@class NSNumber, NSArray; @interface VNDetectContoursRequest : VNImageBasedRequest @property (nonatomic) BOOL forceUseInputCVPixelBufferDirectly; @property (nonatomic) BOOL inHierarchy; @property (nonatomic) float contrastAdjustment; @property (retain, nonatomic) NSNumber *contrastPivot; @property (nonatomic) BOOL detectsDarkOnLight; @property (nonatomic) BOOL detectDarkOnLight; @property (nonatomic) unsigned long long maximumImageDimension; @property (readonly, copy) NSArray *results; + (Class)configurationClass; - (BOOL)internalPerformRevision:(unsigned long long)a0 inContext:(id)a1 error:(id *)a2; - (void)applyConfigurationOfRequest:(id)a0; - (id)applicableDetectorTypeForRevision:(unsigned long long)a0 error:(id *)a1; - (BOOL)willAcceptCachedResultsFromRequestWithConfiguration:(id)a0; @end