delphi 之拉普拉斯算法

最新推荐文章于 2025-02-09 07:59:44 发布

丑的睡不着

最新推荐文章于 2025-02-09 07:59:44 发布

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分类专栏：源代码

本文链接：https://blog.youkuaiyun.com/weixin_42026802/article/details/80117900

本文详细介绍了如何在Delphi编程环境中实现拉普拉斯算法，包括算法的原理、步骤及代码实现，帮助读者理解并掌握该算法在Delphi中的应用。

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本文主要是16位灰阶图的拉普拉斯算法做锐化：

unit Sharp;

interface

uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, ieview, imageenview, imageen,UImageUtils, ComCtrls,
Buttons;

type
TForm1 = class(TForm)
    ImageEn1: TImageEn;
    Button1: TButton;
    dlgOpen1: TOpenDialog;
    ImageEnView1: TImageEnView;
    close: TButton;
    Edit1: TEdit;
    TrackBar1: TTrackBar;
    BitBtn1: TBitBtn;
    procedure Button1Click(Sender: TObject);
    procedure TrackBar1Change(Sender: TObject);
    procedure Edit1Change(Sender: TObject);
    procedure BitBtn1Click(Sender: TObject);
private
    { Private declarations }
    FImageBuffer: PWord;
    FImageBuffer2: PWord;
    FImageWidth, FImageHeight: Integer;
    Lock: Boolean;
    procedure sharpenImage(gray: PWord; smooth: PWord; width, height: Integer;n : Single);
    procedure sharpenImagex(gray: PWord; smooth: PWord; width, height: Integer);
public
    { Public declarations }
end;

var
Form1: TForm1;

implementation

var
templates: array[0..24] of Integer =
   (-1, -4, -7, -4, -1,
    -4, -16, -26, -16, -4,
    -7, -26, 505, -26, -7,
    -4, -16, -26, -16, -4,
    -1, -4, -7, -4, -1);
   templates1: array[0..8] of Integer =
   (0, -1, 0,
    -1, 5, -1,
    0, -1, 0);

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
n : Single;c : Integer;
t: Cardinal;
begin
if not dlgOpen1.Execute then Exit;
ImageEn1.IO.LoadFromFile(dlgOpen1.FileName);
// ImageEnView1.IO.LoadFromFile(dlgOpen1.FileName);
Tiff16BitToBuffer(dlgOpen1.FileName, FImageBuffer, FImageWidth, FImageHeight);

if Assigned(FImageBuffer2) then
FreeMem(FImageBuffer2);
GetMem(FImageBuffer2, FImageWidth * FImageHeight * SizeOf(Word));

Val(Edit1.Text,n,c);

t := GetTickCount;
sharpenImage(FImageBuffer, FImageBuffer2, FImageWidth, FImageHeight,0.95);
caption := IntToStr(GetTickCount - t);
BufferToTIFF16bit(FImageBuffer2, FImageWidth, FImageHeight,
dlgOpen1.FileName + '.123.tif');
ImageEnView1.IO.LoadFromFile(dlgOpen1.FileName + '.123.tif');

end;

procedure TForm1.sharpenImage(gray, smooth: PWord; width, height: Integer;n : Single);
var
i,j: Integer;
index, sum: Integer;
grayPtr, smoothPtr,grayPtrX: PWord;
begin
CopyMemory(smooth, gray, width * height * SizeOf(Word));

for j := 1 to height - 1 do
begin
    for i := 1 to width - 1 do
    begin
      sum