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bool CameraClass::GreyImage(float *Array,float max,float min, int width, int height,LPCTSTR bmpfile){
//Mediante la recta y=Ax+B donde x es un valor de Array
//Variando min y max se logra modificar el contraste
float B=min*255/(min-max);
float A=(255-B)/max;
//BYTE *Buffer;
//Buffer= new BYTE [3*width*height];
BYTE Buffer[3*200*200]; //deberia asignarse dinamicamente pero da error!
for (int i=0;i<height;i++){
for(int j=0;j<width;j++){
Buffer[3*(width*((height-1)-i)+j)]=(BYTE)(A*Array[width*i+j]+B);
Buffer[3*(width*((height-1)-i)+j)+1]=(BYTE)(A*Array[width*i+j]+B);
Buffer[3*(width*((height-1)-i)+j)+2]=(BYTE)(A*Array[width*i+j]+B);
}
}
long paddedsize=width*height*3;
// declare bmp structures
BITMAPFILEHEADER bmfh;
BITMAPINFOHEADER info;
// andinitialize them to zero
memset ( &bmfh, 0, sizeof (BITMAPFILEHEADER ) );
memset ( &info, 0, sizeof (BITMAPINFOHEADER ) );
// fill the fileheader with data
bmfh.bfType = 0x4d42; // 0x4d42 = 'BM'
bmfh.bfReserved1 = 0;
bmfh.bfReserved2 = 0;
bmfh.bfSize = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER) + paddedsize;
bmfh.bfOffBits = 0x36; // number of bytes to start of bitmap bits
// fill the infoheader
info.biSize = sizeof(BITMAPINFOHEADER);
info.biWidth = width;
info.biHeight = height;
info.biPlanes = 1; // we only have one bitplane
info.biBitCount = 24; // RGB mode is 24 bits
info.biCompression = BI_RGB;
info.biSizeImage = 0; // can be 0 for 24 bit images
info.biXPelsPerMeter = 0x0ec4; // paint and PSP use this values
info.biYPelsPerMeter = 0x0ec4;
info.biClrUsed = 0; // we are in RGB mode and have no palette
info.biClrImportant = 0; // all colors are important
// now we open the file to write to
HANDLE file = CreateFile ( bmpfile , GENERIC_WRITE, FILE_SHARE_READ,
NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL );
if ( file == NULL )
{
CloseHandle ( file );
return false;
}
// write file header
unsigned long bwritten;
if ( WriteFile ( file, &bmfh, sizeof ( BITMAPFILEHEADER ), &bwritten, NULL ) == false )
{
CloseHandle ( file );
return false;
}
// write infoheader
if ( WriteFile ( file, &info, sizeof ( BITMAPINFOHEADER ), &bwritten, NULL ) == false )
{
CloseHandle ( file );
return false;
}
// write image data
if ( WriteFile ( file, Buffer, paddedsize, &bwritten, NULL ) == false )
{
CloseHandle ( file );
return false;
}
// and close file
CloseHandle ( file );
//delete [] Buffer;
return true;
}//OK
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