Effect of noise correlation on detectability of disk signals in medical imaging.
Effect of noise correlation on detectability of disk signals in medical imaging.
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DOI：
10.1364/josaa.2.001752
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发表时间：
1985-10
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影响因子：
--
通讯作者：
K. Myers;H. Barrett;M. Borgstrom;D. Patton;G. Seeley
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文献类型：
--
作者：
K. Myers;H. Barrett;M. Borgstrom;D. Patton;G. Seeley
像素信噪比是一种公认的图像质量衡量标准，用于预测医学成像中观察者的表现。然而，我们发现，对于简单的检测实验，具有相同像素信噪比 (SNRp) 但不同相关属性的图像给出了截然不同的观察者性能测量。具有预白化噪声能力的理想检测器输出的 SNR 也不能很好地预测高通噪声中磁盘信号的人类表现。我们发现，相对于用于此任务的非预白化检测器的性能，人类的观察者效率恒定。
Pixel signal-to-noise ratio is one accepted measure of image quality for predicting observer performance in medical imaging. We have found, however, that images with equal pixel signal-to-noise ratio (SNRp) but different correlation properties give quite different observer-performance measures for a simple detection experiment. The SNR at the output of an ideal detector with the ability to prewhiten the noise is also a poor predictor of human performance for disk signals in high-pass noise. We have found constant observer efficiencies for humans relative to the performance of a nonprewhitening detector for this task.