Преобразование изображений

#include <vcl.h>
#pragma hdrstop
#include "Unit1.h"
#include <FileCtrl.hpp>
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
AnsiString aPath;
TSearchRec aSearchRec; 
int i,j,r,g,b,n,k;
TColor pixel_color;
 
 
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------
 
void __fastcall TForm1::SpeedButton1Click(TObject *Sender)
{
if (OpenDialog1->Execute())
Image1->Picture->LoadFromFile (OpenDialog1->FileName) ;
k = StrToFloat(Edit1->Text);
}
//---------------------------------------------------------------------------
 
void __fastcall TForm1::SpeedButton2Click(TObject *Sender)
{
 for (int i=0; i<Image1->Picture->Width; i++)
 for(int j=0;j<Image1->Picture->Height;j++)
 {
pixel_color = Image1->Picture->Bitmap->Canvas->Pixels[i][j];
   r= GetRValue(pixel_color);
   g= GetGValue(pixel_color);
   b= GetBValue(pixel_color);
 Image2->Canvas->Pixels[i][j]= RGB(r,g,b);
 }
 
}
//---------------------------------------------------------------------------
void __fastcall TForm1::SpeedButton3Click(TObject *Sender)
{
n=Image2->Picture->Height;
for (int i=0; i<Image1->Picture->Width; i++)
for(int j=0;j<Image1->Picture->Height;j++)
 
{
if (j%k==0)
{
Image2->Canvas->Pixels[i][j]= RGB(r,g,b); }
else
{
Image2->Canvas->Pixels[i][j+n]= RGB(r,g,b); }
 
}
}

pixel_color = Image1->Picture->Bitmap->Canvas->Pixels[i][j];
   r= GetRValue(pixel_color);
   g= GetGValue(pixel_color);
   b= GetBValue(pixel_color);
 Image2->Canvas->Pixels[i][j]= RGB(r,g,b);

Image2->Canvas->Pixels[i][j]= Image1->Picture->Bitmap->Canvas->Pixels[i][j];