边缘检测

According to block the internal activity of the image block is divided into a flat block and texture block 2 categories, the use of airspace based on the variance detection methods to detect the flat block, and a flat block adjacent block edge adaptive smoothing.

根据块的内部活动性将图像块分成平坦块和纹理块2 类，利用基于方差的空域检测方法检测出平坦块，并对平坦块进行邻块边缘自适应平滑。

Automatic measuring the size of tumour in MRI images is very important, the key technique is edge detection of the tumour.

肿瘤大小的自动检测十分重要，其中的关键技术是检测出肿瘤部位的封闭边缘。

This procedure is Canny algorithm testing procedures, can be the edge of some objects for testing.

详细说明：此程序是CANNY算法检测的程序，可以对一些物体的边缘进行检测。

First, a gradient detecter is used for detecting all localintensity discontinuous points as candidate edge points. Then,all thesecandidate edge points are classified into three kinds of point setsaccording to some classifying rules.

首先，利用梯度检测算子检测出灰度不连续象点作为候选边缘点，其次，按文中提出的若干分类规则，将这些候选点分为三类。

The detection method introduced in this paper is as follows: using some difference operator, calculating the gradient variation based on the image brightness, so as to detect the edges, the main operators used are Robert, Sobel, Prewitt, LOG, Kirsch, etc.

本文介绍的检测方法是通过一些差分算子，由图像的亮度计算其梯度的变化，从而检测出边缘，主要有Robert、Sobel、Prewitt、LOG、Kirsch等算子。

The experiment shows that the algorithm of the local enhancement based on dyadic wavelet transform multiscale edge is more efficient.

结果表明基于二进小波的多尺度边缘局部增强方法在检测效果和检测时间上均具有更好的算法性能。

By calculating STID in every pixel in image,the background clutter was suppressed.

实验结果显示，该算法的背景抑制效果明显，尤其对运用传统算法容易发生抑制不充分的建筑物边缘的有很好的抑制能力，与自适应阈值算法结合后的单帧目标检测也取得了满意的检测效果。

The proposed method can detect certain object boundaries, for which the original method is not applicable. E.g. it can automatically detect interior and exterior contours of an object and edges of multi-objects, starting with only one initial curve whose position is anywhere in the image. Moreover, active contours can move into boundary concavities and perform better in the presence of weak boundaries.

它能够解决原方法所不能解决的一些图像分割问题，例如，能够从任意选取的一条初始曲线出发自动检测目标物体的内外轮廓，检测多目标物体以及深度凹陷区域的边缘，并能较好地提取目标物体的弱边界。

In order to exam feasibility of ear rows counting method by machine vision, a new method was raised. This method is based on edge marker and discrete curvature.

为了评价通过机器视觉的方法进行穗行数自动检测的可行性，提出一种新的基于边界标记和离散曲率的边缘算法确定行数，建立了检测模型。

In experiment 2 we test the influence of grapheme and meaning process levels in the external source monitoring, and the result is that the error rates of the external source monitoring with meaning process level is worse than with grapheme but the difference just is margin marked

实验2，检验字形和语义加工水平对外部来源检测的影响，结果表明，语义水平加工状态下的外部来源检测错误率比字形加工状态下的差一些，但差异仅仅是边缘显著

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。