Przedstawiony poniżej kod umożliwia stworzenie efektu rozmycia (blur) na dowolnym obrazie BMP. Format pikseli musi być 24 lub 32 bitowy. [crayon-67534fba759e2941698317/] Teraz wystarczy wywołać procedurę : [crayon-67534fba759e8540138225/] Autor: Nakiel

Rozmycie obrazu - Unit1.pl - Programowanie

Rozmycie obrazu

Przedstawiony poniżej kod umożliwia stworzenie efektu rozmycia (blur) na dowolnym obrazie BMP. Format pikseli musi być 24 lub 32 bitowy.

procedure Rozmycie( Can: TCanvas; X, Y, Szerokosc, Wysokosc : Integer);

var

  cx, cy: Smallint;

  r, g, b: Byte;

  Row1: pRGBTripleArray;

  Row2: pRGBTripleArray;

  Row3: pRGBTripleArray;

  TEMP: TBitmap;

  CurRect: TRect;

begin

  TEMP := TBitmap.Create;

  try

    with TEMP do begin

      Width := Szerokosc;

      Height := Wysokosc;

      CurRect := Rect(0, 0, Szerokosc, Wysokosc);

      PixelFormat := pf24Bit;

      Canvas.CopyRect(CurRect, Can, Rect(X,Y,Szerokosc, Wysokosc));

      with Canvas do begin

        for cy := 1 to (Height - 2) do begin

          Row1 := ScanLine[cy - 1];

          Row2 := ScanLine[cy];

          Row3 := ScanLine[cy + 1];


          for cx := 1 to (Width - 2) do begin

            r := (Row1[cx - 1].rgbtRed+Row1[cx].rgbtRed+

            Row1[cx + 1].rgbtRed+

            Row2[cx - 1].rgbtRed+

            Row2[cx + 1].rgbtRed+

            Row2[cx - 1].rgbtRed+

            Row3[cx].rgbtRed+

            Row3[cx + 1].rgbtRed+

            Row3[cx].rgbtRed) div 9;


            g := (Row1[cx - 1].rgbtGreen+

            Row1[cx].rgbtGreen+

            Row1[cx + 1].rgbtGreen+

            Row2[cx - 1].rgbtGreen+

            Row2[cx + 1].rgbtGreen+

            Row2[cx - 1].rgbtGreen+

            Row3[cx].rgbtGreen+

            Row3[cx + 1].rgbtGreen+

            Row3[cx].rgbtGreen) div 9;


            b := (Row1[cx - 1].rgbtBlue+

            Row1[cx].rgbtBlue+

            Row1[cx + 1].rgbtBlue+

            Row2[cx - 1].rgbtBlue+

            Row2[cx + 1].rgbtBlue+

            Row2[cx - 1].rgbtBlue+

            Row3[cx].rgbtBlue+

            Row3[cx + 1].rgbtBlue+

            Row3[cx].rgbtBlue) div 9;


            Row2[cx].rgbtBlue := b;

            Row2[cx].rgbtGreen := g;

            Row2[cx].rgbtRed := r;

          end;

        end;

      end;

      Can.CopyRect(Rect(X,Y,Szerokosc,Wysokosc), Canvas, CurRect);

    end;

  finally

    TEMP.Free;

  end;

end;

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

procedure Rozmycie( Can: TCanvas; X, Y, Szerokosc, Wysokosc : Integer);

var

cx, cy: Smallint;

r, g, b: Byte;

Row1: pRGBTripleArray;

Row2: pRGBTripleArray;

Row3: pRGBTripleArray;

TEMP: TBitmap;

CurRect: TRect;

begin

TEMP := TBitmap.Create;

try

with TEMP do begin

Width := Szerokosc;

Height := Wysokosc;

CurRect := Rect(0, 0, Szerokosc, Wysokosc);

PixelFormat := pf24Bit;

Canvas.CopyRect(CurRect, Can, Rect(X,Y,Szerokosc, Wysokosc));

with Canvas do begin

for cy := 1 to (Height - 2) do begin

Row1 := ScanLine[cy - 1];

Row2 := ScanLine[cy];

Row3 := ScanLine[cy + 1];

for cx := 1 to (Width - 2) do begin

r := (Row1[cx - 1].rgbtRed+Row1[cx].rgbtRed+

Row1[cx + 1].rgbtRed+

Row2[cx - 1].rgbtRed+

Row2[cx + 1].rgbtRed+

Row2[cx - 1].rgbtRed+

Row3[cx].rgbtRed+

Row3[cx + 1].rgbtRed+

Row3[cx].rgbtRed) div 9;

g := (Row1[cx - 1].rgbtGreen+

Row1[cx].rgbtGreen+

Row1[cx + 1].rgbtGreen+

Row2[cx - 1].rgbtGreen+

Row2[cx + 1].rgbtGreen+

Row2[cx - 1].rgbtGreen+

Row3[cx].rgbtGreen+

Row3[cx + 1].rgbtGreen+

Row3[cx].rgbtGreen) div 9;

b := (Row1[cx - 1].rgbtBlue+

Row1[cx].rgbtBlue+

Row1[cx + 1].rgbtBlue+

Row2[cx - 1].rgbtBlue+

Row2[cx + 1].rgbtBlue+

Row2[cx - 1].rgbtBlue+

Row3[cx].rgbtBlue+

Row3[cx + 1].rgbtBlue+

Row3[cx].rgbtBlue) div 9;

Row2[cx].rgbtBlue := b;

Row2[cx].rgbtGreen := g;

Row2[cx].rgbtRed := r;

end;

Can.CopyRect(Rect(X,Y,Szerokosc,Wysokosc), Canvas, CurRect);

end;

finally

TEMP.Free;

end;

Teraz wystarczy wywołać procedurę :

Rozmycie(image1.picture.Bitmap.Canvas,-10,-10,650,490);

1	Rozmycie(image1.picture.Bitmap.Canvas,-10,-10,650,490);

Autor: Nakiel