/// <summary>
/// Get Roll Number.
/// Roll Number Scanning.
/// Reverse the 'roll_no' string.
/// </summary>
/// <param name="sheet"></param>
/// <param name="blobs"></param>
/// <returns></returns>
public static string get_rollno(Sheet sheet, List<BLOB> blobs)
{
string roll_no = "";
int roll_validity = 0;
int roll_index = 0;
for (int i = 0; i < 7; ++i)
{
int digit_index = 0;
Coordinate[] coor = new Coordinate[10];
coor[digit_index++] = sheet.roll[roll_index++].coordinate;
coor[digit_index++] = sheet.roll[roll_index++].coordinate;
coor[digit_index++] = sheet.roll[roll_index++].coordinate;
coor[digit_index++] = sheet.roll[roll_index++].coordinate;
coor[digit_index++] = sheet.roll[roll_index++].coordinate;
coor[digit_index++] = sheet.roll[roll_index++].coordinate;
coor[digit_index++] = sheet.roll[roll_index++].coordinate;
coor[digit_index++] = sheet.roll[roll_index++].coordinate;
coor[digit_index++] = sheet.roll[roll_index++].coordinate;
coor[digit_index++] = sheet.roll[roll_index++].coordinate;
for (int a = 0; a < 10; ++a)
{
if (scan_blobs(coor[a], blobs))
{
roll_validity++;
roll_no += Convert.ToString(a);
}
}
if (roll_validity > 1 || roll_validity == 0)
{
roll_no = "NOT_VALID";
continue;
}
roll_validity = 0;
}
char[] array = roll_no.ToCharArray();
Array.Reverse(array);
return new string(array);
}
private void Button_Click(object sender, RoutedEventArgs e)
{
// Create OpenFileDialog
Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
dlg.InitialDirectory = Worker.templates_dir;
// Set filter for file extension and default file extension
dlg.DefaultExt = ".txt";
dlg.Filter = "XML Files (*.xml)|*.xml";
// Display OpenFileDialog by calling ShowDialog method
Nullable<bool> result = dlg.ShowDialog();
string filename = "";
// Get the selected file name and display in a TextBox
if (result == true)
{
// Open document
filename = dlg.FileName;
TextBox.Text = filename;
}
Select_DPI new_window = new Select_DPI();
new_window.ShowDialog();
sheet = new Sheet(filename);
lbl_id.Content = sheet.id;
lbl_choices.Content = sheet.choice;
lbl_questions.Content = sheet.questions;
}
/// <summary>
/// Creates the sheet object which contains the coordinates of the blobs.
/// Performs scanning and validity on the recorded Choice/Numbers.
/// </summary>
/// <param name="blobs"></param>
public static char[] get_answers(Sheet sheet, List<BLOB> blobs)
{
char[] answers = new char[100]; // Array of answers.
// Scanning A choices.
CHOICE[] A = new CHOICE[100];
int ch = 0;
for (int a = 0; a < 100; ++a)
{
A[a] = sheet.choices[ch];
ch += 4;
}
for (int i = 0; i < 100; ++i)
{
if (scan_blobs(A[i].coordinate, blobs))
if (check_validity(answers[i]))
answers[i] = 'A';
else
answers[i] = '0';
}
// Scanning B choices.
CHOICE[] B = new CHOICE[100];
ch = 1;
for (int a = 0; a < 100; ++a)
{
B[a] = sheet.choices[ch];
ch += 4;
}
for (int i = 0; i < 100; ++i)
{
if (scan_blobs(B[i].coordinate, blobs))
if (check_validity(answers[i]))
answers[i] = 'B';
else
answers[i] = '0';
}
// Scanning C choices.
CHOICE[] C = new CHOICE[100];
ch = 2;
for (int a = 0; a < 100; ++a)
{
C[a] = sheet.choices[ch];
ch += 4;
}
for (int i = 0; i < 100; ++i)
{
if (scan_blobs(C[i].coordinate, blobs))
if (check_validity(answers[i]))
answers[i] = 'C';
else
answers[i] = '0';
}
// Scanning D choices.
CHOICE[] D = new CHOICE[100];
ch = 3;
for (int a = 0; a < 100; ++a)
{
D[a] = sheet.choices[ch];
ch += 4;
}
for (int i = 0; i < 100; ++i)
{
if (scan_blobs(D[i].coordinate, blobs))
if (check_validity(answers[i]))
answers[i] = 'D';
else
answers[i] = '0';
}
return answers;
}
/// <summary>
/// Question Paper Scanning.
/// Reverse the string.
/// </summary>
/// <param name="sheet"> Sheet object.</param>
/// <param name="blobs"> Detected blobs.</param>
/// <returns> Returns QP Code as a string. </returns>
public static string get_qp_code(Sheet sheet, List<BLOB> blobs)
{
string question_code = "";
int question_validity = 0;
int ques_index = 0;
for (int i = 0; i < 5; ++i)
{
int digit_index = 0;
Coordinate[] coor = new Coordinate[10];
coor[digit_index++] = sheet.qp_code[ques_index++].coordinate;
coor[digit_index++] = sheet.qp_code[ques_index++].coordinate;
coor[digit_index++] = sheet.qp_code[ques_index++].coordinate;
coor[digit_index++] = sheet.qp_code[ques_index++].coordinate;
coor[digit_index++] = sheet.qp_code[ques_index++].coordinate;
coor[digit_index++] = sheet.qp_code[ques_index++].coordinate;
coor[digit_index++] = sheet.qp_code[ques_index++].coordinate;
coor[digit_index++] = sheet.qp_code[ques_index++].coordinate;
coor[digit_index++] = sheet.qp_code[ques_index++].coordinate;
coor[digit_index++] = sheet.qp_code[ques_index++].coordinate;
for (int a = 0; a < 10; ++a)
{
if (scan_blobs(coor[a], blobs))
{
question_validity++;
question_code += Convert.ToString(a);
}
}
if (question_validity > 1 || question_validity == 0)
{
question_code = "NOT_VALID";
continue;
}
question_validity = 0;
}
char[] array = question_code.ToCharArray();
Array.Reverse(array);
return new string(array);
}
/// <summary>
/// Subject Code Scanning.
/// Reverse the string as usual.
/// </summary>
/// <param name="sheet"></param>
/// <param name="blobs"></param>
/// <returns></returns>
public static string get_subject_code (Sheet sheet, List<BLOB> blobs)
{
string subject_code = "";
int sub_validity = 0;
int sub_index = 0;
for (int i = 0; i < 4; ++i)
{
int digit_index = 0;
Coordinate[] coor = new Coordinate[10];
coor[digit_index++] = sheet.sub_code[sub_index++].coordinate;
coor[digit_index++] = sheet.sub_code[sub_index++].coordinate;
coor[digit_index++] = sheet.sub_code[sub_index++].coordinate;
coor[digit_index++] = sheet.sub_code[sub_index++].coordinate;
coor[digit_index++] = sheet.sub_code[sub_index++].coordinate;
coor[digit_index++] = sheet.sub_code[sub_index++].coordinate;
coor[digit_index++] = sheet.sub_code[sub_index++].coordinate;
coor[digit_index++] = sheet.sub_code[sub_index++].coordinate;
coor[digit_index++] = sheet.sub_code[sub_index++].coordinate;
coor[digit_index++] = sheet.sub_code[sub_index++].coordinate;
for (int a = 0; a < 10; ++a)
{
if (scan_blobs(coor[a], blobs))
{
sub_validity++;
subject_code += Convert.ToString(a);
}
}
if (sub_validity > 1 || sub_validity == 0)
{
subject_code = "NOT_VALID";
continue;
}
sub_validity = 0;
}
char[] array = subject_code.ToCharArray();
Array.Reverse(array);
return new string(array);
}
public void generate_results(Sheet sheet)
{
char[] ans = new char[100];
Thread[] thread = new Thread[4];
thread[0] = new Thread(() => { answer_key = new string(Coordinate_match.get_answers(sheet, useful)); });
thread[1] = new Thread(() => { roll_no = Coordinate_match.get_rollno(sheet, useful); });
thread[2] = new Thread(() => { qp_code = Coordinate_match.get_qp_code(sheet, useful); });
thread[3] = new Thread(() => { subject_code = Coordinate_match.get_subject_code(sheet, useful); });
for (int i = 0; i <= 3; ++i)
{
thread[i].Start();
thread[i].Join();
}
}
/// <summary>
/// Creates the sheet object which contains the coordinates of the blobs.
/// Performs scanning and validity on the recorded Choice/Numbers.
/// </summary>
/// <param name="blobs"></param>
public static char[] get_answers(Sheet sheet, List <BLOB> blobs)
{
char[] answers = new char[100]; // Array of answers.
// Scanning A choices.
CHOICE[] A = new CHOICE[100];
int ch = 0;
for (int a = 0; a < 100; ++a)
{
A[a] = sheet.choices[ch];
ch += 4;
}
for (int i = 0; i < 100; ++i)
{
if (scan_blobs(A[i].coordinate, blobs))
{
if (check_validity(answers[i]))
{
answers[i] = 'A';
}
else
{
answers[i] = '0';
}
}
}
// Scanning B choices.
CHOICE[] B = new CHOICE[100];
ch = 1;
for (int a = 0; a < 100; ++a)
{
B[a] = sheet.choices[ch];
ch += 4;
}
for (int i = 0; i < 100; ++i)
{
if (scan_blobs(B[i].coordinate, blobs))
{
if (check_validity(answers[i]))
{
answers[i] = 'B';
}
else
{
answers[i] = '0';
}
}
}
// Scanning C choices.
CHOICE[] C = new CHOICE[100];
ch = 2;
for (int a = 0; a < 100; ++a)
{
C[a] = sheet.choices[ch];
ch += 4;
}
for (int i = 0; i < 100; ++i)
{
if (scan_blobs(C[i].coordinate, blobs))
{
if (check_validity(answers[i]))
{
answers[i] = 'C';
}
else
{
answers[i] = '0';
}
}
}
// Scanning D choices.
CHOICE[] D = new CHOICE[100];
ch = 3;
for (int a = 0; a < 100; ++a)
{
D[a] = sheet.choices[ch];
ch += 4;
}
for (int i = 0; i < 100; ++i)
{
if (scan_blobs(D[i].coordinate, blobs))
{
if (check_validity(answers[i]))
{
answers[i] = 'D';
}
else
{
answers[i] = '0';
}
}
}
return(answers);
}