通过对显示器稳定性的测量,为在对比度敏感测量和色貌模型、图像质量、图像感知模型评价等研究领域中用显示器进行实验研究奠定了基础。
Based on the measurement of stability, it makes a good foundation for experimental research measuring contrast sensitivity and estimating color appearance, image quality and image perception on CRT.
采取正交实验手段,全面分析了噪声、条纹对比度和密度对条纹方向及间距测量精度的影响。
By means of orthogonal experiment, the effects of noise, visibility and fringe density on the measuring accuracy of fringe direction and space are analysed in detail.
测量断面的平均计数、噪声、冷区对比度及剖面曲线。
The mean counts, noise, contrast and profile curves of the slices were measured.
其中与光学特性测量有关的项目有:发光亮度、角度相关亮度均匀性、角度相关对比度、灰阶色度线性等。
Optical characteristics-related measurement projects in it include: shining luminance, angle-related luminance uniformity, angle-related contrast ratio, gray scale curve, etc.
原始的电子散斑干涉条纹图中含有很强的颗粒性噪声,对比度很差,因此去除噪声是电子散斑干涉测量技术的关键问题。
Traditional speckle fringe patterns by electronic speckle pattern interferometry (ESPI) are inherently noisy and of limited visibility, so denoising is the key problem in ESPI.
测量并记录2个密度区内感兴趣区像素值均值和噪声值,计算对比度噪声比。
The pixel mean value and noise of the image in region of interest were measured and recorded in 2 density areas, and the CNR was calculated.
测量并记录2个密度区内感兴趣区像素值均值和噪声值,计算对比度噪声比。
The pixel mean value and noise of the image in region of interest were measured and recorded in 2 density areas, and the CNR was calculated.
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