IntegralImage class

2D Integral Image (Summed Area Table) for $O(1)$ box query evaluations.

Constructors

IntegralImage.fromImage(FaceImage image)
Creates an IntegralImage from a grayscale FaceImage.
factory

Properties

hashCode → int
The hash code for this object.
no setterinherited
height → int
Height of original image.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
width → int
Width of original image.
final

Methods

getSum(int x1, int y1, int x2, int y2) → int
Evaluates the total sum of pixel values within rectangle x1, y1 to x2, y2 (inclusive) in $O(1)$ time.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited