linear gray level transformation 线性灰度变换
dynamic linear gray-level transformation 动态线性灰度变换
piecewise linear gray level transformation 分段线性灰度变换
The main features of the system are piecewise linear gray level transformation, slope angle adjustment, mapping and normalization, feature distilling.
本系统主要特征是分段线性灰度变换、斜度调整、射归一、征提取。
The attenuation of X-ray through the object is non-linear and the gray level of image is non-linear response of object thickness.
射线穿过物体的衰减是非线性的，经过影像系统得到的图像灰度与物体厚度是非线性的关系；
This paper presents an algorithm of acquiring depth map using linear approximation based on gray level information. Using the algorithm, surface reconstruction can be easily realized.
该文提出了一种用线性逼近方法、基于灰度信息从图像获取物体深度信息，从而实现物体三维表面重建的算法。
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