An Application of Dynamic Programming Theory in Image Edge Detection

A Novel Method of Image Edge Detection Based on Wavelet Domain

在小波域边缘检测的新算法

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The Analysis of the Best Algorithm of Image Edge Detection

图像边缘检测最佳算法的分析

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Application of Point Cloud Edge Detection Technology Based on Mesh Method

基于网孔法的点云数据边界提取技术的应用

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A Research on Contour Tracking and Edge Detection Based On Image Automatic Recognition

轮廓跟踪与边沿检测的图像自动识别

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Study on the method of edge detection and noise reduction

边沿检测与噪声消除方法研究

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To meet the real-time request, the license plate is first located and segmented from the grey level image after preprocessing and then binaryzation of the license plate area only is implemented, sparing the long time spent on binaryzation of the whole image.

为了满足实时性要求，避免对整幅图像进行二值化耗时较长且阈值选取困难的缺点，直接在预处理后的灰度图像中定位车牌，然后对粗定位出的车牌二值化。

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In this system, several functions are implemented, such as image importing, image smoothing, gray image binaryzation, the separation of mesh mark and gear teeth surface based on morphological filter, and the calculation of characteristic parameters of gearing mesh mark.

该系统具有图像导入、图像平滑、灰度图像二值化、基于形态学滤波的齿面接触印痕和齿面背景分离以及齿轮接触印痕特征参数计算等功能。

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For solving this issue, the paper combines the techniques of grad image binaryzation, contour tracing and edge thinning on the basis of Gauss-Laplace edge operator, and obtaines one-pixel-wide edge image with high location precision.

为解决这类问题，在高斯拉普拉斯边缘检测算子的基础上，结合了梯度图像二值化，边界跟踪和细化技术，从而得到了具有较高定位精度的单像素宽的边缘图像。

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This paper proposes a method of applying the digital image processing technique to automatic processing and analysis of the temperature field images on cholesteric crystal display, which includes such procedures as noise smoothing, binaryzation, thinning, location and superposition.

本文提出了一种运用数字图象处理技术对胆甾型液晶显示温度场图象进行自动处理和分析的方法，包括噪声平滑、二值化、细化、定位与叠加等步骤。

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In view of this goal, this article mixed has used the region growing, the binaryzation and the threshold way to segment the lung areas, and getting the satisfactory division result. ( 2) Extract the Region Of Interest.

针对这一目的，本研究运用了区域生长法、二值化以及阂值法对肺部区域进行了分割，并取得了满意的分割结果。（2）感兴趣区域的提取。

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This paper also purposes a license plate binaryzation algorithm based on a color model, and segments the characters of the plate combining the perpendicular projection and connected domain in order to avoid character adhesion or excessively segment.

本文还采用了面向车牌的基于彩色模型的车牌区域二值化算法，提出了结合垂直投影和连通域对车牌区域进行字符切分，很好的解决了字符粘连和过度切分的问题。

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The background and object are distinguished clearly in the combined action of the background light and the top light. The image noise filtered after binaryzation processing based on the Otsu algorithm is achieved good result.

在背景光源和上光源的共同作用下，背景和目标很分明，采用Otsu算法对滤波后的图像进行二值化处理也取得了很好的效果。

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Aiming at the illumination uneven images, the article has used the auto-adapted binaryzation method, which has solved the problem of the terrible binaryzation effect due to the illumination reason.

针对光照不均的图像，本文采用了快速自适应二值化方法，较好地解决了图像因光照原因二值化效果较差的问题。

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In the binaryzation process, the rationally selected binaryzation threshold θ~ can characterize well the surface topography by way of extracting the fractal dimensions from the objects to investigate.

在灰度图像的二值化转换过程中，合理选取的二值化转换阈值θ应能够通过从考察对象中所提取的分形维数来较好地表征表面形貌的相关特征。

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Aiming at the problem of uneven distribution for the target area and background area and the difficulties of separation, the method of local iteration Otsu algorithm is used to achieve image binaryzation.

针对目标区域和背景区域分布不均，难以分离的问题，提出并实现基于局部迭代的Otsu改进算法，通过实验验证其有效性。

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Analyses and compares some segmentation methods which based on image binaryzation: otsu segmentation method, segmentation method which based on histogram equalization and the segmentation method which proposed by S.D.

分析比较了指纹图像二值化分割方法。

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This method effectively avoids the complex computing on images enhancing, ROI positioning and palm-print image binaryzation in traditional methods and tracks principal lines on gray level image directly.

该方法有效地回避了传统主线提取方法对图像进行增强去噪、定位ROI、分割掌纹二值图等复杂度较高的计算，直接在全手掌灰度图像上进行主线的跟踪。

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And the optimization was also made in the difference and binaryzation in the video image post processing, which provided a great improvement in actual effect of snapshot compared with before.

在对视频图像的差分、二值化及后期处理过程中做了相应的优化，使得实际抓拍效果较改进前的有了较大提高；

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Fractal dimension, as the characteristic parameter to describe surface topography, relates closely to the grey level threshold θ in the binaryzation of grey image.

表面形貌的分形维数作为表面形貌描述的特征参数与表面形貌灰度图像二值化转换阈值θ密切相关。

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Through processing and so on binaryzation-filtration-smooth-adjustment, have completed the curve scanning pattern arrow quantification pretreatment work.

论文的主要工作有：1.通过二值化-过滤-平滑-校正等处理，完成了曲线扫描图矢量化的预处理工作。

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