The general theories of gray correction methods for the medical ultrasonic image are introduced in this paper, including gray level correction, gray level transformation and histogram correction.
介绍了超声医学图像灰度校正常用方法的基本原理，这些方法主要有灰度级校正、灰度变换及直方图修正。
Based on the feature of plate rolling process, pass correction based on gray relational grade is put into forward.
基于中厚板的轧制特点，提出了基于灰色关联度的道次修正算法。
Based on the gray system theory, the paper suggests a kind of gray modeling method with incomplete-quotient distinguished correction, which is characterized by high accuracy and simple algorithm.
本文基于灰色系统理论，提出一种残商辨识修正的灰色建模方法，这种方法精度高、算法简单。
The series of dynamic measuring errors of the predicting correction of real-time errors of gray model is also a random process and has these four basic characteristics.
灰色模型实时误差预报修正的动态测量误差序列同样为随机过程，也具有上述基本特性。
Image distortion correction includes spatial correction and gray-level correction.
图像畸变校正包括空间位置校正和灰度校正。
The hardware system is based on the dot-array plate arithmetic, fitting the correlation between ideal image and real image, and achieving the correction for location and gray-level of image pixels.
系统采用基于点阵样板的校正方法，拟合理想像与实际像的关系，完成像素点的几何位置校正和灰度校正；
The use of image denoising, gray-scale transformation, histogram equalization, and uneven background correction techniques make the image more easily processed and analyzed.
采用图像去噪、灰度变换、直方图均衡化以及非均匀背景修正技术等提高了原始图像成分的清晰度，使图像变得更便于计算机分析和处理。
According to the need of business card OCR system, this paper presents a new skew detection and correction method based on black border of gray business card image.
本文针对名片ocr系统的要求，提出了一种新的根据图像扫描时产生的黑色边缘来检测灰度名片图像倾斜角度的方法。
Secondly, in order to improve the correction of image matching, the effect of different gray levels on mutual information is discussed later.
其次，为了提高互信息匹配的正确率，研究了分灰度阶估算的方法，并探讨这种方法对互信息匹配造成的各种影响。
Secondly, in order to improve the correction of image matching, the effect of different gray levels on mutual information is discussed later.
其次，为了提高互信息匹配的正确率，研究了分灰度阶估算的方法，并探讨这种方法对互信息匹配造成的各种影响。
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