Feret Diameter 费雷特直径
The maximum spacing between parallel tangents to a feature in a given direction.
Area
Feature Area
- the total number of detected pixels within the feature.
Aspect Ratio长宽比
The ratio of Length divided by Breadth.
Breadth宽度
The length of the shortest feret.
CoincCount符合数（重合数）coincidence counting 符合计数Coincidence count - the number of internal features contained within the external feature. CoincParam
Coincidence Parameter - the sum total of the specified parameter for each of the coincident internal features.
ConvexArea 外切凸多边形面积
The area of the polygon circumscribing the feature, formed by tangents to its boundary - e also ConvxPerim.
ConvxPerim外切凸多边形周长
The length of the polygon circumscribing the feature, formed by tangents to its boundary. This is similar to the length of a piece of string stretched around the feature.
CurveLength曲线长度
The length of the longest side of a rectangle having the same area and perimeter as the measured feature :-
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Perimeter + sqrt ( Perimeter x Perimeter - 16 x Area )
Curve Length = _______________________________________________________
4
This gives an approximation to the length of curved fibres etc.
CurveWidth曲线宽度
The length of the shortest side of a rectangle having the same area and perimeter as the measured feature :-
Perimeter - sqrt ( Perimeter x Perimeter - 16 x Area )
Curve Width = _____________________________________________________
4
This gives an approximation to the width of curved fibres etc.
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DerivOrient 颗粒方向
The orientation of the feature, derived from the feret lengths.
Ends下端点数
The number of downward pointing projections on the feature.
EquivDiam 等效直径
Equivalent Circle Diameter - ie the diameter of a circle having the same area as the feature :- Feret0 0o费雷特长度
The length of the 0 degree feret. This corresponds to the horizontal width of the feature.
Feret112.5 112.5o费雷特长度
The length of the 112.5 degree feret.
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Feret135 135o费雷特长度
The length of the 135 degree feret.
Feret157.5 57.5o费雷特长度
The length of the 57.5 degree feret.
Feret22.5 22.5o费雷特长度
The length of the 22.5 degree feret.
给领导送礼
Feret45 45o费雷特长度
The length of the 45 degree feret.
Feret67.5 67.5o费雷特长度
The length of the 67.5 degree feret.
Feret90 90o费雷特长度
The length of the 90 degree feret. This corresponds to the vertical height of the feature.
Forks 向下的叉数
The number of downward-pointing forks in the feature.
innsFullRatio 填充率
The Fullness Ratio - this is a shape factor, equal to the square root of the ratio of area to circum scribed area.
文章翻译Area
Fullness Ratio = sqrt ( _________________)
Convex Area
GreyVariance 灰度方差
The variance of the grey-levels of pixels in the stored grey image that are overlaid by the feature. HorizProj 水平投影
allowance
The Horizontal Projection of the feature - ie the number of horizontal chords in the feature.
Int.Grey 灰度和
Integrated Grey Level - the sum of the grey-levels of pixels in the stored grey image that are overlaid by the feature.
Joins
The number of downward-pointing joins in the feature, excluding joins at the bottom of a hole. Length
The length of the longest feret.
MeanGrey 平均灰度
The mean of the grey-levels of pixels in the stored grey image that are overlaid by the feature. Orientation 方向
The angle of the longest feret.
OrthoFeret 直交费雷特长度
Orthogonal feret - the length of the feret that is at right angles to the longest feret.
OrthOrient 直交角度
Orthogonal Orientation - the angle of the feret that is at right angles to the longest feret. Perimeter 周
长
The total length of the boundary of the feature. This is calculated from the Horizontal and V ertical Projections, with an allowance for the number of corners.
Roundness 圆度
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A shape factor which gives a minimum value of unity for a circle. This is calculated from the ratio of perimeter squared to area.
Perimeter x Perimeter
Roundness = ______________________
4 x p x Area x 1.064
The adjustment factor of 1.064 corrects the perimeter for the effect of the corners produced by the digitisation of the image.
T ops
The number of tops in the feature.
UrDef1*
UrDef2**The are ud for Ur Defined Feature Expressions.
VertProj
The V ertical Projection of the feature - ie the number of vertical chords in the feature.
X FCP The X co-ordinate of the Feature Count Point.s m art exhibition
X Max(F0)The maximum X co-ordinate of the feature.
X Min(F0)The minimum X co-ordinate of the feature.
XCentroid The X co-ordinate of the centroid of the feature.
Y FCP The Y co-ordinate of the Feature Count Point.
Y Max(F90)The maximum Y co-ordinate of the feature.
Y Min(F90)The minimum Y co-ordinate of the feature.
YCentroid The Y co-ordinate of the centroid of the feature. Y重心
Field
Primary Parameters
Area
The total number of detected pixels in the field which fall within the measure frame.
Intercept H
Horizontal intercept. The number of horizontal detected chords that end within the Measure Frame. A horizontal detec ted chord is an unbroken line of detected pixels.
Intercept V
V ertical Intercept. Similar to Horizontal Intercept but measured in the vertical direction, ie, gives the interctions of columns of pixels with the lower edge of image detail.
Perimeter
The total length of the boundary around all the detected areas within the Measure Frame.
Count
The number of features per field, a non-dimensional quantity. Each detected feature is counted once only, at the feature count point.
Derived T erms
The following parameters we term DERIVED, becau they are derived from the primary
③
parameters.
Area Fraction
This is a measure of the relative quantity of a given pha, it is obtained by measuring field area as a proportion of the measure frame.
Field Area
Area Fraction = _____________________
Measure Frame Area
Anisotropy
This may be ud to describe the orientation of the field. It is a dimensionless measurement and is defined as :-
danai guriraHorizontal Area
Anisotropy = ___________________
V ertical Intercept
If the Anisotropy is greater than 1 then the image is elongated vertically with respect to the image dis
play
If the Anisotropy is less than 1 then the image is elongated horizontally with respect to the image display
儚さIf the Anisotropy is equal to one then the image is randomly oriented
NOTE : An Anisotropy of one does not guarantee random orientation as simple linear structures oriented at 45 degrees will also have an anisotropy of one.
Area Fill
This is the ratio of the area of interest to the area of everything el.
阿拉伯数字英文Field Area
Area Fill = _________________________________
Measure Frame Area - Field Area
Mean Chord
This is a measure of the average horizontal chord and is expresd in the horizontal direction only. The results are expresd in linear units of calibration.
Field Area
Mean Chord = ____________________
Horizontal Intercept
Intercepts
The number of 'hits' by scanning lines on the leading or trailing edge (but not both) of features .
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