mainform.cpp

C++ BUILDER精彩编程实例集锦(源码)2 第三部分 文件操作 第四部分 图像处理

//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "Mainform.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------

void __fastcall TForm1::BitBtn1Click(TObject *Sender)
{
   if(this->OpenPictureDialog1->Execute())
   {
      AnsiString StrFile=this->OpenPictureDialog1->FileName;
      this->Image1->Picture->LoadFromFile(StrFile);
   }
}
//---------------------------------------------------------------------------

void __fastcall TForm1::BitBtn2Click(TObject *Sender)
{
 this->Label1->Caption="正在锐化处理图像...            ";
 this->Label1->Update();
 int iHeight=this->Image1->Picture->Height;
 int iWidth=this->Image1->Picture->Width;
  //拉普拉斯模板
 int Laplacian[9]={-1,-1,-1,-1,9,-1,-1,-1,-1};
 for(int x=1;x<iWidth-1;x++)
   for(int y=1;y<iHeight-1;y++)
   {
     int r=0,g=0,b=0;
     int Index=0;
     for(int col=-1;col<=1;col++)
       for(int row=-1;row<=1;row++)
       {
        COLORREF pixel=this->Image1->Canvas->Pixels[x+row][y+col];
	r+=GetRValue(pixel)*Laplacian[Index];
	g+=GetGValue(pixel)*Laplacian[Index];
	b+=GetBValue(pixel)*Laplacian[Index];
	Index++;
       }
     //处理颜色值溢出
     r=r>255?255:r;
     r=r<0?0:r;
     g=g>255?255:g;
     g=g<0?0:g;
     b=b>255?255:b;
     b=b<0?0:b;
     this->Image1->Canvas->Pixels[x-1][y-1]=RGB(r,g,b);
   }
  this->Label1->Caption="锐化处理图像完毕！  ";
}
//---------------------------------------------------------------------------

void __fastcall TForm1::BitBtn3Click(TObject *Sender)
{
  this->Close();
}
//---------------------------------------------------------------------------