Statlog (Vehicle Silhouettes) Dataset
Data and Resources

Statlog (Vehicle Silhouettes) DatasetDAT
Data folder ...
Additional Info
Field  Value 

Source  Drs. Pete Mowforth and Barry Shepherd, Turing Institute 
Maintainer  Alistair Sutherland 
Associated Tasks  Classification 
Collection Period  198687 
Number of Instances  946 
Package Description  Attributes: COMPACTNESS (average perim)**2/area, CIRCULARITY (average radius)**2/area, DISTANCE CIRCULARITY area/(av.distance from border)**2, RADIUS RATIO (max.radmin.rad)/av.radius, PR.AXIS ASPECT RATIO (minor axis)/(major axis), MAX.LENGTH ASPECT RATIO (length perp. max length)/(max length), SCATTER RATIO (inertia about minor axis)/(inertia about major axis), ELONGATEDNESS area/(shrink width)**2, PR.AXIS RECTANGULARITY area/(pr.axis length*pr.axis width), MAX.LENGTH RECTANGULARITY area/(max.length*length perp. to this), SCALED VARIANCE (2nd order moment about minor axis)/area ALONG MAJOR AXIS, SCALED VARIANCE (2nd order moment about major axis)/area ALONG MINOR AXIS, SCALED RADIUS OF GYRATION (mavar+mivar)/area, SKEWNESS ABOUT (3rd order moment about major axis)/sigma_min**3 MAJOR AXIS, SKEWNESS ABOUT (3rd order moment about minor axis)/sigma_maj**3 MINOR AXIS, KURTOSIS ABOUT (4th order moment about major axis)/sigma_min**4 MINOR AXIS, KURTOSIS ABOUT (4th order moment about minor axis)/sigma_maj**4 MAJOR AXIS, HOLLOWS RATIO (area of hollows)/(area of bounding polygon), Where sigma_maj**2 is the variance along the major axis and sigma_min**2 is the variance along the minor axis, and area of hollows= area of bounding polyarea of object. The area of the bounding polygon is found as a side result of the computation to find the maximum length. Each individual length computation yields a pair of calipers to the object orientated at every 5 degrees. The object is propagated into an image containing the union of these calipers to obtain an image of the bounding polygon. NUMBER OF CLASSES: 4 OPEL, SAAB, BUS, VAN. 
Dataset has missing values  False 