...灰度变换，图象处理系统，地理信息系统. [gap=4869]Key words multisource image, look_up_table, histogram, gray transformation, image processing system, geographic information system.
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linear gray transformation 灰度线性变换
Gray-scale transformation 灰度变换 ; 在点运算中的一种函数 ; 灰度变换函数 ; 图像的灰度变换
Gray Level Transformation 灰度电平变换
Gray-scale transformation harmonic signal 灰度变换
Gray code transformation Gray码变换
gray linear transformation 灰度线性变换
·2,447,543篇论文数据，部分数据来源于NoteExpress
The methods of image processing included gray transformation, threshold segmentation, logic calculation, spatial filter and so on. They were all analyzed in great detail.
论文对所用到的图像预处理的方法都进行了详细的分析，并给出了它们的算法框图或部分源代码，也对比了各种方法处理前后的效果。
This paper mainly tells us the ways of image gray transformation, including linear gray transformation, nonlinear gray transformation and the approach of histogram equalization.
此文主要研究用于增强图像的灰度变换方法，包括线性灰度变换、非线性灰度变换与直方图均衡化方法。
After the gray transformation and the histogram equalization, these images were filtered by a frequency-domain homomorphic filter, hence noises in the images were greatly reduced.
利用自开发软件，对图像进行灰度变换和直方图均衡化处理后，采用频域同态滤波的方法对图像进行降噪滤波处理。
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