变压器增强的自动编码器染清洁噪音的光学连贯断层扫描图像图像
Hanya Ahmed1, Qianni Zhang1, Robert Donnan2
1Queen Mary University of London, School of Electronic Engineering and Computer Science, London, United Kingdom.
Journal of medical imaging (Bellingham, Wash.)
|May 2, 2024
概括
一个新的深度学习框架 - - 变压器增强自动编码器染 (TEAR) - - 有效地消除光学连贯断层扫描 (OCT) 图像中的噪声. 这种先进的无色化方法显著提高了图像质量,以便更好地进行医学诊断.
科学领域:
- 医疗成像医学成像
- 人工智能的人工智能
背景情况:
- 光学一致性断层扫描 (OCT) 在医学成像中至关重要,特别是在眼科中.
- 在OCT扫描中的图像噪声阻碍了准确的诊断和详细的分析.
研究的目的:
- 引入一种新的深度学习框架,用于反驳海外国家和地区的图像.
- 提高OCT扫描的视觉质量和诊断效用.
主要方法:
- 一个基于区域的,深度学习的denoising框架,使用一种名为Transformer Enhanced Autoencoder Rendering (TEAR) 的混合模型.
- 在TEAR内部实施注意门,以专注于前景消除和背景删除.
- 在OCT图像中常见的各种噪音工件的自适应清洁.
主要成果:
- 在牙科和视网膜OCT数据集中,TEAR显示了关键性能指标的显著改善.
- 在牙科数据中达到27.9dB的峰值信号噪声比 (PSNR) 和0.9的SSIM.
- 对于视网膜数据,指标包括PSNR的24.6dB和SSIM的0.64.
结论:
- 拟议的TEAR框架有效地消除了OCT图像中的斑点噪声.
- 在图像质量提升方面,TEAR的表现优于传统和现有的深度学习无声化算法.
相关概念视频
Transformers with Off-Nominal Turns Ratios
151
In scenarios involving parallel transformers with disparate ratings, developing per-unit models requires accommodating off-nominal turns ratios. This situation arises when the selected base voltages are not proportional to the transformer’s voltage ratings. Consider a transformer where the rated voltages are related by the term a. If the chosen voltage bases satisfy a relationship involving term b, term c is defined as the ratio of these bases. This ratio is then substituted into the...
151
Energy Losses in Transformers
864
In an ideal transformer, it is assumed that there are no energy losses, and, hence, all the power at the primary winding is transferred to the secondary winding. However, in reality, the transformers always have some energy losses, and, hence, the output power obtained at the secondary winding is less than the input power at the primary winding due to energy losses.
There are four main reasons for energy losses in transformers.
The first cause can be the high resistance of the...
There are four main reasons for energy losses in transformers.
The first cause can be the high resistance of the...
864
Types Of Transformers
971
Transformers can provide desired voltages to a circuit by modifying the number of turns in the secondary windings.
If the ratio of the number of turns in the secondary winding to that of the primary winding is greater than one, then the transformer is said to be a step-up transformer. In a step-up transformer, the voltage at the secondary winding is greater than the voltage applied at the primary winding.
However, if this ratio is less than one, the transformer is said to be a step-down...
If the ratio of the number of turns in the secondary winding to that of the primary winding is greater than one, then the transformer is said to be a step-up transformer. In a step-up transformer, the voltage at the secondary winding is greater than the voltage applied at the primary winding.
However, if this ratio is less than one, the transformer is said to be a step-down...
971
Reconstruction of Signal using Interpolation
194
Signal processing techniques are essential for accurately converting continuous signals to digital formats and vice versa. When a continuous signal is sampled with a period T, the resulting sampled signal exhibits replicas of the original spectrum in the frequency domain, spaced at intervals equal to the sampling frequency. To handle this sampled signal, a zero-order hold method can be applied, which creates a piecewise constant signal by retaining each sample's value until the next...
194


