The "Every Method" editing demo allows you to preview 300 editing, analysis and effects methods, and generate sample code.

Image Editing Methods

◼Analysis Methods
◼Color Adjustment Methods
◼Color Depth Methods
◼Detection Methods
◼Special Detection Methods
◼Document Methods
◼Drawing Methods
◼Effects Methods
◼Filter Methods
◼Geometric Methods
◼Painting and Alpha Methods
◼Smoothing Methods
◼Other Methods
◼Selection Methods
◼Interactive Tools

Test Images

ImageEnView1.IO.LoadFromFile( 'D:\ImageTest1.jpg' );

  

CropSel

// Make circular selection of entire image and crop
ImageEnView1.SelectionBase := iesbBitmap;
ImageEnView1.SelectEllipse(ImageEnView1.IEBitmap.Width div 2,
                           ImageEnView1.IEBitmap.Height div 2,
                           ImageEnView1.IEBitmap.Width,
                           ImageEnView1.IEBitmap.Height);
ImageEnView1.Proc.CropSel();

  

Crop

// Crop 25% of all sides of the image
ImageEnView1.Proc.Crop( ImageEnView1.IEBitmap.Width div 4,
                        ImageEnView1.IEBitmap.Height div 4,
                        MulDiv( ImageEnView1.IEBitmap.Width, 3, 4 ),
                        MulDiv( ImageEnView1.IEBitmap.Height, 3, 4 ));

  

// Crop 10% from top-left corner, and 30% from bottom-right corner and stretch
// by specifying 4 points (which will become the new corners)
x1 := MulDiv( ImageEnView1.IEBitmap.Width, 10, 100 );
y1 := MulDiv( ImageEnView1.IEBitmap.Height, 10, 100 );
x2 := ImageEnView1.IEBitmap.Width - MulDiv( ImageEnView1.IEBitmap.Width, 30, 100 );
y2 := ImageEnView1.IEBitmap.Height - MulDiv( ImageEnView1.IEBitmap.Height, 30, 100 );
ImageEnView1.Proc.Crop([ DPoint( x1, y1 ),                            // Top-Left corner
                         DPoint( ImageEnView1.IEBitmap.Width, 0 ),    // Top-right corner
                         DPoint( x2, y2 ),                            // Bottom-right corner
                         DPoint( 0, ImageEnView1.IEBitmap.Height )    // Bottom-Left corner
                         ]);

  

// Crop the image to a random shape
ImageEnView1.Proc.Crop( 0, 0, ImageEnView1.IEBitmap.Width, ImageEnView1.IEBitmap.Height, TIEShape( Random( ord( High( TIEShape )) - 1 )), clNone, False );

  

Flip

// Flip the image horizontally
ImageEnView1.Proc.Flip( fdHorizontal );

  

ImageResize

// Add a black border to the image
ImageEnView1.Proc.ImageResize( ImageEnView1.IEBitmap.Width + 20,
                               ImageEnView1.IEBitmap.Height + 20,
                               iehCenter, ievCenter,
                               255, clBlack );

  

Resample

// Scale the image to half size
ImageEnView1.Proc.Resample( 0.5, rfLanczos3 );

  

Rotate

// Rotate the image 90° counter-clockwise
ImageEnView1.Proc.Rotate( 90 );

  

RotateAndCrop

// Rotate the image 15° counter-clockwise and crop to maintain only image area
ImageEnView1.Proc.RotateAndCrop( 15, ierBicubic, 0, iecaAngledPhoto );

  

RoundImage

// Add round corners to the image
ImageEnView1.Proc.RoundImage( ImageEnView1.IEBitmap.Width div 10,
                              ImageEnView1.IEBitmap.Height div 10 );

  

ShiftChannel

// Shift to -5 horizontally and -2 vertically in the Blue channel, filling new areas with 0
ImageEnView1.Proc.ShiftChannel( -5, -2, iecBlue, 0 );

  

PerspectiveDraw

// Perspective drawing image offset on left
yOffset := 0;
ImageEnView1.IEBitmap.Allocate( 300, 300, clBlack );
ImageEnView1.Proc.PerspectiveDraw( srcBMP,                                       // Source image
                                   0, yOffset,                                   // Top-left
                                   ImageEnView1.IEBitmap.Width - 1, 0,           // Top-Right
                                   ImageEnView1.IEBitmap.Width - 1, ImageEnView1.IEBitmap.Height - 1, // Bottom-right
                                   0, ImageEnView1.IEBitmap.Height - yOffset,    // Bottom-left
                                   -1, -1, True);

  

AutoCrop

// Remove any black border from the image (with tolerance of 30)
ImageEnView1.Proc.AutoCrop( 30, clBlack );

  

CropTransparentBorder

// Remove any transparent area from the edge of the image
ImageEnView1.Proc.CropTransparentBorder();

   

RadialStretch

// Correction of pin cushion effect in image
a := 0.045;
b := 0;
c := 0;
d := 1.0 - (a+b+c);
ImageEnView1.Proc.RadialStretch( a, b, c, d,
                                 a, b, c, d,
                                 a, b, c, d );

  

thinPlateSplineShapeTransform (IEVision)

// Apply a Thin Plate Spline Shape Transformation to an image
srcPoints := IEVisionLib().createVectorPoint2f();
dstPoints := IEVisionLib().createVectorPoint2f();

// Create a four point selection of the middle third of the image
// TL
srcPoints.push_back( IEVisionPoint2f( 50, 50 ));
dstPoints.push_back( IEVisionPoint2f( 50, 50 ));
// TR
srcPoints.push_back( IEVisionPoint2f( 250, 50 ));
dstPoints.push_back( IEVisionPoint2f( 250, 50 ));
// BR
srcPoints.push_back( IEVisionPoint2f( 50, 250 ));
dstPoints.push_back( IEVisionPoint2f( 50, 250 ));
// BL
srcPoints.push_back( IEVisionPoint2f( 250, 250 ));
dstPoints.push_back( IEVisionPoint2f( 300, 300 ));    // Offset bottom right to edge

im := SourceIEViewer.IEBitmap.GetIEVisionImage().thinPlateSplineShapeTransform( srcPoints, dstPoints );
ImageEnView1.IEBitmap.AssignIEVisionImage( im );

  

Warp

// Push the center of the image to the right
ImageEnView1.Proc.Warp( Point( 150, 150 ), 25, 0, 50 );

  

JoinBitmaps

// Joining two bitmaps that are 300px wide with some overlapping content

  


// Join two images horizontally and display them (without checking for overlapping content)
bmpL := TIEBitmap.Create();
bmpR := TIEBitmap.Create();
bmpL.Read( 'D:\JoinBitmap_Left.png' );
bmpR.Read( 'D:\JoinBitmap_Right.png' );
ImageEnView1.Proc.JoinBitmaps( bmpL, bmpR, False, clNone );
bmpL.Free();
bmpR.Free();

// Result is 600px wide - Overlap remains


// Join two images horizontally and display them (performing an exhaustive search for overlapping content)
bmpL := TIEBitmap.Create();
bmpR := TIEBitmap.Create();
bmpL.Read( 'D:\JoinBitmap_Left.png' );
bmpR.Read( 'D:\JoinBitmap_Right.png' );
ImageEnView1.Proc.JoinBitmaps( bmpL, bmpR, False, clNone, True, 0.8, True );
bmpL.Free();
bmpR.Free();

// Result is 473px wide - Overlap is correctly removed

warpPerspective (IEVision)

// Apply a keystone perspective by narrowing the top of the image by 20% on each side
w := ImageEnView1.IEBitmap.Width;
h := ImageEnView1.IEBitmap.Height;
inset := MulDiv( w, 20, 100 );

// Map the image corners (TL, TR, BR, BL) to a trapezoid
srcPoints := IEVisionLib().createVectorPoint2f();
dstPoints := IEVisionLib().createVectorPoint2f();
srcPoints.push_back( IEVisionPoint2f( 0, 0 ));          dstPoints.push_back( IEVisionPoint2f( inset, 0 ));
srcPoints.push_back( IEVisionPoint2f( w - 1, 0 ));      dstPoints.push_back( IEVisionPoint2f( w - 1 - inset, 0 ));
srcPoints.push_back( IEVisionPoint2f( w - 1, h - 1 ));  dstPoints.push_back( IEVisionPoint2f( w - 1, h - 1 ));
srcPoints.push_back( IEVisionPoint2f( 0, h - 1 ));      dstPoints.push_back( IEVisionPoint2f( 0, h - 1 ));
hmat := IEVisionLib().createMath().findHomography( srcPoints, dstPoints, ievREGULAR );

ImageEnView1.IEBitmap.AssignIEVisionImage( ImageEnView1.IEBitmap.GetIEVisionImage().warpPerspective( hmat, IEVisionSize( w, h ), ievLINEAR, ievBORDER_CONSTANT, IEVisionScalar( 0, 0, 0, 0 ), False ));
ImageEnView1.Update();

  

perspectiveTransform (IEVision)

// Find where a point on the original image is positioned after applying a homography (e.g. from warpPerspective above)
hmat := IEVisionLib().createMath().findHomography( srcPoints, dstPoints, ievREGULAR );

// Points are stored as a 1 row, 2 channel float image of x,y pairs
ptsIn := IEVisionLib().createImage( 1, 1, ievFLOAT32, 2 );
pIn := ptsIn.getScanline( 0 );
pIn[0] := 200;
pIn[1] := 150;

ptsOut := IEVisionLib().createImage();
ptsIn.perspectiveTransform( ptsOut, hmat );
pOut := ptsOut.getScanline( 0 );
ShowMessage( Format( '200,150 => %.1f,%.1f', [ pOut[0], pOut[1] ]));

// Grid points (green) and a selected point (red) mapped onto the warped image
  

warpAffine (IEVision)

// Skew the image by 20% and scale it to 90%
w := ImageEnView1.IEBitmap.Width;
h := ImageEnView1.IEBitmap.Height;
skew := MulDiv( w, 20, 100 );

// Move the top-left, top-right and bottom-left corners
srcPoints := IEVisionLib().createVectorPoint2f();
dstPoints := IEVisionLib().createVectorPoint2f();
srcPoints.push_back( IEVisionPoint2f( 0, 0 ));  dstPoints.push_back( IEVisionPoint2f( skew, 0 ));
srcPoints.push_back( IEVisionPoint2f( w, 0 ));  dstPoints.push_back( IEVisionPoint2f( skew + w * 0.9, 0 ));
srcPoints.push_back( IEVisionPoint2f( 0, h ));  dstPoints.push_back( IEVisionPoint2f( 0, h * 0.9 ));
M := IEVisionLib().createMath().getAffineTransform( srcPoints, dstPoints );

ImageEnView1.IEBitmap.AssignIEVisionImage( ImageEnView1.IEBitmap.GetIEVisionImage().warpAffine( M, IEVisionSize( w, h ), ievLINEAR, ievBORDER_CONSTANT, IEVisionScalar( 0, 0, 0, 0 ), False ));
ImageEnView1.Update();

  

CopyRectTo

// Copy a 150x150 area of the image at 18,18 to position 142,142 of another image
ImageEnView1.IEBitmap.CopyRectTo( ImageEnView2.IEBitmap, 18, 18, 142, 142, 150, 150, false );
ImageEnView2.Update(); // Show changes in our viewer

  

MoveRegion

// Move the left half of the image to the right, filling the vacated area with red
ww := ImageEnView1.IEBitmap.Width div 2;
ImageEnView1.IEBitmap.MoveRegion( 0, 0, ww, ImageEnView1.IEBitmap.Height, ImageEnView1.IEBitmap.Width - ww, 0, clRed, True, False );
ImageEnView1.Update(); // Show changes in our viewer

  

See Also

◼Analysis Methods
◼Color Adjustment Methods
◼Color Depth Methods
◼Detection Methods
◼Special Detection Methods
◼Document Methods
◼Drawing Methods
◼Effects Methods
◼Filter Methods
◼Geometric Methods
◼Painting and Alpha Methods
◼Smoothing Methods
◼Other Methods
◼Selection Methods
◼Interactive Tools

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