public void TestMatToFileStorage()
{
//create a matrix m with random values
Mat m = new Mat(120, 240, DepthType.Cv8U, 1);
using (ScalarArray low = new ScalarArray(0))
using (ScalarArray high = new ScalarArray(255))
CvInvoke.Randu(m, low, high);
//Convert the random matrix m to yml format, good for matrix that contains values such as calibration, homography etc.
String mStr;
using (FileStorage fs = new FileStorage(".yml", FileStorage.Mode.Write | FileStorage.Mode.Memory))
{
fs.Write(m, "m");
mStr = fs.ReleaseAndGetString();
}
//Treat the Mat as image data and convert it to png format.
using (VectorOfByte bytes = new VectorOfByte())
{
CvInvoke.Imencode(".png", m, bytes);
byte[] rawData = bytes.ToArray();
}
}
public void TestFileStorage2()
{
Mat m = new Mat(40, 30, DepthType.Cv8U, 3);
using (ScalarArray lower = new ScalarArray(new MCvScalar(0, 0, 0)))
using (ScalarArray higher = new ScalarArray(new MCvScalar(255, 255, 255)))
CvInvoke.Randu(m, lower, higher );
int intValue = 10;
float floatValue = 213.993f;
double doubleValue = 32.314;
using (FileStorage fs = new FileStorage(".xml", FileStorage.Mode.Write | FileStorage.Mode.Memory))
{
fs.Write(m, "m");
fs.Write(intValue, "int");
fs.Write(floatValue, "float");
fs.Write(doubleValue, "double");
string s = fs.ReleaseAndGetString();
using (FileStorage fs2 = new FileStorage(s, FileStorage.Mode.Read | FileStorage.Mode.Memory))
{
using (FileNode node = fs2.GetFirstTopLevelNode())
{
Mat m2 = new Mat();
node.ReadMat(m2);
EmguAssert.IsTrue(m.Equals(m2));
}
using (FileNode node = fs2.GetNode("m"))
{
Mat m2 = new Mat();
node.ReadMat(m2);
EmguAssert.IsTrue(m.Equals(m2));
}
using (FileNode node = fs2.GetNode("int"))
{
EmguAssert.IsTrue(intValue.Equals(node.ReadInt()));
}
using (FileNode node = fs2.GetNode("float"))
{
EmguAssert.IsTrue(floatValue.Equals(node.ReadFloat()));
}
using (FileNode node = fs2.GetNode("double"))
{
EmguAssert.IsTrue(doubleValue.Equals(node.ReadDouble()));
}
}
}
}