| AbstractMetaObjectFinder | 
 Ancestor for object finders that use a base finder. 
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| AbstractObjectFinder | 
 Ancestor for finders that locate objects in the report of an image. 
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| AllFinder | 
 Returns all indices. 
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| ByMetaDataNumericValue | 
 Returns indices of objects which numeric meta-data value match the min/max. 
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| ByMetaDataStringValue | 
 Outputs the indices of objects where the specified regular expression matches the value associated with the given meta-data key. 
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| HasMetaDataValue | 
 Outputs the indices of objects where the specified meta-data key is present. 
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| Invert | 
 Inverts the indices of the base object finder. 
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| MultiObjectFinder | 
 Applies multiple object finding algorithms to the data. 
 The indices can be either joined or intersected. 
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| NullFinder | 
 Finds no indices. 
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| ObjectsInPolygon | 
 Locates the objects that fall into the defined polygon. 
 Partial hits can be considered as well. 
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| ObjectsInRegion | 
 Locates the objects that fall into the defined region. 
 Partial hits can be considered as well. 
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| PolygonPoints | 
 Returns the indices of objects which polygons satisfy specified min/max for number of points. 
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| Size | 
 Applies the minimum/maximum constraints to width/height (according to the chosen type). 
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