public IplImage correctGamma(IplImage img) {
// get image intensity
// img.applyGamma(d);
IplImage gray = cvCreateImage(cvGetSize(img), IPL_DEPTH_8U, 1);
cvCvtColor(img, gray, CV_RGB2GRAY);
BufferedImage buffImg = img.getBufferedImage();
BufferedImage buffGray = gray.getBufferedImage();
double grayArr[] = new double[gray.width() * gray.height()];
int counter = 0;
for (int i = 0; i < gray.width(); i++) {
for (int j = 0; j < gray.height(); j++) {
grayArr[counter] = buffGray.getRGB(i, j);
counter++;
}
}
double imgSd = new StandardDeviation().evaluate(grayArr);
double imgMean = new Mean().evaluate(grayArr);
double y = 0;
if (imgMean > 0.5) y = 1 + (Math.abs(0.5 - imgMean) / imgSd);
else y = 1 / (1 + (Math.abs(0.5 - imgMean) / imgSd));
img.applyGamma(y);
return img;
}
/**
* Receives frame and uses face recognition algorithms to set coordinates of faces
*
* @param originalImage
* @return list of integer arrays, with coordinates and size of faces
*/
public static List<Integer[]> detect(IplImage originalImage) {
List<Integer[]> facesList = new ArrayList<Integer[]>();
IplImage grayImage =
IplImage.create(originalImage.width(), originalImage.height(), IPL_DEPTH_8U, 1);
cvCvtColor(originalImage, grayImage, CV_BGR2GRAY);
CvMemStorage storage = CvMemStorage.create();
opencv_objdetect.CvHaarClassifierCascade cascade =
new opencv_objdetect.CvHaarClassifierCascade(cvLoad(CASCADE_FILE));
CvSeq faces = cvHaarDetectObjects(grayImage, cascade, storage, 1.1, 1, 0);
Integer[] coordinates = null;
for (int i = 0; i < faces.total(); i++) {
CvRect r = new CvRect(cvGetSeqElem(faces, i));
coordinates = new Integer[4];
coordinates[0] = r.x();
coordinates[1] = r.y();
coordinates[2] = r.height();
coordinates[3] = r.width();
facesList.add(coordinates);
}
return facesList;
}
public Histogram(IplImage img) {
hist = new int[256];
// calculate absolute values
for (int i = 0; i < img.height(); i++) {
for (int j = 0; j < img.width(); j++) {
int val = (int) cvGetReal2D(img, i, j);
hist[val]++;
}
}
}
public void generatePGMFromPic(String srcPath, String file, String destPath) throws Exception {
String srcFilePath = srcPath + "/" + file;
System.out.println("Loading image from " + srcFilePath);
IplImage origImg = cvLoadImage(srcFilePath);
// convert to grayscale
IplImage grayImg = IplImage.create(origImg.width(), origImg.height(), IPL_DEPTH_8U, 1);
cvCvtColor(origImg, grayImg, CV_BGR2GRAY);
// scale the grayscale (to speed up face detection)
IplImage smallImg =
IplImage.create(grayImg.width() / SCALE, grayImg.height() / SCALE, IPL_DEPTH_8U, 1);
cvResize(grayImg, smallImg, CV_INTER_LINEAR);
// equalize the small grayscale
IplImage equImg = IplImage.create(smallImg.width(), smallImg.height(), IPL_DEPTH_8U, 1);
cvEqualizeHist(smallImg, equImg);
CvMemStorage storage = CvMemStorage.create();
CvHaarClassifierCascade cascade = new CvHaarClassifierCascade(cvLoad(CASCADE_FILE));
System.out.println("Detecting faces...");
CvSeq faces = cvHaarDetectObjects(equImg, cascade, storage, 1.1, 3, CV_HAAR_DO_CANNY_PRUNING);
cvClearMemStorage(storage);
int total = faces.total();
System.out.println("Found " + total + " face(s)");
for (int i = 0; i < total; i++) {
CvRect r = new CvRect(cvGetSeqElem(faces, i));
cvSetImageROI(
origImg, cvRect(r.x() * SCALE, r.y() * SCALE, r.width() * SCALE, r.height() * SCALE));
IplImage origface = cvCreateImage(cvSize(r.width() * SCALE, r.height() * SCALE), 8, 3);
IplImage smallface = cvCreateImage(cvSize(120, 120), 8, 3);
cvCopy(origImg, origface);
cvResize(origface, smallface, CV_INTER_LINEAR);
cvSaveImage(destPath + "/" + file + i + ".pgm", smallface);
cvResetImageROI(origImg);
}
}
public boolean record(IplImage image, int pixelFormat) throws Exception {
if (video_st == null) {
throw new Exception(
"No video output stream (Is imageWidth > 0 && imageHeight > 0 and has start() been called?)");
}
int ret;
if (image == null) {
/* no more frame to compress. The codec has a latency of a few
frames if using B frames, so we get the last frames by
passing the same picture again */
} else {
int width = image.width();
int height = image.height();
int step = image.widthStep();
BytePointer data = image.imageData();
if (pixelFormat == AV_PIX_FMT_NONE) {
int depth = image.depth();
int channels = image.nChannels();
if ((depth == IPL_DEPTH_8U || depth == IPL_DEPTH_8S) && channels == 3) {
pixelFormat = AV_PIX_FMT_BGR24;
} else if ((depth == IPL_DEPTH_8U || depth == IPL_DEPTH_8S) && channels == 1) {
pixelFormat = AV_PIX_FMT_GRAY8;
} else if ((depth == IPL_DEPTH_16U || depth == IPL_DEPTH_16S) && channels == 1) {
pixelFormat = AV_HAVE_BIGENDIAN() ? AV_PIX_FMT_GRAY16BE : AV_PIX_FMT_GRAY16LE;
} else if ((depth == IPL_DEPTH_8U || depth == IPL_DEPTH_8S) && channels == 4) {
pixelFormat = AV_PIX_FMT_RGBA;
} else if ((depth == IPL_DEPTH_8U || depth == IPL_DEPTH_8S) && channels == 2) {
pixelFormat = AV_PIX_FMT_NV21; // Android's camera capture format
step = width;
} else {
throw new Exception(
"Could not guess pixel format of image: depth=" + depth + ", channels=" + channels);
}
}
if (video_c.pix_fmt() != pixelFormat
|| video_c.width() != width
|| video_c.height() != height) {
/* convert to the codec pixel format if needed */
img_convert_ctx =
sws_getCachedContext(
img_convert_ctx,
width,
height,
pixelFormat,
video_c.width(),
video_c.height(),
video_c.pix_fmt(),
SWS_BILINEAR,
null,
null,
null);
if (img_convert_ctx == null) {
throw new Exception(
"sws_getCachedContext() error: Cannot initialize the conversion context.");
}
avpicture_fill(tmp_picture, data, pixelFormat, width, height);
avpicture_fill(picture, picture_buf, video_c.pix_fmt(), video_c.width(), video_c.height());
tmp_picture.linesize(0, step);
sws_scale(
img_convert_ctx,
new PointerPointer(tmp_picture),
tmp_picture.linesize(),
0,
height,
new PointerPointer(picture),
picture.linesize());
} else {
avpicture_fill(picture, data, pixelFormat, width, height);
picture.linesize(0, step);
}
}
if ((oformat.flags() & AVFMT_RAWPICTURE) != 0) {
if (image == null) {
return false;
}
/* raw video case. The API may change slightly in the future for that? */
av_init_packet(video_pkt);
video_pkt.flags(video_pkt.flags() | AV_PKT_FLAG_KEY);
video_pkt.stream_index(video_st.index());
video_pkt.data(new BytePointer(picture));
video_pkt.size(Loader.sizeof(AVPicture.class));
} else {
/* encode the image */
av_init_packet(video_pkt);
video_pkt.data(video_outbuf);
video_pkt.size(video_outbuf_size);
picture.quality(video_c.global_quality());
if ((ret =
avcodec_encode_video2(
video_c, video_pkt, image == null ? null : picture, got_video_packet))
< 0) {
throw new Exception(
"avcodec_encode_video2() error " + ret + ": Could not encode video packet.");
}
picture.pts(picture.pts() + 1); // magic required by libx264
/* if zero size, it means the image was buffered */
if (got_video_packet[0] != 0) {
if (video_pkt.pts() != AV_NOPTS_VALUE) {
video_pkt.pts(av_rescale_q(video_pkt.pts(), video_c.time_base(), video_st.time_base()));
}
if (video_pkt.dts() != AV_NOPTS_VALUE) {
video_pkt.dts(av_rescale_q(video_pkt.dts(), video_c.time_base(), video_st.time_base()));
}
video_pkt.stream_index(video_st.index());
} else {
return false;
}
}
synchronized (oc) {
/* write the compressed frame in the media file */
if (interleaved && audio_st != null) {
if ((ret = av_interleaved_write_frame(oc, video_pkt)) < 0) {
throw new Exception(
"av_interleaved_write_frame() error "
+ ret
+ " while writing interleaved video frame.");
}
} else {
if ((ret = av_write_frame(oc, video_pkt)) < 0) {
throw new Exception("av_write_frame() error " + ret + " while writing video frame.");
}
}
}
return picture.key_frame() != 0;
}
public static void main(String[] args)
throws IOException, InterruptedException, IM4JavaException,
PdfException { // is - is the inputstream of the pdf file
System.out.println("inside grader");
// required debugging code
Mongo m = new Mongo();
DB db = m.getDB("ecomm_database");
DBCollection coll = db.getCollection("testschemas");
ObjectMapper mapper = new ObjectMapper();
// String message = "4fda1af52f910cc6200000d3"; //test id, that i will have in the real version
String message = "500bb8811a316fda2400003b"; // id of second test
DBObject TestObject =
coll.findOne(new BasicDBObject("_id", new ObjectId(message))); // the actual mongo query
System.out.println("Test Object = " + TestObject);
JsonNode rootNode = mapper.readValue(TestObject.toString().getBytes("UTF-8"), JsonNode.class);
JsonNode TestAnswerSheet = rootNode.get("TestAnswerSheet"); // TestAnswerSheet
JsonNode Questions = rootNode.get("Questions");
System.out.println("size of Questions = " + Questions.size());
int numofquestions = Questions.size();
System.out.println("size of answers = " + TestAnswerSheet.size());
int numofstudents =
rootNode.get("NumberOfStudents").getIntValue(); // grab the number of students
System.out.println("Numer of students = " + numofstudents);
// FillScore(Questions);
// for(int x = 0; x < Answers.size(); x++){
//
// int IDS = Answers.get(x).get("IDS").getIntValue(); //grab the question
// String QID = new String(Answers.get(x).get("IDS").getTextValue()); //grab the question
// System.out.println("IDS = " + QID );
//
// }//end of grade results
// JFrame frame = new JFrame(); //window popup //for debuggin
// reading in file
// File PDF_file = new File("/Users/angellopozo/Documents/TestImages/PDF_CRICLEV2.pdf");
/*
*
* Start of real code
*
*/
// //workign with jpedal, will read from inputstream
// PdfDecoder decode_pdf = new PdfDecoder(true);
// try{
//// decode_pdf.openPdfFileFromInputStream(is,true); //file
// decode_pdf.openPdfFile("/Users/angellopozo/Dropbox/My
// Code/java/MainRabbitMongo/Resources/CreatedPDF_Mongo_Test.pdf"); ///DEUG LINE
//// BufferedImage img = decode_pdf.getPageAsImage(1);
//// decode_pdf.closePdfFile();
//// File fileToSave = new File("/Users/angellopozo/Dropbox/My
// Code/java/MainRabbitMongo/src/main/java/RPC/jpedalRPCTEST1.jpg");
//// ImageIO.write(img, "jpg", fileToSave);
//// JFrame frame = new JFrame("jpedal buffered image");
//// Panel panel = new Panel();
//// frame.getContentPane().add(new JLabel(new ImageIcon(img)));
//// frame.pack();
////// frame.setLocationRelativeTo(null);
//// frame.setVisible(true);
// PdfFileInformation fileinfo = decode_pdf.getFileInformationData();
// String[] Fnames = fileinfo.getFieldValues();
// for(int i = 0 ; i < Fnames.length; i++){
// System.out.println("fname info = " + Fnames[i]);
// }
// System.out.println("xml data = " + fileinfo.getFileXMLMetaData());
// System.out.println("name of the input stream file = " + decode_pdf.getFileName());
// }
// catch(PdfException e) {
// e.printStackTrace();//return back and do the rpc to the user ... use return and check
// returns?
//
// }
// File PDF_file = new File("/Users/angellopozo/Dropbox/My
// Code/java/MainRabbitMongo/Resources/CreatedPDF_TestMongo_Graded.pdf"); //to large, need to do
// some scaling
// File PDF_file = new File("/Users/angellopozo/Dropbox/My
// Code/java/MainRabbitMongo/Resources/CreatedPDF_Mongo_Test_Inputs.pdf"); //working
// File PDF_file = new File("/Users/angellopozo/Dropbox/My
// Code/java/MainRabbitMongo/Resources/CreatedPDF_Mongo_Grade_Random.pdf");
// File PDF_file = new File("/Users/angellopozo/Dropbox/My
// Code/java/MainRabbitMongo/Resources/CreatedPDF_TestMongo_Graded_Vsmaller.pdf");
File PDF_file =
new File(
"/Users/angellopozo/Dropbox/My Code/java/MainRabbitMongo/Resources/CreatedPDF_Mongo_Random_withScore_testnum2_Grade_LARGE.pdf");
// File PDF_file = new File("/Users/angellopozo/Dropbox/My
// Code/java/MainRabbitMongo/Resources/CreatedPDF_Mongo_Random_withScore_testnum2_Grade_LARGE_MISTAKES_doubles.pdf");
// File PDF_file = new File("/Users/angellopozo/Dropbox/My
// Code/java/MainRabbitMongo/Resources/CreatedPDF_Mongo_Random_withScore_testnum2_Grade_LARGE_MISTAKES_noreply.pdf");
// just testing. I get a bufferedImageLuminanceSource.java.39 -> grabbing image file dimentions.
// PdfDecoder decode_pdf = new PdfDecoder(true);
// decode_pdf.openPdfFile("/Users/angellopozo/Dropbox/My
// Code/java/MainRabbitMongo/Resources/CreatedPDF_Mongo_Grade_Random.pdf");
// int numpages = decode_pdf.getPageCount();
PDDocument doc = PDDocument.load(PDF_file); // used to get page numbers
int numpages = doc.getNumberOfPages(); // get page numbers for for loop
int[] CorrectlyAnswered = new int[Questions.size()]; // number of correct answers
int[] IncorrectlyAnswered =
new int[Questions.size()]; // number of incorrectly answered responses
byStudent bystudent =
new byStudent(
numofquestions,
numofstudents); // create grading instance //Initialize with number of students
byQuestion byquestion = new byQuestion(numofquestions, numofstudents);
System.out.println("result size = " + CorrectlyAnswered.length);
// need to fill the score array in byquestions
for (int i = 0; i < Questions.size(); i++) {
// System.out.println("Score for this question = " +
// Questions.get(i).get("Score").getDoubleValue());
byquestion.ScoreDefault[i] = Questions.get(i).get("Score").getDoubleValue();
} // end of filling score array in byquestion
// int numpages = decode_pdf.getPageCount(); //get page numbers for for loop
System.out.println(
"number of pages = "
+ numpages); // check to make sure the number of pages is reasonable, dont want this to
// be too large call Db and return
System.out.println("____________________________________");
// JFrame frame = new JFrame(); //window popup
// ArrayList Results = new ArrayList(); //Array of the answer locations
// ArrayList WA = new ArrayList(); //array of wrong answers that were selected by the students
// ArrayList SR = new ArrayList(); //holding accumulated data below. selected answers array
int numoffails = 0;
int Aindex = 0;
// int Qindex = 0;
int[][] Selections = new int[2][Questions.size()]; // student , question
int[][] SelectionTotal = new int[Questions.size()][4]; // question, answer selected
for (int i = 0; i < numpages; i++) { // for every page
// File PDF_file = new File("/Users/angellopozo/Documents/TestImages/PDF_CRICLEV2.pdf");
// convert page to PDF
BufferedImage PDF_img = ConvertPageToImage(PDF_file, i);
// BufferedImage PDF_img = decode_pdf.getPageAsImage(i);
// START creating luminance source
LuminanceSource lumSource = new BufferedImageLuminanceSource(PDF_img);
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(lumSource));
Reader reader = new QRCodeReader(); // create qr reader
GenericMultipleBarcodeReader multireader = new GenericMultipleBarcodeReader(reader);
Hashtable<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>();
hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
TreeMap<String, Rectangle2D> sortedBarcodeResults = new TreeMap<String, Rectangle2D>();
Result results[] = null;
try {
results = multireader.decodeMultiple(bitmap, hints);
} catch (ReaderException re) {
return;
} // end of try
// END creating luminance source
// go through each found QR Code and draw a box around it
BufferedImage outimage = PDF_img; // copy of the pdf image
Graphics2D g2 = outimage.createGraphics();
g2.setColor(Color.green);
g2.setStroke(new BasicStroke(3));
// draw boxes around the found qrcodes
int index = 0; // debug line to save images
for (Result result : results) {
System.out.println("barcode result: " + result.getText());
double x1 = result.getResultPoints()[0].getX(); // top left
double y1 = result.getResultPoints()[0].getY(); // top left
double x2 = result.getResultPoints()[1].getX(); // top right
double y2 = result.getResultPoints()[1].getY(); // top right
double x3 = result.getResultPoints()[2].getX(); // bottom left
double y3 = result.getResultPoints()[2].getY(); // bottom left
// double x4 = result.getResultPoints()[3].getX(); //bottom right (bottom right square
// location..some qr have it)
// double y4 = result.getResultPoints()[3].getY(); //bottom right (bottom right square
// location..some qr have it)
Rectangle2D rectbox = new Rectangle2D.Double(x2, y2, (x3 - x2), (y1 - y2));
// Double buffer = 10.0;//highly dependent on the size of the qrcode
// Rectangle2D rectbox = new Rectangle2D.Double(x2-buffer, y2-buffer, (x3-x2)+2*buffer,
// (y1-y2)+2*buffer);
// System.out.println("barcode location: " + x1 +" "+ y1 +" "+ x2 +" "+ y2 + " " +
// x3 +" "+ y3);
// System.out.println("barcode location: " + x3 +" "+ y3+" "+ x4+" "+ y4+"\n");// +" "+
// (x2-x1) +" "+ (y2-y1) +"\n");
sortedBarcodeResults.put(
result.getText(), rectbox); // (qrdecoded string , rectangle box in pixels)
g2.draw(rectbox); // draw box around qrcode
Rectangle2D bubblebox =
new Rectangle2D.Double(
x2 + (x3 - x2) + 15, y2 - 20, 45, (y1 - y2) + 55); // box around bubbles
g2.draw(bubblebox); // area that the bubbles exist in the image
BufferedImage subBubble =
PDF_img.getSubimage(
(int) (x2 + (x3 - x2) + 15),
(int) (y2 - 20),
45,
(int) ((y1 - y2) + 55)); // box around bubbles
IplImage ipl_subBubble = IplImage.createFrom(subBubble); // convert subimage into iplimage
IplImage ipl_subBubble_large =
cvCreateImage(
cvSize(ipl_subBubble.width() * 4, ipl_subBubble.height() * 4),
ipl_subBubble.depth(),
ipl_subBubble.nChannels());
cvResize(ipl_subBubble, ipl_subBubble_large, CV_INTER_CUBIC); // enlarge image
IplImage ipl_subBubble_gray =
cvCreateImage(
cvSize(ipl_subBubble_large.width(), ipl_subBubble_large.height()),
IPL_DEPTH_8U,
1); // create black and white version of page
// IplImage ipl_subBubble_gray = ipl_subBubble_large.clone();
if (ipl_subBubble_large.nChannels() > 1) {
cvCvtColor(ipl_subBubble_large, ipl_subBubble_gray, CV_RGB2GRAY);
} else {
// IplImage ipl_subBubble_gray = ipl_subBubble_large.clone();
}
cvThreshold(ipl_subBubble_gray, ipl_subBubble_gray, 100, 255, CV_THRESH_OTSU);
cvSmooth(ipl_subBubble_gray, ipl_subBubble_gray, CV_GAUSSIAN, 9, 9, 2, 2);
CvMemStorage circles = CvMemStorage.create();
// show bubbles, check this if no grading is working
// CanvasFrame smoothed = new CanvasFrame("gray image");
// smoothed.setDefaultCloseOperation(javax.swing.JFrame.EXIT_ON_CLOSE);
// smoothed.showImage(ipl_subBubble_gray);
CvSeq seq =
cvHoughCircles(
ipl_subBubble_gray,
circles,
CV_HOUGH_GRADIENT,
1,
50,
80,
20,
32,
(int) (ipl_subBubble_gray.height() / (7)));
Integer[][] FilledBubbles =
new Integer[4][4]; // arry holds the #of pixels seen and the y dimention of subimage
// Vector<CvPoint> centers = new Vector<CvPoint>(4);//the 4 can be seq.total()
for (int j = 0; j < seq.total(); j++) { // draw a circle around each circle found
CvPoint3D32f xyr = new CvPoint3D32f(cvGetSeqElem(seq, j));
CvPoint center = new CvPoint(Math.round(xyr.x()), Math.round(xyr.y()));
int radius = Math.round(xyr.z());
cvCircle(ipl_subBubble_large, center, 3, CvScalar.GREEN, -1, 8, 0); // center of circle
cvCircle(ipl_subBubble_large, center, radius, CvScalar.BLUE, 3, 8, 0); // outer circle
FilledBubbles[j][0] =
FindBubbleSelected(center, radius, ipl_subBubble_gray); // bubble selected area
// FilledBubbles[j][0] = 1; //here to get rid of dimensions error
FilledBubbles[j][1] = Math.round(center.x());
FilledBubbles[j][2] = Math.round(center.y());
FilledBubbles[j][3] = Math.round(radius);
// System.out.println("Filled bubble Count = "+ FilledBubbles[j]);
} // end of look for circles for
// //the algorithm may not find circles //was trying to fix an old error, solved it by
// fixing th size of the image on hte pdf to image conversion
// int anynull = anynulls(FilledBubbles);
//// System.out.println("anynull = "+ anynull);
// if(anynull == 1){
// numoffails++;
// continue; //this question, not all circles were found.
// }//end of null check //this means not all 4 circles were found
// System.out.println("filled bubbles size = " + FilledBubbles[0].length);
// System.out.println("filled bubbles size = " + FilledBubbles.length);
FilledBubbles =
SortbyYdimention(
FilledBubbles); // note to self, check for nulls because that woud be an issue....
// print out area of bubble
// for(Integer[] tp : FilledBubbles){
// System.out.println("Filled bubble Count = "+ tp[0] + " loc = "+ tp[1]);
// }
int[] selectResult =
ReturnIndexOfmax(FilledBubbles); // maxindex = the answer submitted by the student
int maxIndex = selectResult[0];
int isfound = 1;
int ismulti = 0;
if (selectResult[1] > 1
|| selectResult[2]
== 1) { // selectResult[1] = number of bubbles , selectResult[2] = no selections
// made
System.out.println("more than one bubble was selected");
// Aindex++; //index for looping through answer array //need to be
// incremented to keep data correct
// index++; //(0-number of questions) //need to be incremented to keep data
// correct
// numoffails++; //student selected too many inputs, hence trying to cheat
// and
isfound = 0;
ismulti = 1;
// continue;
} // end of slectResults[1] if
/* GRADE THE RESULTS!!! */
// TestObject =mongo query result, Aindex = question being looked at
String QID =
new String(
TestAnswerSheet.get(Aindex).get("IDS").getTextValue()); // grab the question ID
int CorrectAnswerloc =
TestAnswerSheet.get(Aindex).get("Answer").getIntValue(); // correct answer location
System.out.println("Correc answer location = " + CorrectAnswerloc);
System.out.println("IDS = " + QID + " QI = " + Aindex);
int iscorrect = 0;
if (ismulti == 1) { // if multiple selected
iscorrect = 0;
} else { // if only one input for a question is found
iscorrect = checkcorrectness(CorrectAnswerloc, maxIndex);
}
// create the student selections by question found
BasicDBObject newvals = new BasicDBObject();
String Answersnum = new String("TestAnswerSheet." + Integer.toString(Aindex));
newvals.put(Answersnum + ".found", isfound);
newvals.put(Answersnum + ".multiselect", ismulti);
// newvals.put(Answersnum + ".correct", iscorrect);
// newvals.put(Answersnum + ".selected", maxIndex);
BasicDBObject posop = new BasicDBObject("$set", newvals);
System.out.println("inc query = " + posop.toString());
coll.update(new BasicDBObject("_id", new ObjectId(message)), posop);
// System.out.println("first character = " + QID.charAt(0));
// System.out.println("last character = " + QID.charAt(2));
char stud =
QID.charAt(0); // this is the student //QID starts at 1, not at 0 hence the negative
char Q = QID.charAt(2); // this is the question
System.out.println("Student num = " + stud);
System.out.println(
"Q num = "
+ Character.getNumericValue(Q - 1)); // QID starts at 1, not at 0 hence the negative
// Aggregate information to create Test Results array
int Qint =
Aindex
% numofquestions; // Qint = the question number of the test -1(includes 0 hence the
// -1) //should be equivalent to char Q
// System.out.println("Score for this question = " +
// Questions.get(Qint).get("Score").getDoubleValue());
if (iscorrect == 1) {
System.out.println("mod result = " + Qint);
System.out.println("Question = " + Qint + " is correct = " + iscorrect);
CorrectlyAnswered[Qint] =
CorrectlyAnswered[Qint] + 1; // byquestion.IncrementCorrectlyAnswered(Qint);
byquestion.IncrementCorrectlyAnswered(Qint);
bystudent.IncrementCorrectlyAnswered(Character.getNumericValue(stud));
byquestion.InsertScore(Character.getNumericValue(stud), Qint);
} else if (iscorrect
== 0) { // wrong answer was selected // Selections // or multiple selections
System.out.println("mod result = " + Qint);
System.out.println("Question = " + Qint + " is Incorrect = " + iscorrect);
IncorrectlyAnswered[Qint] =
IncorrectlyAnswered[Qint] + 1; // byquestion.IncrementCorrectlyAnswered(Qint);
byquestion.IncrementIncorrectlyAnswered(Qint);
bystudent.IncrementIncorrectlyAnswered(Character.getNumericValue(stud));
}
byquestion.IncrementSelectedAnswer(
maxIndex, Qint); // increment the number of times a selection was made
Selections[Character.getNumericValue(stud)][Qint] = maxIndex;
SelectionTotal[Qint][maxIndex] =
SelectionTotal[Qint][maxIndex]
+ 1; // byquestion.IncrementSelectedWrongAnwer(Qint, maxIndex);
bystudent.IncrementRepliedTo(Character.getNumericValue(stud));
Aindex++; // index for looping through answer array
/* END GRADE THE RESULTS!!! */
// TestObject
// draw the red circles
CvPoint slectedcenter =
new CvPoint(
FilledBubbles[maxIndex][1].intValue(), FilledBubbles[maxIndex][2].intValue());
cvCircle(
ipl_subBubble_large,
slectedcenter,
FilledBubbles[maxIndex][3].intValue(),
CvScalar.RED,
3,
8,
0);
// saving subimages to i can debug results
// String subimagename = new String("subimage_"+i+"_"+index+".jpg");
index++; // (0-number of questions)
// cvSaveImage(subimagename,ipl_subBubble_large);
// create image window named "My Image"
// String que = new String("_for_"+ result.getText());
// final CanvasFrame canvas = new CanvasFrame("Bubbles_Found"+que);
// // request closing of the application when the image window is closed
// canvas.setDefaultCloseOperation(javax.swing.JFrame.EXIT_ON_CLOSE);
// // show image on window
// canvas.showImage(ipl_subBubble_large);
System.out.println("____________________________________");
} // end of for results loop
// end drawing boxes around each QR CODE
// //START code to display in JFRAME
// if(i == 0){
// frame.getContentPane().setLayout(new FlowLayout());
// frame.getContentPane().add(new JLabel(new ImageIcon(outimage)));
// frame.pack();
// frame.setVisible(true);
// }
// else {
//
// frame.getContentPane().add(new JLabel(new ImageIcon(outimage)));
// frame.pack();
// frame.setVisible(true);
//
// }
// //END code to display in JFRAME
} // end of for loop of pages
// putput how well teh students performed on test
for (int i = 0; i < numofstudents; i++) {
System.out.println(
"student" + i + "answered Correctly: " + bystudent.CorrectlyAnswered[i] + " Questions");
System.out.println(
"student"
+ i
+ "answered Incorrectly: "
+ bystudent.IncorrectlyAnswered[i]
+ " Questions");
System.out.println("student" + i + "answered: " + bystudent.RepliedTo[i] + " Questions");
}
// results by student and question
for (int i = 0; i < Selections.length; i++) {
for (int j = 0; j < Selections[0].length; j++) {
System.out.println("Student (" + i + "," + j + ") selected = " + Selections[i][j]);
}
}
// results by question and reply
for (int i = 0; i < SelectionTotal.length; i++) {
System.out.println(
"Selection below = "
+ byquestion.SelectedWrongAnswer_0[i]
+ " "
+ byquestion.SelectedWrongAnswer_1[i]
+ " "
+ byquestion.SelectedWrongAnswer_2[i]
+ " "
+ byquestion.SelectedCorrectAnswer[i]
+ " ");
System.out.println(
"correctly answered = " + byquestion.CorrectlyAnswered[i] + " " + CorrectlyAnswered[i]);
for (int j = 0; j < SelectionTotal[0].length; j++) {
System.out.println("Quesetion (" + i + "," + j + ") selected = " + SelectionTotal[i][j]);
}
} // end of selctiontotal for loop
byquestion.ComputePercentCorrectlyAnswered();
byquestion.ComputePercentIncorrectlyAnswered();
byquestion.ComputePercentCorrectSTD();
byquestion.ComputeMeanScoreByQuestion(); // average score for any question by question
// byquestion.ComputeMeanScoreByStudent(); //average score for any one question by student
byquestion.ComputeMeanbyQuestionSTD();
bystudent.ComputeTotalScores(
byquestion.Scoresbystudent); // compute the total scores for any student
bystudent.ComputeMeanTotalScore(byquestion.Scoresbystudent);
byTest bytest = new byTest(numofquestions, numofstudents, bystudent);
bytest.ComputeMeanScoreTest();
bytest.ComputeMeanScoreSTD();
bytest.ComputePercentCorrecltyAnswered();
bytest.ComputePercentIncorrecltyAnswered();
// create Test Results by question
ArrayList<BasicDBObject> TestResultbyQuestion =
new ArrayList<BasicDBObject>(); // Array of the answer locations
for (int j = 0; j < byquestion.CorrectlyAnswered.length; j++) {
BasicDBObject ByQuestionVals = new BasicDBObject();
ByQuestionVals.put("SelectedWrongAnswer_0", byquestion.SelectedWrongAnswer_0[j]);
ByQuestionVals.put("SelectedWrongAnswer_1", byquestion.SelectedWrongAnswer_1[j]);
ByQuestionVals.put("SelectedWrongAnswer_2", byquestion.SelectedWrongAnswer_2[j]);
ByQuestionVals.put("SelectedCorrectAnswer", byquestion.SelectedCorrectAnswer[j]);
ByQuestionVals.put("CorrectlyAnswered", byquestion.CorrectlyAnswered[j]);
ByQuestionVals.put("IncorrectlyAnswered", byquestion.IncorrectlyAnswered[j]);
ByQuestionVals.put("PercentCorrect", byquestion.PercentCorrectlyAnswered[j]);
ByQuestionVals.put("PercentIncorrect", byquestion.PercentIncorrectlyAnswered[j]);
ByQuestionVals.put("STD", byquestion.STD[j]);
ByQuestionVals.put("Mean", byquestion.ScoreMean[j]); // means score for this question
ByQuestionVals.put("_id", new ObjectId());
TestResultbyQuestion.add(ByQuestionVals); // add Rvals into the Testresultarray listarray
// System.out.println("Question " + j + " numcorrect = " + CorrectlyAnswered[j]);
}
// create Test Results by test
BasicDBObject ByTestVals = new BasicDBObject();
ByTestVals.put("Mean", bytest.ScoreMean);
ByTestVals.put("STD", bytest.ScoreSTD);
ByTestVals.put("PercentCorrect", bytest.PercentCorrectlyAnswered);
ByTestVals.put("PercentInorrect", bytest.PercentIncorrectlyAnswered);
ByTestVals.put("_id", new ObjectId());
// create graded exists
BasicDBObject TestGradedVals = new BasicDBObject();
TestGradedVals.put("WasGraded", 1);
Date now = new Date();
TestGradedVals.put("GradeOn", now);
TestGradedVals.put("_id", new ObjectId());
// create Test Results by student
ArrayList<BasicDBObject> TestResultbyStudent =
new ArrayList<BasicDBObject>(); // Array of the answers by student
for (int j = 0; j < bystudent.CorrectlyAnswered.length; j++) {
BasicDBObject ByStudentVals = new BasicDBObject();
ByStudentVals.put("CorrectlyAnswered", bystudent.CorrectlyAnswered[j]);
ByStudentVals.put("IncorrectlyAnswered", bystudent.IncorrectlyAnswered[j]);
ByStudentVals.put("RepliedTo", bystudent.RepliedTo[j]);
ByStudentVals.put("ScoreTotal", bystudent.ScoreTotal[j]);
// ByStudentVals.put("ScoreMean", bystudent.ScoreMean[j]); //this is still wrong, unless i
// want ot show the mean of score for any 1 question
ByStudentVals.put("_id", new ObjectId());
TestResultbyStudent.add(ByStudentVals); // add Rvals into the Testresultarray listarray
// System.out.println("Question " + j + " numcorrect = " + CorrectlyAnswered[j]);
}
// v1
BasicDBObject TRbyQuestions = new BasicDBObject("TRbyQuestions", TestResultbyQuestion);
BasicDBObject set = new BasicDBObject("$set", TRbyQuestions);
// System.out.println("Test result query = " + TRbyQuestions);
coll.update(new BasicDBObject("_id", new ObjectId(message)), set);
BasicDBObject TRbyTest = new BasicDBObject("TRbyTest", ByTestVals);
BasicDBObject settest = new BasicDBObject("$set", TRbyTest);
coll.update(new BasicDBObject("_id", new ObjectId(message)), settest);
BasicDBObject TestGradedobject = new BasicDBObject("TestGraded", TestGradedVals);
BasicDBObject settestgraded = new BasicDBObject("$set", TestGradedobject);
coll.update(new BasicDBObject("_id", new ObjectId(message)), settestgraded);
BasicDBObject TRbyStudent = new BasicDBObject("TRbyStudents", TestResultbyStudent);
BasicDBObject set1 = new BasicDBObject("$set", TRbyStudent);
coll.update(new BasicDBObject("_id", new ObjectId(message)), set1);
// v2
// DBObject TestObject2 = coll.findOne(new BasicDBObject("_id", new ObjectId(message))); //the
// actual mongo query
// TestObject2.put("CorrectlyAnswered", TestResultsarray);
// coll.save(TestObject2);
System.out.println("Failed to grade " + numoffails + " questions");
doc.close();
} // end of Grader
public IplImage grab() throws Exception {
if (pFormatCtx == null || pFormatCtx.isNull()) {
throw new Exception("Could not grab: No AVFormatContext. (Has start() been called?)");
}
boolean done = false;
long pts = 0;
while (!done) {
if (av_read_frame(pFormatCtx, packet) < 0) {
// throw new Exception("Could not read frame");
return null; // end of file?
}
// Is this a packet from the video stream?
if (packet.stream_index() == videoStream) {
// Decode video frame
int len = avcodec_decode_video2(pCodecCtx, pFrame, frameFinished, packet);
LongPointer opaque = new LongPointer(pFrame.opaque());
if (packet.dts() != AV_NOPTS_VALUE) {
pts = packet.dts();
} else if (!opaque.isNull() && opaque.get() != AV_NOPTS_VALUE) {
pts = opaque.get();
} else {
pts = 0;
}
AVRational time_base = pStream.time_base();
pts = 1000 * pts * time_base.num() / time_base.den();
// Did we get a video frame?
if (len > 0 && frameFinished[0] != 0) {
switch (colorMode) {
case BGR:
case GRAY:
// Deinterlace Picture
if (deinterlace) {
avpicture_deinterlace(
pFrame, pFrame, pCodecCtx.pix_fmt(), pCodecCtx.width(), pCodecCtx.height());
}
// Convert the image from its native format to RGB
sws_scale(
img_convert_ctx,
new PointerPointer(pFrame),
pFrame.linesize(),
0,
pCodecCtx.height(),
new PointerPointer(pFrameRGB),
pFrameRGB.linesize());
return_image.imageData(buffer);
return_image.widthStep(pFrameRGB.linesize(0));
break;
case RAW:
assert (pCodecCtx.width() == return_image.width()
&& pCodecCtx.height() == return_image.height());
return_image.imageData(pFrame.data(0));
return_image.widthStep(pFrame.linesize(0));
break;
default:
assert (false);
}
return_image.imageSize(return_image.height() * return_image.widthStep());
done = true;
}
}
// Free the packet that was allocated by av_read_frame
av_free_packet(packet);
}
return_image.timestamp = pts;
return return_image;
}
public IplImage scale(IplImage img, int scale) {
BufferedImage bi = resize(img.getBufferedImage(), img.width() / scale, img.height() / scale);
ImageConverter ic = new ImageConverter();
return ic.convertRGB(bi);
}
public int getHeight() {
return img.height();
}
private static int clipY(IplImage img, double y) {
return (int) Math.round(Math.min(Math.max(y, 0), img.height() - 1));
}