public Image(BMPFileHeader fileInfo, byte[] inputFile)
{
byteRepresentation = fileInfo.ByteRepresentation;
width = (int)fileInfo.Width;
height = (int)fileInfo.Height;
bytesPerPixel = (int)fileInfo.BitPerPixel / 8;
bytesInRow = bytesPerPixel * width;
bytes = new byte[height, bytesInRow];
int counter = 0;
for (int i = 0; i < height; i++)
{
for (int y = 0; y < bytesInRow; y++)
{
bytes[i, y] = inputFile[fileInfo.ImageOffset + counter];
counter++;
}
}
}
protected byte[] byteRepresentation; // representation of BMP header in bytes
public Image(BMPFileHeader fileInfo, FileStream inputFile)
{
byteRepresentation = fileInfo.ByteRepresentation;
width = (int)fileInfo.Width;
height = (int)fileInfo.Height;
bytesPerPixel = (int)fileInfo.BitPerPixel / 8;
bytesInRow = bytesPerPixel * width;
inputFile.Seek(fileInfo.ImageOffset, SeekOrigin.Begin);
bytes = new byte[height, bytesInRow];
for (int i = 0; i < height; i++)
{
for (int y = 0; y < bytesInRow; y++)
{
bytes[i, y] = (byte)inputFile.ReadByte();
}
}
}
static void Main(string[] args)
{
Console.WriteLine("This program applies filters to the BMP image.\n" +
"Before running the program, you must pass the following arguments to it:\n" +
"1. location of an input file\n" +
"2. name of a filter\n" +
"3. location of an output file\n" +
"You can use such filters: Median, Gauss, SobelX, SobelY, Sobel, Grey, SharrX, SharrY, Sharr, Average, Negative.\n");
if (args.Length != 3)
{
Console.WriteLine("You entered " + args.Length + " arguments(s), but you have to enter 3.\nTry again, please.");
return;
}
string[] filters = { "Median", "Gauss", "SobelX", "SobelY", "Sobel", "Grey", "SharrX", "SharrY", "Sharr", "Average", "Negative" };
FileStream inputFile;
FileStream outputFile;
byte[] temp = new byte[54];
int cointer = 0;
for (int i = 0; i < filters.Length; i++)
{
if (string.Compare(args[1], filters[i]) != 0)
{
cointer++;
}
else
{
break;
}
}
if (cointer == filters.Length)
{
Console.WriteLine("The program does not know the fitter. Try another, please.\n");
return;
}
try
{
inputFile = new FileStream(args[0], FileMode.Open, FileAccess.Read);
}
catch (ArgumentNullException)
{
Console.WriteLine("Program can not open the file. Check the path and try again, please.");
return;
}
catch (Exception e)
{
Console.WriteLine("Error occurs. Try again, please.\n" + e.Message);
return;
}
if (inputFile.Read(temp, 0, 54) != 54)
{
Console.WriteLine("The file is corrupted. Try another file, please.");
inputFile.Close();
return;
}
BMPFileHeader bmpInfo = new BMPFileHeader(temp);
if (bmpInfo.FileType != "BM")
{
Console.WriteLine("It is not a BMP file. Try another file, please.");
inputFile.Close();
return;
}
if (bmpInfo.Compression != 0)
{
Console.WriteLine("There is compression in your file. The program does not work with compression. Try another file, please.");
inputFile.Close();
return;
}
if (!(bmpInfo.BitPerPixel == 24) && !(bmpInfo.BitPerPixel == 32))
{
Console.WriteLine("The program handles with only 24 or 32 bits per pixel. In your file " +
bmpInfo.BitPerPixel + " bits per pixel. Try another file, please.");
inputFile.Close();
return;
}
try
{
outputFile = new FileStream(args[args.Length - 1], FileMode.Create, FileAccess.Write);
}
catch (ArgumentNullException)
{
Console.WriteLine("Program can not create the file. Check the path and try again, please.");
return;
}
catch (Exception e)
{
Console.WriteLine("Error occurs. Try again please.\n" + e.Message);
return;
}
if (string.Compare(args[1], "Median") == 0)
{
MedianFilter image = new MedianFilter(bmpInfo, inputFile);
image.ApplyMedianFilter();
image.WriteImage(outputFile);
}
else if (string.Compare(args[1], "Gauss") == 0)
{
GaussFilter image = new GaussFilter(bmpInfo, inputFile);
image.ApplyGaussFilter();
image.WriteImage(outputFile);
}
else if (string.Compare(args[1], "SobelX") == 0)
{
SobelFilter image = new SobelFilter(bmpInfo, inputFile);
image.ApplySobelFilter(SobelFilter.FilterType.SobelFilterX);
image.WriteImage(outputFile);
}
else if (string.Compare(args[1], "SobelY") == 0)
{
SobelFilter image = new SobelFilter(bmpInfo, inputFile);
image.ApplySobelFilter(SobelFilter.FilterType.SobelFilterY);
image.WriteImage(outputFile);
}
else if (string.Compare(args[1], "Sobel") == 0)
{
SobelFilter image = new SobelFilter(bmpInfo, inputFile);
image.ApplySobelFilter(SobelFilter.FilterType.SobelFilter);
image.WriteImage(outputFile);
}
else if (string.Compare(args[1], "SharrX") == 0)
{
SharrFilter image = new SharrFilter(bmpInfo, inputFile);
image.ApplySharrFilter(SharrFilter.FilterType.SharrFilterX);
image.WriteImage(outputFile);
}
else if (string.Compare(args[1], "SharrY") == 0)
{
SharrFilter image = new SharrFilter(bmpInfo, inputFile);
image.ApplySharrFilter(SharrFilter.FilterType.SharrFilterY);
image.WriteImage(outputFile);
}
else if (string.Compare(args[1], "Sharr") == 0)
{
SharrFilter image = new SharrFilter(bmpInfo, inputFile);
image.ApplySharrFilter(SharrFilter.FilterType.SharrFilter);
image.WriteImage(outputFile);
}
else if (string.Compare(args[1], "Average") == 0)
{
AverageFilter image = new AverageFilter(bmpInfo, inputFile);
image.ApplyAverageFilter();
image.WriteImage(outputFile);
}
else if (string.Compare(args[1], "Negative") == 0)
{
NegativeFilter image = new NegativeFilter(bmpInfo, inputFile);
image.ApplyNegativeFilter();
image.WriteImage(outputFile);
}
else if (string.Compare(args[1], "Grey") == 0)
{
GreyFilter image = new GreyFilter(bmpInfo, inputFile);
image.ApplyGreyFilter();
image.WriteImage(outputFile);
}
inputFile.Close();
outputFile.Close();
Console.WriteLine("Work has done! You may see the result at " + args[2]);
return;
}
