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ImageWarp Class

Image warp effect filter.
Inheritance Hierarchy
SystemObject
  Accord.Imaging.FiltersBaseFilter
    Accord.Imaging.FiltersImageWarp

Namespace:  Accord.Imaging.Filters
Assembly:  Accord.Imaging (in Accord.Imaging.dll) Version: 3.6.0
Syntax
public class ImageWarp : BaseFilter
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The ImageWarp type exposes the following members.

Constructors
  NameDescription
Public methodImageWarp
Initializes a new instance of the ImageWarp class.
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Properties
  NameDescription
Public propertyFormatTranslations
Format translations dictionary.
(Overrides BaseFilterFormatTranslations.)
Public propertyWarpMap
Map used for warping images.
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Methods
  NameDescription
Public methodApply(Bitmap)
Apply filter to an image.
(Inherited from BaseFilter.)
Public methodApply(BitmapData)
Apply filter to an image.
(Inherited from BaseFilter.)
Public methodApply(UnmanagedImage)
Apply filter to an image in unmanaged memory.
(Inherited from BaseFilter.)
Public methodApply(UnmanagedImage, UnmanagedImage)
Apply filter to an image in unmanaged memory.
(Inherited from BaseFilter.)
Public methodEquals
Determines whether the specified object is equal to the current object.
(Inherited from Object.)
Protected methodFinalize
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.
(Inherited from Object.)
Public methodGetHashCode
Serves as the default hash function.
(Inherited from Object.)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Protected methodMemberwiseClone
Creates a shallow copy of the current Object.
(Inherited from Object.)
Protected methodProcessFilter
Process the filter on the specified image.
(Overrides BaseFilterProcessFilter(UnmanagedImage, UnmanagedImage).)
Public methodToString
Returns a string that represents the current object.
(Inherited from Object.)
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Extension Methods
  NameDescription
Public Extension MethodHasMethod
Checks whether an object implements a method with the given name.
(Defined by ExtensionMethods.)
Public Extension MethodIsEqual
Compares two objects for equality, performing an elementwise comparison if the elements are vectors or matrices.
(Defined by Matrix.)
Public Extension MethodToT
Converts an object into another type, irrespective of whether the conversion can be done at compile time or not. This can be used to convert generic types to numeric types during runtime.
(Defined by ExtensionMethods.)
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Remarks

The image processing filter implements a warping filter, which sets pixels in destination image to values from source image taken with specified offset (see WarpMap).

The filter accepts 8 bpp grayscale images and 24/32 color images for processing.

Sample usage:

// build warp map
int width  = image.Width;
int height = image.Height;

IntPoint[,] warpMap = new IntPoint[height, width];

int size = 8;
int maxOffset = -size + 1;

for ( int y = 0; y < height; y++ )
{
    for ( int x = 0; x < width; x++ )
    {
        int dx = ( x / size ) * size - x;
        int dy = ( y / size ) * size - y;

        if ( dx + dy <= maxOffset )
        {
            dx = ( x / size + 1 ) * size - 1 - x;
        }

        warpMap[y, x] = new IntPoint( dx, dy );
    }
}
// create filter
ImageWarp filter = new ImageWarp( warpMap );
// apply the filter
Bitmap newImage = filter.Apply( image );

Initial image:

Result image:

See Also