【導(dǎo)讀】一般我們不得不陳訴在實際應(yīng)用中的運算法則的發(fā)展，選擇和更改，它是依賴于。鄰域和任務(wù)的，除此之外沒有更好的辦法了。不過，有趣的是，請注意，有幾個等價之。這份報告一個主要的意圖，。一類形狀減少算子是基于距離變換的。一個距離骨架是一個子集點，某一特定的組成。作為一個例子，在這類算子，本報告討論了一個計算方法距離骨架使用的。D4距離函數(shù)，這是適當(dāng)?shù)臄?shù)字化圖片。第二類算子產(chǎn)生的中位數(shù)或中心線數(shù)字對象在一個非迭代的方式。第三類是算子的特點是迭代細(xì)化。從歷史上看，用已經(jīng)在1862年任期線性骨架為結(jié)。目標(biāo)是計算特性的。數(shù)字對象，其中不相關(guān)的大小或數(shù)量。方法應(yīng)是獨立的立場從一組，在平面或空間，網(wǎng)。在文獻(xiàn)中的任期間是沒有用在一個獨特的。拓?fù)渚S護(hù)骨架是一個特殊的案件細(xì)化，導(dǎo)致連接的一套數(shù)碼化。的測試和刪去的輪廓像素，按順序在標(biāo)準(zhǔn)光柵掃描秩序。范圍二進(jìn)制的形象是f0，我們只使。在案件該網(wǎng)格的細(xì)胞模型，一個組成部分，本地最高的子代表一距離骨架。

　　

【正文】 monly used method and the powerful the wavelet analysis, may interweave deposes in the same place each kind of posite signal the different frequency the block signal, but carries on the edge examination through the wavelet transformation, may use its multicriteria and the multiresolution nature fully , real effective expresses the image the edge the wavelet transformation criterion reduces, is more sensitive to the image detail。 But when the criterion increases, the image detail is filtered out, the examination edge will be only the thick characteristic is extremely useful in the pattern recognition, we may be called this thick outline the image the main will be able an image main edge clear integrity extraction, this to the goal division, the recognition and so on following processing to bring the enormous speaking, the above method all is the work which does based on the image luminance information. In the multitudinous scientific research worker under, has obtained the very good effect , because the image edge receives physical condition and so on the illumination influences quite to be big above, often enables many to have a mon shorting based on brightness edge detection method, that is the edge is not continual, does not seal the phase information in the image importance as well as its stable characteristic, causes using the phase information to carry on the imagery processing into new research topic. In this paper soon introduces one kind based on the phase image characteristic examination method phase uniform is not uses the image the luminance information, but is its phase characteristic, namely supposition image Fourier ponent phase most consistent spot achievement characteristic only it can examine brightness characteristics and so on step characteristic, line characteristic, moreover can examine Mach belt phenomenon which produces as a result of the human vision sensation the phase uniformity does not need to carry on any supposition to the image characteristic type, therefore it has the very strong versatility. image edge definition The image majority main information all exists in the image edge, the main performance for the image partial characteristic discontinuity, is in the image the gradation change quite fierce place, also is the signal which we usually said has the strange change place. The strange signal the gradation change which moves towards along the edge is fierce, usually we divide the edge for the step shape and the roof shape two kind of types (as shown in Figure 11).In the step edge two side grey levels have the obvious change。 But the roof shape edge is located the gradation increase and the reduced intersection portray the peripheral point in mathematics using the gradation derivative the change, to the step edge, the roof shape edge asks its step, the second time derivative separately. To an edge, has the possibility simultaneously to have the step and the line edge characteristic. For example on a surface, changes from a plane to the normal direction different another plane can produce the step edge。 If this surface has the edges and corners which the regular reflection characteristic also two planes form quite to be smooth, then works as when edges and corners smooth surface normal after mirror surface reflection angle, as a result of the regular reflection ponent, can produce the bright light strip on the edges and corners smooth surface, such edge looked like has likely superimposed a line edge in the step edge. Because edge possible and in scene object important characteristic correspondence, therefore it is the very important image instance, an object outline usually produces the step edge, because the object image intensity is different with the background image intensity. paper selected topic theory significance The paper selected topic originates in holds the important status and the function practical application topic in the image socalled image project discipline is refers foundation discipline and so on mathematics, optics principles, the discipline which in the image application unifies which accumulates the technical background image project content is extremely rich, and so on divides into three levels differently according to the abstract degree and the research technique: Imagery processing, image analysis and image shown in Figure 12, in the chart the image division is in between the image analysis and the imagery processing, its meaning is, the image division is from the imagery processing to the image analysis essential step, also is further understands the image the foundation. The image division has the important influence to the image division and based on the division goal expression, the characteristic extraction and the parameter survey and so on transforms the primitive image as a more abstract more pact form, causes the highlevel image analysis and possibly understands the edge examination is the image division core content, therefore the edge examination holds the important status and the function in the image the edge examination research always is in the image engineering research the hot spot and the focal point, moreover the people enhance unceasingly to its attention and the investment.