public void copyMat(Mat src, Mat dest) {
int srcRows = src.rows();
int srcCols = src.cols();
int destRows = dest.rows();
int destCols = dest.cols();
for (int i = 0; i < srcRows; i++) {
for (int j = 0; j < srcCols; j++) {
double bit = src.get(i, j)[0];
dest.put(i, j, bit);
System.out.println(bit);
}
}
}
public static Mat getCCH(Mat image) {
ArrayList<MatOfPoint> contours = new ArrayList<MatOfPoint>();
Mat hierarchy = new Mat();
Imgproc.findContours(
image, contours, hierarchy, Imgproc.RETR_EXTERNAL, Imgproc.CHAIN_APPROX_NONE);
Mat chainHistogram = Mat.zeros(1, 8, CvType.CV_32F);
int n = 0;
MatOfPoint2f approxCurve = new MatOfPoint2f();
for (MatOfPoint contour : contours) {
// get the freeman chain code from the contours
int rows = contour.rows();
// System.out.println("\nrows"+rows+"\n"+contour.dump());
int direction = 7;
Mat prevPoint = contours.get(0).row(0);
n += rows - 1;
for (int i = 1; i < rows; i++) {
// get the current point
double x1 = contour.get(i - 1, 0)[1];
double y1 = contour.get(i - 1, 0)[0];
// get the second point
double x2 = contour.get(i, 0)[1];
double y2 = contour.get(i, 0)[0];
if (x2 == x1 && y2 == y1 + 1) direction = 0;
else if (x2 == x1 - 1 && y2 == y1 + 1) direction = 1;
else if (x2 == x1 - 1 && y2 == y1) direction = 2;
else if (x2 == x1 - 1 && y2 == y1 - 1) direction = 3;
else if (x2 == x1 && y2 == y1 - 1) direction = 4;
else if (x2 == x1 + 1 && y2 == y1 - 1) direction = 5;
else if (x2 == x1 + 1 && y2 == y1) direction = 6;
else if (x2 == x1 + 1 && y2 == y1 + 1) direction = 7;
else System.out.print("err");
double counter = chainHistogram.get(0, direction)[0];
chainHistogram.put(0, direction, ++counter);
System.out.print(direction);
}
}
System.out.println("\n" + chainHistogram.dump());
Scalar alpha = new Scalar(n); // the factor
Core.divide(chainHistogram, alpha, chainHistogram);
System.out.println("\nrows=" + n + " " + chainHistogram.dump());
return chainHistogram;
}
// Transform the json-type feature to mat-type
public static Mat json2mat(String json) {
JsonParser parser = new JsonParser();
JsonElement parseTree = parser.parse(json);
// Verify the input is JSON type
if (!parseTree.isJsonObject()) {
System.out.println("The input is not a JSON type...\nExiting...");
System.exit(1);
}
JsonObject jobj = parser.parse(json).getAsJsonObject();
if (jobj == null || !jobj.isJsonObject() || jobj.isJsonNull()) {
return null;
}
// Detect broken/null features
JsonElement r = jobj.get("rows");
if (r == null) {
return null;
}
int rows = jobj.get("rows").getAsInt();
int cols = jobj.get("cols").getAsInt();
int type = jobj.get("type").getAsInt();
String data = jobj.get("data").getAsString();
String[] pixs = data.split(",");
Mat descriptor = new Mat(rows, cols, type);
for (String pix : pixs) {
String[] tmp = pix.split(" ");
int r_pos = Integer.valueOf(tmp[0]);
int c_pos = Integer.valueOf(tmp[1]);
double rgb = Double.valueOf(tmp[2]);
descriptor.put(r_pos, c_pos, rgb);
}
return descriptor;
}