查询词典 hough

And a screwy algorithm based on digital image from mono-view is presented. This algorithm needs the four-region sign with the screwy boundary labeled on the surface of columniform targets. Then the length of the intersecting lines of the object's axis and the screwy boundary are gained by means of digital image processing, such as gray histogram balancing, Susan edge detection and Hough transform. Finally, the object's rolling angle is accurately gotten in shooting range.

该方法通过在圆柱形目标表面涂上边界为螺旋线的四区域标志，综合运用直方图均衡化、Susan边缘检测以及Hough变换等数字图像处理技术，从光测图像中得到各个时刻目标中轴线与螺旋线的相交线段的长度，由此可高精度测出空间目标的滚转角，从而有效地解决了靶场试验中空间目标滚转角的测量难题。

Because of the high magnification camera, we have to extract the laser streak from the obtained images fist, then we can get the line position of laser streak by using Otsu's method , morphology, skeletonization and Hough transform from the images of inspecting object. The system shows a good performance of getting only 5% error to the reconstructed surface of the standard board.

本系统采用放大倍率较大的镜头，因此在取像之后，必须先做雷射条纹形状的萃取，再运用Otsu演算法做二值化运算，搭配型态学影像处理，骨架化与Hough转换，计算雷射线的相隔距离，再透过前述的公式转换待测物体的厚度值。

Unlike Hough Transform based algorithm, this method expends low costs in computation time and storage space.

与Hough变换方法相比，该算法不需要大量的计算时间和存储空间。

Usually Hough transform was used to detect lines, circles, ellipses, and hyperbolas in an image.

Hough transform 通常用来侦测影像中的直线、圆、椭圆、和双曲线。

This paper introduced a method of recognizing the partially occluded eggplant based on generalized Hough transform in three-dimensional space.

介绍了一种基于广义Hough变换的空间有部分遮挡的茄子目标识别方法。

Since it was difficult to use machine vision for crop rows orientating, a method based on Hough transformation was developed in this paper.

针对机器视觉对作物行定位困难问题，给出一种基于Hough变换的作物行视觉定位方法。

This paper presents an etTicient pipelined implementation of the Multiresolution Hough transform on a pyramid machine.

本文提出了一种有效的多分辨率Hough变换在金字塔机器中的流水线实现。

A new algorithm was proposed for triangles detection based on windowed Hough transform.

提出了一种基于加窗Hough变化的任意三角形检测方法。

Because its principle is simple and easy, the Least Square Fitting is often used in present fields; but it is often interfered by personal reasons. An approach with Hough transform to calculate attitude of tilt fracture and bed plane is another one, which is insensitive to disturbance, but the computational quantity is quite large.

最小二乘拟合法是目前现场主要采用的方法，它的原理简单，容易实现，但是容易受到人为因素的影响；Hough变换方法具有一定的抗干扰能力，但是计算量大。

First of all two-dimensional bar code of the positioning and segmentation algorithm using Hough Transform and Sobel edge detection of the bar code images collected from the original image to effectively separate and then analyzes the barcode image through the optical system of the noise model, put forward a Calculation of point spread function of standard deviation of the algorithm uses Flourier transform adaptively select the threshold to remove noise caused by invalid border, bar code and thus be the basic module.

首先探讨了二维条码的定位与分割算法，利用Hough变换与Sobel边缘检测把条码图像从原始采集的图像中有效地分割出来然后分析了条码图像经过光学系统的噪声模型，提出了一种计算点扩展函数标准方差的算法采用Flourier变换自适应地选取阈值去除噪声导致的无效边界，从而得到条码的基本模块。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。