Program Penampilan Elemen Warna Citra

listing program nya sebagai berikut:


unit Unit1;
interface
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ExtCtrls, StdCtrls, ExtDlgs;
type
  TForm1 = class(TForm)
    Button1: TButton;
    Label1: TLabel;
    Edit1: TEdit;
    Label2: TLabel;
    Edit2: TEdit;
    Label3: TLabel;
    Edit3: TEdit;
    Image1: TImage;
    OpenPictureDialog1: TOpenPictureDialog;
    Label4: TLabel;
    procedure Button1Click(Sender: TObject);
    procedure Image1MouseDown(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
  private
    { Private declarations }
  public
    { Public declarations }
  end;
var
  Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.Button1Click(Sender: TObject);
begin
if (OpenPictureDialog1.Execute ) then
begin
  image1.Picture.LoadFromFile(OpenPictureDialog1.FileName )
end;
end;
procedure TForm1.Image1MouseDown(Sender: TObject; Button: TMouseButton;
  Shift: TShiftState; X, Y: Integer);
  var
  pc:pbyteArray;
  r,g,b:byte;
begin
if (image1.Picture.Bitmap.PixelFormat =pf24bit) then
begin
  pc:=image1.Picture.Bitmap.ScanLine [y];
  r:=pc[3*x+2];
  g:=pc[3*x+1];
  b:=pc[3*x];
  label4.Caption:='posisi('+inttostr(x)+','+inttostr(y)+')';
  edit1.Text := inttostr(r);
  edit2.Text :=inttostr(g);
 edit3.Text:=inttostr(b);
end;
end;
end.
repernsi dari buku pemograman delphi untuk aplikasi mesin visi menggunakan webcam
penulis: balza achmad
website:www.gavamedia.net