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1)  variant gray scale histogram
变异灰度直方图
1.
The paper presents a variant gray scale histogram (VGH) for the purpose of detecting and locating captions in video images.
为实现视频图像中字幕的快速检测与定位 ,本文提出一种变异灰度直方图VGH 。
2)  distribution difference of histogram gradation
直方图灰度分布差异
1.
By extraction of characteristic values,like the length of orthogonal long and minor axis of the watermelon seeds,the proportion between the length and width,the area,the degree of connecting superficial pattern,the coverage degree of black region and the distribution difference of histogram gradation and screening the watermelon seeds,by compared with the sta.
系统提取西瓜子正交长短轴长度、面积、表面花纹连通度、黑色区域覆盖度、直方图灰度分布差异等特征值,通过标准信息库比对及硬件分捡设备,最终选出合格瓜子。
3)  gradation histogram
灰度直方图
1.
By using the image processing function and programming tomography,the following functions are realized: the contour line,edge line and gradation histogram of medical images are displayed;the selected regions of medical images are freely zoomed;the gray level of discretional regions is displayed using medical image processing tool and the distance of the given points is freely measured.
0图像处理函数和编程技巧,可展示医学图像的轮廓线、内部组织的边缘线和灰度直方图,对图像选定区域进行自由放大和缩小,利用图像处理工具显示任意区域的灰度值,并能自如测量两点间的距离,可以对图像分割技术中的不同方式进行灵活对比,为临床诊断提供有用的参考。
4)  gray level histogram
灰度直方图
1.
This paper simulates the image s gray level histogram with a series of Gaussian functions, and calculates the optimal thresholds between different neighboring Gaussian functions, and then separates the needed area from the whole image.
以图像分割为基础,采用自适应旋转投影分解法,用一组高斯函数来拟合图像的灰度直方图,计算出相邻高斯函数间的最优阈值,从而将待计算部分从图像中分割出来;采用数字图像分割方法,便于计算各种复杂形状的面积。
2.
In this paper, adaptive oriented orthogonal projective decomposition is used to decompose the gray level histogram of image with complex background into the combination of several Gauss density functions.
文中使用了自适应定向正交投影分解算法将复杂图像的直方图分解为多个高斯分布的组合,进而将灰度区间划分为多个子区间并计算出灰度直方图在这些子区间上的面积,而目标在图像中的成像面积是可以预先作出估计的,从而利用两者之间的关系给出分割图像的阈值,实现对图像的分割。
3.
The threshold methods of image segmentation are surveyed in this article, especially those based on the gray level histogram.
本文对现有的各种图像阈值分割方法进行综述,重点介绍了基于图像灰度直方图的阈值分割方法。
5)  gray histogram
灰度直方图
1.
Extraction and analysis of mineral information in gray histogram of sinter ore mineragraphy;
烧结矿矿相灰度直方图中矿物信息的提取与分析
2.
Superposition principle of gray histograms in video analysis
视频分析中灰度直方图的叠加原理研究
3.
Methods : The gray histogram of the image was drawn,and then the threshold was found.
方法首先绘出要分割图像的灰度直方图;根据直方图选出适当的阈值;最后利用所选定的阈值对图像进行分割。
6)  histogram [英]['hɪstəɡræm]  [美]['hɪstə'græm]
灰度直方图
1.
We proposed improved method based on neighborhood relativity for histogram-based algorithm,this method improves quality of colorizing pictures without reducing the speed.
基于灰度直方图的Hist算法上色速度非常快,作者提出基于邻域相关性的改进方法,使得该算法在保证上色速度的前提下提高了上色质量。
2.
A fast running algorithm based on the local window histogram was employed to implement approximate vector median filtering for multichannel image processing.
针对向量中值滤波的瓶颈问题,应用灰度直方图求近似向量中值,并从理论上证明了若符合连通条件,所求中值即为向量中值。
补充资料:直方图
分子式:
CAS号:

性质:是一种直观地表示数据统计分布特性的图示方法。将一组依数值大小顺序排列的测量数据,按一定组距细分为若干组,以出现在各分组的频数和频率为纵坐标,以分组的组界值为横坐标画成的矩形分布图,便是频数和频率直方图。直方图各矩形的频数之和等于测量值的总数,直方图各矩形的频率之和等于l。用直线连接频数和频率直方图各矩形上方的中点得到的曲线,相应得到频数和频率曲线。当测量值的数目足够的多,分组的组距非常小,频数和频率曲线变成平滑的曲线,所得到的平滑曲线,相应称为频数分布曲线和频率分布曲线。

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