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;
}
}
protected void scanAudio_Click(object sender, EventArgs e)
{
addSongResult.Visible = false;
waiting.Visible = false;
ingestFingerprint.Visible = false;
videoAuthor.Visible = false;
videoTitle.Visible = false;
if (uploadedfile.HasFile)
{
string displayedResult = "";
ArrayList listOfResults = new ArrayList();
// Upload the file to server
String fileName = uploadedfile.FileName;
savePath += fileName;
uploadedfile.SaveAs(savePath);
string fileExtension = Path.GetExtension(savePath);
if (!fileExtension.Equals(".mp3"))
{
savePath = convertVideoToAudio(fileName);
savePath = savePath.Trim();
}
SongRetrieval sr = new SongRetrieval();
sr.retrieveAllHash();
ArrayList hashValue = sr.getSongHashes();
double songLength = Math.Round((getMediaDuration(savePath) / 4) / 60, 2);
//for (int b = 0; b < (getMediaDuration(savePath) / 4 - 2); b += 30)
for (int b = 0; b < 60; b += 30)
{
// Analyze the files (input file)
string filename = savePath;
IntPtr fingerprint = getFingerPrint(filename, b, 30);
string analysisResults = Marshal.PtrToStringAnsi(fingerprint);
SongInfo song = JsonHelper.JsonDeserializer <SongInfo>(analysisResults);
double[,] clientCode = analyzeCodegen(song.code);
// Analyze input file with hashes obtained from database
double[,] masterCode = null;
ArrayList matchingEvents = new ArrayList(); //List of events that gives the greatest match (value stored is the index that gives the most number of matches)
int maxConsecutiveCount = 9;
int previousCount = 0;
int currentCount = 0;
// Identify events that matches
for (int i = 0; i < hashValue.Count; i++)
{
masterCode = analyzeCodegen(hashValue[i].ToString());
int[] comparisonResult = compareClientMasterWithoutTimeOffset(clientCode, masterCode);
currentCount = comparisonResult[1];
// Compares first criteria - Consecutive hashes
if (comparisonResult[0] == maxConsecutiveCount)
{
matchingEvents.Add(i);
}
else if (comparisonResult[0] > maxConsecutiveCount)
{
matchingEvents.Clear();
matchingEvents.Add(i);
maxConsecutiveCount = comparisonResult[0];
}
// Compares second criteria - Total count
if (matchingEvents.Count > 1)
{
if (currentCount > previousCount)
{
matchingEvents.Clear();
matchingEvents.Add(i);
}
else
{
matchingEvents.RemoveAt(1);
}
}
if (comparisonResult[0] >= maxConsecutiveCount)
{
previousCount = currentCount;
}
}
ArrayList songIdList = (ArrayList)sr.getSongIdList();
int[] songId = new int[matchingEvents.Count];
for (int i = 0; i < matchingEvents.Count; i++)
{
songId[i] = (int)songIdList[(int)matchingEvents[i]];
}
// Identify the song
string title = "Unidentified";
SongRetrieval identifiedSong = null;
for (int i = 0; i < songId.Length; i++)
{
SongRetrieval songHash = new SongRetrieval((int)songId[i], true);
if (i == 0)
{
identifiedSong = songHash.retrieveSongFromSongId();
title = identifiedSong.getSongTitle();
}
else
{
if (!title.Equals(songHash.retrieveSongFromSongId().getSongTitle()))
{
title = "Unidentified";
}
}
}
// Identifying the accuracy of the results
int accuracy = 0;
if (maxConsecutiveCount > 700)
{
accuracy = 100;
}
else if (maxConsecutiveCount > 500)
{
accuracy = 80;
}
else if (maxConsecutiveCount > 300)
{
accuracy = 50;
}
else if (maxConsecutiveCount > 100)
{
accuracy = 30;
}
else if (maxConsecutiveCount > 50)
{
accuracy = 20;
}
else if (title.Equals("Unidentified"))
{
accuracy = 0;
}
else
{
accuracy = 10;
}
// Identifying whether the identified song matches the meta data
string misc = "";
if (song.metadata.title.Equals(""))
{
misc = "This song has no file properties attached.";
}
else if (title.Equals(song.metadata.title))
{
if (accuracy < 90)
{
accuracy += 10;
}
misc = "Song identified matches file properties of the file sent for analysis.";
}
else if (title.Equals("Unidentified"))
{
misc = "Song could not be identified. This song might not exist in our database.";
}
else
{
if (accuracy <= 10)
{
accuracy -= 10;
}
if (accuracy > 50)
{
misc = "The file properties might not be labelled correctly as it does not match the song identifed by us!";
}
else
{
misc = "Song identified might not be accurate as the desired song might not be in our database or large changes has been done to the file";
}
}
displayedResult = "File Analyzed: " + fileName + "<br/><br/>File Properties<br/>============<br/>" +
"Title: " + song.metadata.title + "<br/>" +
"Album Artist: " + song.metadata.artist + "<br/>" +
"Album: " + song.metadata.release + "<br/>" +
"Length: " + songLength + " minutes<br/>" +
"Genre: " + song.metadata.genre + "<br/>" +
"Bitrate: " + song.metadata.bitrate + " kbps<br/><br/>" +
"Identification Results" + "<br/>=====================<br/>";
// If the song can be identified and the accuracy threshold is set to 20%, it will be added to be displayed as results
if (identifiedSong != null && accuracy > 20)
{
SongIdentification si = new SongIdentification(identifiedSong, accuracy, maxConsecutiveCount, misc);
listOfResults.Add(si);
}
}
string sumTitle = "";
for (int j = 0; j < listOfResults.Count; j++)
{
SongIdentification mainObj = (SongIdentification)listOfResults[j];
SongRetrieval song = mainObj.getIdentifiedSong();
if (!sumTitle.Contains(song.getSongTitle()))
{
if (!sumTitle.Equals("") && mainObj.getAccuracy() > 10)
{
sumTitle = sumTitle + ", " + song.getSongTitle();
}
else
{
sumTitle = song.getSongTitle();
}
displayedResult = displayedResult + "Title: " + song.getSongTitle() + "<br/>" +
"Album Artist: " + song.getArtistName() + "<br/>" +
"Album: " + song.getAlbumName() + "<br/>" +
"Total Matching Consecutive Hashes: " + mainObj.getMaxConsecutiveHashes() + "<br/>" +
"Accuracy Level: " + mainObj.getAccuracy() + " %<br/>" +
"Matching of File Properties: " + mainObj.getMisc() + "<br/><br/>";
}
}
if (!sumTitle.Equals(""))
{
if (fileExtension.Equals(".mp3"))
{
result.Text = "<b>File Analyzed: " + fileName + "<br/>Song Identified: " + sumTitle + "</b>";
displayedResult = displayedResult + "Conclusion<br/>=============<br/>" +
"Song Identified: " + sumTitle;
}
else
{
result.Text = "<b>File Analyzed: " + fileName + "<br/>The video consist of the following identified song: " + sumTitle + "</b>";
displayedResult = displayedResult + "Conclusion<br/>=============<br/>" +
"The video consist of the following identified song: " + sumTitle;
}
ingestFingerprint.Visible = false;
}
else
{
if (fileExtension.Equals(".mp3"))
{
result.Text = "<b>File Analyzed: " + fileName + "<br/>Song could not be identified</b><br/><br/>To contribute, you can choose to add this song into our database.";
displayedResult = displayedResult + "Title: Unidentified" + "<br/>" +
"Album Artist: Unidentified" + "<br/>" +
"Album: Unidentified" + "<br/><br/>" +
"Conclusion<br/>=========<br/>" +
"Song could not be identified";
ingestFingerprint.Visible = true;
ingestFingerprint.Enabled = true;
ingestFingerprint.Text = "Add Song";
pathName.Text = savePath;
}
else
{
// Video format - no song identified
// Extract key frames from the videos to do comparison
int totalFrames = convertVideoToKeyFrames(fileName);
string outputFile = @"C:\temp\uploads\output";
// Retrieve all fingerprint for comparison
ImageFingerprint image = new ImageFingerprint();
ArrayList fingerprint = image.retrieveAllHashes();
int pcc = 0;
ImageFingerprint matchingPictures = null;
int highestPcc = 35;
bool identified = false;
for (int i = 1; i < totalFrames; i++)
{
string fileCount = i.ToString();
while (fileCount.Count() < 3)
{
fileCount = "0" + fileCount;
}
outputFile = outputFile + fileCount + ".jpg";
// Retrieve digest of input image for comparison
IdentifyImage1.DigestRaw raw = new IdentifyImage1.DigestRaw();
IdentifyImage1.ph_image_digest(outputFile, 1, 1, ref raw, 180);
IdentifyImage1.Digest d = IdentifyImage1.Digest.fromRaw(raw);
for (int j = 0; j < fingerprint.Count; j++)
{
// Generate a struct for comparison from database
IdentifyImage1.Digest d2 = new IdentifyImage1.Digest();
d2.id = ((ImageFingerprint)fingerprint[j]).getDigestId();
d2.coeffs = ((ImageFingerprint)fingerprint[j]).getDigestCoeffs();
d2.size = 40;
// Compare the results
pcc = IdentifyImage1.computeSimilarities(d.coeffs, d2.coeffs);
if (pcc > highestPcc)
{
matchingPictures = (ImageFingerprint)fingerprint[j];
highestPcc = pcc;
}
}
if (matchingPictures == null)
{
ulong hasha = 0;
IdentifyImage1.ph_dct_imagehash(outputFile, ref hasha);
int minHammingDistance = 20;
for (int a = 0; a < fingerprint.Count; a++)
{
// Compute Hamming Distance
int hammingDistance = IdentifyImage1.computeHammingDistance(hasha, ((ImageFingerprint)fingerprint[a]).getHash());
if (hammingDistance < minHammingDistance)
{
matchingPictures = (ImageFingerprint)fingerprint[a];
minHammingDistance = hammingDistance;
}
}
if (minHammingDistance < 10)
{
identified = true;
}
}
else
{
identified = true;
}
if (identified)
{
break;
}
else
{
highestPcc = 35;
outputFile = @"C:\temp\uploads\output";
matchingPictures = null;
}
}
if (identified)
{
result.Text = "<b>File Analyzed: " + fileName + "<br/>Song in the video could not be identified but identical key frames from videos has been identified to be identical to copyrighted videos</b><br/>";
displayedResult = displayedResult + "Title: Unidentified" + "<br/>" +
"Album Artist: Unidentified" + "<br/>" +
"Album: Unidentified" + "<br/>" +
"Key Frames: Identified to be identical to copyrighted videos" + "<br/><br/>" +
"Conclusion<br/>=========<br/>" +
"Song from the video could not be identified but key frames are identified to be identical to copyrighted videos.";
}
else
{
result.Text = "<b>File Analyzed: " + fileName + "<br/>Song and key frames from video could not be identified</b>";
displayedResult = displayedResult + "Title: Unidentified" + "<br/>" +
"Album Artist: Unidentified" + "<br/>" +
"Album: Unidentified" + "<br/>" +
"Key Frames: Unidentified" + "<br/><br/>" +
"Conclusion<br/>=========<br/>" +
"Song and key frames from the video could not be identified.";
ingestFingerprint.Visible = true;
ingestFingerprint.Enabled = true;
ingestFingerprint.Text = "Add Video";
pathName.Text = savePath + ";" + totalFrames;
videoAuthor.Visible = true;
videoTitle.Visible = true;
videoTitle.Text = "Enter Title...";
videoAuthor.Text = "Enter Author...";
videoTitle.Attributes.Add("onfocus", "if(this.value == 'Enter Title...') this.value='';");
videoTitle.Attributes.Add("onblur", "if(this.value == '' || this.value == ' ') this.value='Enter Title...'");
videoAuthor.Attributes.Add("onfocus", "if(this.value == 'Enter Author...') this.value='';");
videoAuthor.Attributes.Add("onblur", "if(this.value == '' || this.value == ' ') this.value='Enter Author...'");
}
}
}
exportedResults.Text = displayedResult;
waiting.Text = "Analysis Completed!";
result.Visible = true;
exportToPdf.Enabled = true;
exportToPdf.Visible = true;
}
else
{
waiting.Visible = true;
waiting.Text = "No file has been selected for analysis";
}
}