You can see an example of it in use here to create gigapixel textures: http://www.xrez.com/blog/photogrammetric-gigapixel-images/
Only problem we had is that each camera came flipped exactly 180 degrees from the correct orientation so maybe someone else can find that bug. We just flipped the cameras in Maya.
Here is the C# code used to extract the cameras:
- Code: Select all
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using NetServ.Net.Json;
using System.Diagnostics;
namespace json_parse
{
class Program
{
static void Main(string[] args)
{
JsonObject jsonOb;
JsonObject Joimage;
JsonObject Jor;
JsonObject Jogroup;
string json = File.ReadAllText(@"0.json");
using (JsonParser parser = new JsonParser(new StringReader(json), true))
jsonOb = parser.ParseObject();
JsonObject Jo1 = (JsonObject)jsonOb["l"];
JsonObject Jo2 = (JsonObject)Jo1.First().Value;
JsonObject Jox = (JsonObject)Jo2["x"];
string CSVoutput = "group,image,p0,p1,p2,j0,j1,j2,j3,j4,j5,j6,j7,j8,eulerX,eulerY,eulerZ\n";
foreach (string groupKey in Jox.Keys)
{
Jogroup = (JsonObject)Jox[groupKey];
Jor = (JsonObject)Jogroup["r"];
foreach (string ObKey in Jor.Keys)
{
CSVoutput += groupKey + "," + ObKey;
Joimage = (JsonObject)Jor[ObKey];
foreach (JsonNumber coord in (JsonArray)Joimage["p"])
CSVoutput += "," + coord.Value.ToString();
// start simeon's changes
//int jCount = ((JsonArray)Joimage["j"]).Count;
//JsonNumber num;
//for (int i = 0; i <= 3; i++) {
// num = (JsonNumber)((JsonArray)Joimage["j"])[i];
// CSVoutput += "," + num.Value.ToString();
//}
//for (int i = 7; i <= 8; i++) {
// num = (JsonNumber)((JsonArray)Joimage["j"])[i];
// CSVoutput += "," + num.Value.ToString();
//}
//
// end simeon's changes
foreach (JsonNumber coord in (JsonArray)Joimage["j"])
CSVoutput += "," + coord.Value.ToString();
// start simeon's euler values
// use the quat.exe <float> <float> <float>
JsonNumber qNum;
qNum = (JsonNumber)((JsonArray)Joimage["j"])[4];
double qx = qNum.Value;
qNum = (JsonNumber)((JsonArray)Joimage["j"])[5];
double qy = qNum.Value;
qNum = (JsonNumber)((JsonArray)Joimage["j"])[6];
double qz = qNum.Value;
Process p = new Process();
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.WorkingDirectory = "./";
p.StartInfo.FileName = "quat.exe";
p.StartInfo.Arguments = qx + " " + qy + " " + qz;
p.Start();
p.WaitForExit();
string eulerRot = p.StandardOutput.ReadToEnd();
CSVoutput += "," + eulerRot;
// end simeon's euler values
CSVoutput += "\n";
}
}
File.WriteAllText(@"json.csv", CSVoutput);
}
static double[] unitQuaternionToXYZEuler(double qx, double qy, double qz)
{
double qw = Math.Sqrt(qx * qx + qy * qy + qz * qz);
double[] q = { qx, qy, qz, qw };
double xRot = Degrees(Math.Atan(
(2 * (q[0] * q[3] + q[1] * q[2])) / (1 - (2 * (Math.Pow(q[2], 2) + Math.Pow(q[3], 2))))));
double yRot = Degrees(Math.Asin(
2 * (q[0] * q[2] - q[3] * q[1])));
double zRot = Degrees(Math.Atan(
(2 * (q[0] * q[1] + q[2] * q[3])) / (1 - (2 * (Math.Pow(q[1], 2) + Math.Pow(q[2], 2))))));
double[] rot = { xRot, yRot, zRot };
return rot;
}
static double Degrees(double rad)
{
return rad * (180 / Math.PI);
}
}
}
) or the ability to control the results of the workflow (which is an area where PSE is actually *much* better that Photosynth)?