frame to restore edge sharpness). This segmentation enables the system to achieve both low noise and sharp edges by combining the two processed frames.
Solution Approach 2:
The patent creates a composite image by synthesizing the base frame and compensation frame together. The base frame provides the smoothed, low-noise background while the compensation frame contributes the sharp edge information. The final output frame is a composite that combines the beneficial properties of both frames.
Data Source
AI summary
A basic image generation unit generates a base frame by synthesizing a reception frame sequence obtained by transmission/reception of ultrasonic waves, and an edge-enhanced image generation unit generates a compensation frame where an edge component of an object is emphasized based on the reception frame sequence. A synthesis unit generates an output frame by synthesizing the base frame and the compensation frame.