protected void addImage_Click(object sender, EventArgs e)
{
DigestRaw raw = new DigestRaw();
ph_image_digest(pathName.Text, 1, 1, ref raw, 180);
Digest d = Digest.fromRaw(raw);
ulong hash = 0;
ph_dct_imagehash(pathName.Text, ref hash);
string title = imageTitle.Text;
string author = imageAuthor.Text;
if (!String.IsNullOrEmpty(title) && !String.IsNullOrEmpty(author) && !title.Equals("Enter Title...") && !author.Equals("Enter Author..."))
{
ImageFingerprint image;
if (!String.IsNullOrEmpty(d.id))
image = new ImageFingerprint(title, author, d.id.ToString(), d.coeffs, hash);
else
image = new ImageFingerprint(title, author, null, d.coeffs, hash);
if (image.insertNewImage())
addImageResult.Text = "Image successfully added. Thank you for your contribution";
else
addImageResult.Text = "Error in inserting image. Please try again later";
}
else
{
addImageResult.Text = "Please fill in the appropriate fields to add an image into our database.";
}
addImageResult.Visible = true;
}
public static Digest fromRaw(DigestRaw raw)
{
Digest d = new Digest();
d.id = raw.id;
d.coeffs = new byte[raw.size];
Marshal.Copy(raw.coeffs, d.coeffs, 0, raw.size);
return(d);
}
protected void addImage_Click(object sender, EventArgs e)
{
DigestRaw raw = new DigestRaw();
ph_image_digest(pathName.Text, 1, 1, ref raw, 180);
Digest d = Digest.fromRaw(raw);
ulong hash = 0;
ph_dct_imagehash(pathName.Text, ref hash);
string title = imageTitle.Text;
string author = imageAuthor.Text;
if (!String.IsNullOrEmpty(title) && !String.IsNullOrEmpty(author) && !title.Equals("Enter Title...") && !author.Equals("Enter Author..."))
{
ImageFingerprint image;
if (!String.IsNullOrEmpty(d.id))
{
image = new ImageFingerprint(title, author, d.id.ToString(), d.coeffs, hash);
}
else
{
image = new ImageFingerprint(title, author, null, d.coeffs, hash);
}
if (image.insertNewImage())
{
addImageResult.Text = "Image successfully added. Thank you for your contribution";
}
else
{
addImageResult.Text = "Error in inserting image. Please try again later";
}
}
else
{
addImageResult.Text = "Please fill in the appropriate fields to add an image into our database.";
}
addImageResult.Visible = true;
}
protected void scanFile_Click(object sender, EventArgs e)
{
waiting.Visible = false;
addImage.Visible = false;
imageTitle.Visible = false;
imageAuthor.Visible = false;
addImageResult.Visible = false;
if (uploadedfile.HasFile)
{
String fileName = uploadedfile.FileName;
savePath += fileName;
uploadedfile.SaveAs(savePath);
string fileExtension = Path.GetExtension(savePath);
if (fileExtension.Equals(".jpg") || fileExtension.Equals(".png"))
{
// Retrieve all fingerprint for comparison
ImageFingerprint image = new ImageFingerprint();
ArrayList fingerprint = image.retrieveAllHashes();
int pcc = 0;
ImageFingerprint matchingPictures = null;
int highestPcc = 30;
// Retrieve digest of input image for comparison
DigestRaw raw = new DigestRaw();
ph_image_digest(savePath, 1, 1, ref raw, 180);
Digest d = Digest.fromRaw(raw);
// Compare fingerprint
for (int i = 0; i < fingerprint.Count; i++)
{
// Generate a struct for comparison from database
Digest d2 = new Digest();
d2.id = ((ImageFingerprint)fingerprint[i]).getDigestId();
d2.coeffs = ((ImageFingerprint)fingerprint[i]).getDigestCoeffs();
d2.size = 40;
// Compare the results
pcc = computeSimilarities(d.coeffs, d2.coeffs);
if (pcc >= highestPcc)
{
matchingPictures = (ImageFingerprint)fingerprint[i];
highestPcc = pcc;
}
}
// Compute hash values
ulong hasha = 0;
ph_dct_imagehash(savePath, ref hasha);
if (matchingPictures == null)
{
int minHammingDistance = 20;
for (int i = 0; i < fingerprint.Count; i++)
{
// Compute Hamming Distance
int hammingDistance = computeHammingDistance(hasha, ((ImageFingerprint)fingerprint[i]).getHash());
if (hammingDistance < minHammingDistance)
{
matchingPictures = (ImageFingerprint)fingerprint[i];
minHammingDistance = hammingDistance;
}
}
if (minHammingDistance <= 10)
{
result.Text = "An image has been identified with the following information:<br/><br/>" +
"Title: <b>" + matchingPictures.getImageTitle() + "</b><br/>" +
"Author: " + matchingPictures.getImageAuthor() + "<br/>" +
"Hamming Distance: " + minHammingDistance + "<br/>";
}
else
{
result.Text = "<b>No pictures has been identified in our database.</b><br/><br/>You can contribute by adding this image into our database.";
pathName.Text = savePath;
addImage.Visible = true;
imageAuthor.Visible = true;
imageTitle.Visible = true;
imageTitle.Text = "Enter Title...";
imageAuthor.Text = "Enter Author...";
imageTitle.Attributes.Add("onfocus", "if(this.value == 'Enter Title...') this.value='';");
imageTitle.Attributes.Add("onblur", "if(this.value == '' || this.value == ' ') this.value='Enter Title...'");
imageAuthor.Attributes.Add("onfocus", "if(this.value == 'Enter Author...') this.value='';");
imageAuthor.Attributes.Add("onblur", "if(this.value == '' || this.value == ' ') this.value='Enter Author...'");
}
}
else
{
result.Text = "An image has been identified with the following information:<br/><br/>" +
"Title: <b>" + matchingPictures.getImageTitle() + "</b><br/>" +
"Author: " + matchingPictures.getImageAuthor() + "<br/>" +
"Similarities with copyrighted image: " + (highestPcc / 40.0) * 100 + " %<br/>";
}
result.Visible = true;
}
else
{
waiting.Text = "Incorrect file format has been used. Only jpg and png files will be accepted.";
waiting.Visible = true;
}
}
else
{
waiting.Text = "No file has been selected for analysis";
waiting.Visible = true;
}
}
public static extern int ph_image_digest(string file, double sigma, double gamma, ref DigestRaw digest, int N);
public static extern int ph_image_digest(string file, double sigma, double gamma, ref DigestRaw digest, int N);
public static Digest fromRaw(DigestRaw raw)
{
Digest d = new Digest();
d.id = raw.id;
d.coeffs = new byte[raw.size];
Marshal.Copy(raw.coeffs, d.coeffs, 0, raw.size);
return d;
}
protected void scanFile_Click(object sender, EventArgs e)
{
waiting.Visible = false;
addImage.Visible = false;
imageTitle.Visible = false;
imageAuthor.Visible = false;
addImageResult.Visible = false;
if (uploadedfile.HasFile)
{
String fileName = uploadedfile.FileName;
savePath += fileName;
uploadedfile.SaveAs(savePath);
string fileExtension = Path.GetExtension(savePath);
if (fileExtension.Equals(".jpg") || fileExtension.Equals(".png"))
{
// Retrieve all fingerprint for comparison
ImageFingerprint image = new ImageFingerprint();
ArrayList fingerprint = image.retrieveAllHashes();
int pcc = 0;
ImageFingerprint matchingPictures = null;
int highestPcc = 30;
// Retrieve digest of input image for comparison
DigestRaw raw = new DigestRaw();
ph_image_digest(savePath, 1, 1, ref raw, 180);
Digest d = Digest.fromRaw(raw);
// Compare fingerprint
for (int i = 0; i < fingerprint.Count; i++)
{
// Generate a struct for comparison from database
Digest d2 = new Digest();
d2.id = ((ImageFingerprint)fingerprint[i]).getDigestId();
d2.coeffs = ((ImageFingerprint)fingerprint[i]).getDigestCoeffs();
d2.size = 40;
// Compare the results
pcc = computeSimilarities(d.coeffs, d2.coeffs);
if (pcc >= highestPcc)
{
matchingPictures = (ImageFingerprint)fingerprint[i];
highestPcc = pcc;
}
}
// Compute hash values
ulong hasha = 0;
ph_dct_imagehash(savePath, ref hasha);
if (matchingPictures == null)
{
int minHammingDistance = 20;
for (int i = 0; i < fingerprint.Count; i++)
{
// Compute Hamming Distance
int hammingDistance = computeHammingDistance(hasha, ((ImageFingerprint)fingerprint[i]).getHash());
if (hammingDistance < minHammingDistance)
{
matchingPictures = (ImageFingerprint)fingerprint[i];
minHammingDistance = hammingDistance;
}
}
if (minHammingDistance <= 10)
{
result.Text = "An image has been identified with the following information:<br/><br/>" +
"Title: <b>" + matchingPictures.getImageTitle() + "</b><br/>" +
"Author: " + matchingPictures.getImageAuthor() + "<br/>" +
"Hamming Distance: " + minHammingDistance + "<br/>";
}
else
{
result.Text = "<b>No pictures has been identified in our database.</b><br/><br/>You can contribute by adding this image into our database.";
pathName.Text = savePath;
addImage.Visible = true;
imageAuthor.Visible = true;
imageTitle.Visible = true;
imageTitle.Text = "Enter Title...";
imageAuthor.Text = "Enter Author...";
imageTitle.Attributes.Add("onfocus", "if(this.value == 'Enter Title...') this.value='';");
imageTitle.Attributes.Add("onblur", "if(this.value == '' || this.value == ' ') this.value='Enter Title...'");
imageAuthor.Attributes.Add("onfocus", "if(this.value == 'Enter Author...') this.value='';");
imageAuthor.Attributes.Add("onblur", "if(this.value == '' || this.value == ' ') this.value='Enter Author...'");
}
}
else
{
result.Text = "An image has been identified with the following information:<br/><br/>" +
"Title: <b>" + matchingPictures.getImageTitle() + "</b><br/>" +
"Author: " + matchingPictures.getImageAuthor() + "<br/>" +
"Similarities with copyrighted image: " + (highestPcc / 40.0) * 100 + " %<br/>";
}
result.Visible = true;
}
else
{
waiting.Text = "Incorrect file format has been used. Only jpg and png files will be accepted.";
waiting.Visible = true;
}
}
else
{
waiting.Text = "No file has been selected for analysis";
waiting.Visible = true;
}
}
