i have to write an image processing program that can invert, blur, sharpen, threshold, and then resave an image. here is what i have so far:
//----------------------------------------------------------------------
// SECTION 1: Preprocessor Commands
//----------------------------------------------------------------------
// Include Win32 API Libraries (headers)
#include <windows.h>
#include <windowsx.h>
#include <commctrl.h>
#include <string.h>
#include <stdio.h>
// Define the maximum number of letters that text control objects can have
#define MAXLETTERS 32000
#define MaxSize 512
// Define event-ID numbers for the control objects
#define ID_BTTN 1001
#define ID_FNAME 1002
#define ID_FOPEN 2001
#define ID_FEXIT 2002
#define ID_INV 2003
#define ID_ROTATE 2004
#define ID_BLUR 2005
#define ID_FLIP 2006
#define ID_Sharp 2007
#define ID_Shrink 2008
#define ID_Threshold 2009
//----------------------------------------------------------------------
// SECTION 2: Computational Code
//----------------------------------------------------------------------
// Declare global variables: flowdata is available to all subsequent functions
unsigned char imgdata[MaxSize][MaxSize];
int imgheight, imgwidth;
// Function DrawData(): draws data from flowdata array onto screen
void DrawData(HWND window)
{
// Declare local variables
int col, row;
unsigned char shade;
HDC drawing_context = GetDC(window);
// Draw the pixels
for (row = 0 ; row < imgheight ; row++)
for (col = 0 ; col < imgwidth ; col++)
{
shade = imgdata[row][col];
SetPixel(drawing_context, col+50, row+50, RGB(shade, shade, shade));
}
}
// flips data from flowdata array onto screen
void Inv(HWND window)
{
// Declare local variables
int col, row;
unsigned char shade;
HDC drawing_context = GetDC(window);
// Draw the pixels
for (row = 0 ; row < imgheight ; row++)
for (col = 0 ; col < imgwidth ; col++)
{
shade = imgdata[row][col];
SetPixel(drawing_context, col+50, 195-row, RGB(shade, shade, shade));
}
}
//Function to blur the image
void Blur(HWND window)
{
// Declare local variables
int col, row;
unsigned char shade;
unsigned char shade0;
unsigned char shade1;
unsigned char shade2;
unsigned char shade3;
unsigned char shade4;
unsigned char shade5;
unsigned char shade6;
unsigned char shade7;
unsigned char shadeBlur;
HDC drawing_context = GetDC(window);
// Draw the pixels
for (row = 0 ; row < imgheight ; row++)
for (col = 0 ; col < imgwidth ; col++)
{
shade = imgdata[row][col];
shade0 = imgdata[row-4][col-4];
shade1 = imgdata[row-3][col-3];
shade2 = imgdata[row-2][col-2];
shade3 = imgdata[row-1][col-1];
shade4 = imgdata[row+1][col+1];
shade5 = imgdata[row+2][col+2];
shade6 = imgdata[row+4][col+3];
shade7 = imgdata[row+4][col+4];
shadeBlur = (shade + shade0 + shade1 + shade2 + shade3 + shade4 + shade5 + shade5 + shade6 + shade7 )/10;
SetPixel(drawing_context, col+50, row+50, RGB(shadeBlur, shadeBlur, shadeBlur));
}
}
//end blur
//Function to Sharpen Image
void Sharp(HWND window)
{
// Declare local variables
int col, row;
unsigned char shade;
unsigned char shade0;
unsigned char shade1;
unsigned char shade2;
unsigned char shade3;
unsigned char shade4;
unsigned char shade5;
unsigned char shade6;
unsigned char shade7;
unsigned char shadeSharp;
HDC drawing_context = GetDC(window);
// Draw the pixels
for (row = 0 ; row < imgheight ; row++)
for (col = 0 ; col < imgwidth ; col++)
{
shade0 = imgdata[row-4][col-4];
shade1 = imgdata[row-3][col-3];
shade2 = imgdata[row-2][col-2];
shade3 = imgdata[row-1][col-1];
shade = imgdata[row][col];
shade4 = imgdata[row+1][col+1];
shade5 = imgdata[row+2][col+2];
shade6 = imgdata[row+4][col+3];
shade7 = imgdata[row+4][col+4];
shadeSharp = (shade + shade0 + shade1 + shade2)*1.25;
SetPixel(drawing_context, col+50, row+50, RGB(shadeSharp, shadeSharp, shadeSharp));
}
}
//End Sharpen
//Function to rotate image 90 degrees
void Rotate90Degrees(HWND window)
{
// Declare local variables
int col, row;
unsigned char shade;
HDC drawing_context = GetDC(window);
// Draw the pixels
for (row = 0 ; row < imgwidth ; row++)
for (col = 0 ; col < imgheight ; col++)
{
shade = imgdata[col][row];
SetPixel(drawing_context, col+50, row-23, RGB(shade, shade, shade));
}
}
//end Rotate90Degrees
//Coarsen
void Shrink(HWND window)
{
// Declare local variables
int col, row;
unsigned char shade;
HDC drawing_context = GetDC(window);
// Draw the pixels
for (row = 0 ; row < imgheight ; row++)
for (col = 0 ; col < imgwidth ; col++)
{
shade = imgdata[row][col];
SetPixel(drawing_context, col+50, 195-row, RGB(shade, shade, shade));
}
}
// Function LoadData(): loads data from file name in file name box
int LoadData(HWND window)
{
// Declare local variables
HWND file_name_box;
char filename[MAXLETTERS], imgformat[80];
FILE * infile;
int row, col, imgdepth;
// Get the input file's name from the File Text Box
file_name_box = GetDlgItem(window, ID_FNAME); // get file box handle
GetWindowText(file_name_box, filename, MAXLETTERS); // get file name from file box
// Open the input file, for reading
infile = fopen( filename , "r");
if (!infile)
{
SetWindowText(file_name_box, "ERROR! Please Select A File First"); // signal if file does not exist
return( -1 );
}
// Read-in image information from the input file
fscanf(infile,"%s", imgformat);
fscanf(infile,"%d", &imgwidth);
fscanf(infile,"%d", &imgheight);
fscanf(infile,"%d", &imgdepth);
fgetc(infile);
// Read-in the image data from the input file
for (row = 0 ; row < imgheight ; row++)
for (col = 0 ; col < imgwidth ; col++)
imgdata[row][col] = fgetc(infile);
// close the input file
fclose(infile);
return(0);
}
// Function GetFileName(): opens a file window and gets user-selected file name
void GetFileName(HWND window)
{
// Declare local variables
OPENFILENAME open_file_dialog;
char filename[ MAXLETTERS ] = "";
HWND file_name_box;
// Initialize the Open File Dialog Data Structure
ZeroMemory(&open_file_dialog, sizeof(open_file_dialog)); // is this really needed?
open_file_dialog.lStructSize = sizeof(open_file_dialog);
open_file_dialog.hwndOwner = window; // name of parent window
open_file_dialog.lpstrFile = filename; // name of file name variable
open_file_dialog.nMaxFile = MAXLETTERS; // max No of letters in file name
open_file_dialog.lpstrFilter = "pgm Files (*.pgm)\0*.pgm\0All Files (*.*)\0*.*\0"; // type
open_file_dialog.Flags = OFN_EXPLORER | OFN_FILEMUSTEXIST; // style
open_file_dialog.lpstrDefExt = "pgm"; // file extension
// Open the File dialog, get the file name from the user and process it if non-NULL
if ( GetOpenFileName(&open_file_dialog) )
{
file_name_box = GetDlgItem(window, ID_FNAME); // get file box handle
SetWindowText(file_name_box, filename); // put file name in file box
}
}
void Threshold(HWND window)
{
// Declare local variables
int col, row;
unsigned char shade;
HDC drawing_context = GetDC(window);
// Draw the pixels
for (row = 0 ; row < imgheight ; row++)
for (col = 0 ; col < imgwidth ; col++)
{
shade = imgdata[row][col];
if (shade>125)
shade = 0;
else
shade = 255;
SetPixel(drawing_context, col+50, row+50, RGB(shade, shade, shade));
}
}
//end Rotate90Degrees
//----------------------------------------------------------------------
// SECTION 3: GUI Building
//----------------------------------------------------------------------
// Function MakeControls(): builds control objects on a window
void MakeControls(HWND window)
{
// Create the Label for the file name text box
CreateWindowEx(WS_EX_STATICEDGE, "Static", "File Name:",
WS_CHILD | WS_VISIBLE,
70,650, 100, 20, window, NULL, NULL, NULL);
// Create the File Name Text box
CreateWindowEx(WS_EX_CLIENTEDGE, "Edit", NULL,
WS_CHILD | WS_VISIBLE,
180, 650, 300, 40, window, (HMENU) ID_FNAME, NULL, NULL);
// Create the Draw button
CreateWindowEx(0, "Button", "Draw", WS_CHILD | WS_VISIBLE,
500, 650, 60, 40, window, (HMENU) ID_BTTN, NULL, NULL);
}
// Function MakeMenu(): builds menu objects on a window
void MakeMenu(HWND window)
{
// Declare local variables
HMENU filemenu, subfilemenu;
HMENU imagemenu, subimagemenu;
// Create a blank file menu
filemenu = CreateMenu();
imagemenu = CreateMenu();
// Create a blank sub-menu (popup menu) for the file menu
subfilemenu = CreatePopupMenu();
subimagemenu = CreatePopupMenu();
// Place Open and Exit items onto the blank popup sub-menu
AppendMenu(subfilemenu, MF_STRING, ID_FOPEN, "&Open");
AppendMenu(subfilemenu, MF_STRING, ID_ROTATE, "&Rotate");
AppendMenu(subfilemenu, MF_STRING, ID_BLUR, "&Blur");
AppendMenu(subfilemenu, MF_STRING, ID_FLIP, "&Flip");
AppendMenu(subfilemenu, MF_STRING, ID_Sharp, "&Sharpen");
AppendMenu(subfilemenu, MF_STRING, ID_FEXIT, "&Exit");
AppendMenu(subfilemenu, MF_STRING, ID_Threshold, "&Threshold");
// Place the popup sub-menu on the file menu
AppendMenu(filemenu, MF_STRING | MF_POPUP, (UINT)subfilemenu, "&File");
// AppendMenu(imagemenu, MF_STRING | MF_POPUP, (UINT)subimagemenu, "&Image");
// Place the file menu on the Main Window of the program
SetMenu(window, filemenu);
//InsertMenu(filemenu, MF_STRING,FALSE, imagemenu);
//http://msdn.microsoft.com/en-us/library/ms647616(VS.85).aspx
}
//----------------------------------------------------------------------
// SECTION 4: Event Dispatcher
//----------------------------------------------------------------------
// Function ProcessMessages(): Specifies how to respond to user interactions
LRESULT CALLBACK ProcessMessages(HWND window, UINT message,
WPARAM wParam, LPARAM lParam)
{
switch(message)
{
case WM_CREATE: // what to do when the window is created
MakeControls( window );
MakeMenu( window );
break;
case WM_DESTROY: // what to do when the window is X-ed
PostQuitMessage(0);
break;
case WM_COMMAND: // what to do if a control was activated
switch(LOWORD( wParam))
{
case ID_FEXIT: // control was Exit submenu?
PostMessage(window, WM_CLOSE, 0, 0);
break;
case ID_FOPEN: // control was Open submenu?
GetFileName( window );
break;
case ID_BTTN: // control was Draw button?
if ( !LoadData(window) )
DrawData( window );
break;
case ID_INV: // control was Flip button?
if ( !LoadData(window) )
Inv( window );
break;
case ID_BLUR: //Control Blur submenu
Blur( window );
break;
case ID_ROTATE: //Control Rotate submenu
Rotate90Degrees(window);
break;
case ID_FLIP: //Control Flip submenu
Inv(window);
break;
case ID_Sharp:
Sharp(window);
break;
case ID_Threshold:
Threshold(window);
break;
}
default: // what to do otherwise ( default )
return DefWindowProc( window, message, wParam, lParam);
}
return( 0 );
}
//----------------------------------------------------------------------
// SECTION 5: Main Window and Application Code
//----------------------------------------------------------------------
// The main program loop starts here
int WINAPI WinMain( HINSTANCE thisprogram, HINSTANCE dummy1, LPSTR dummy2, int startmode)
{
// Define local variables
HWND mainwindow;
DWORD style;
unsigned int dflt = CW_USEDEFAULT;
MSG message;
WNDCLASSEX wc;
// Define the class for the main window
wc.hInstance = thisprogram; // what program this class applies to
wc.lpszClassName = "Main"; // the name of this class
wc.lpfnWndProc = ProcessMessages; // the message processor
wc.hIcon = LoadIcon( NULL, IDI_APPLICATION ); // the icon (large)
wc.hIconSm = NULL; // the icon (small)
wc.hCursor = LoadCursor( NULL, IDC_ARROW ); // the type of cursor
wc.hbrBackground = ( HBRUSH )( COLOR_WINDOW ); // background color
wc.cbSize = sizeof( WNDCLASSEX );
wc.style = 0; wc.cbClsExtra = 0; wc.cbWndExtra = 0; wc.lpszMenuName = NULL;
// Register this "Main" window class with the OS
RegisterClassEx( &wc );
// Define the main window's style
style = WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN;
// Create the main window
mainwindow = CreateWindowEx(0, "Main", "BIOE 241 Imager", style,
dflt, dflt, 800, 740, NULL, NULL, NULL, NULL);
// Display the main window and all of its visible children
ShowWindow( mainwindow, startmode );
// Continuously get and process messages
while (GetMessage(&message, NULL, 0, 0) > 0)
{
TranslateMessage( &message );
DispatchMessage( &message );
}
// That's It!
return( 0 );
}i know that i probably should have used some sort of 3x3 array to make the sharpen, blur, and threshold code, but i could not figure it out no matter how long i spent trying. what i really need help with is writing the save function. can anyone tell me how/where to put it inmy code? thanks