diff --git a/.gitignore b/.gitignore
index 7468db9..f876021 100644
--- a/.gitignore
+++ b/.gitignore
@@ -44,4 +44,5 @@ local.properties
 buck-out/
 \.buckd/
 *.keystore
-      
+
+react-native-opencv3*.tgz      
diff --git a/android/src/main/java/com/adamfreeman/rnocv3/CvInvoke.java b/android/src/main/java/com/adamfreeman/rnocv3/CvInvoke.java
index d894937..ca8438d 100644
--- a/android/src/main/java/com/adamfreeman/rnocv3/CvInvoke.java
+++ b/android/src/main/java/com/adamfreeman/rnocv3/CvInvoke.java
@@ -105,7 +105,6 @@ private static int getNumKeys(ReadableMap RM) {
     }
 
     private Object[] getObjectArr(String func, ReadableMap RM, Class[] params) {
-
         int i = 1;
         ArrayList retObjs = new ArrayList<Object>();
 
@@ -150,15 +149,29 @@ else if (param == String.class) {
            }
            else if (itsType == ReadableType.Map) {
                ReadableMap dMap = RM.getMap(paramNum);
-		       if (param == Mat.class || param == List.class) {
-                   int matIndex = dMap.getInt("matIndex");
-                   Mat dMat = (Mat)MatManager.getInstance().matAtIndex(matIndex);
-				   if (param == Mat.class) {
-                       retObjs.add(dMat);
-				   }
-				   else {
-	                   retObjs.add(Arrays.asList(dMat));
-				   }
+               if (param == Mat.class || param == List.class) {
+                   int matIndex;
+
+                   if (dMap.hasKey("listIndex")) {
+                       matIndex = dMap.getInt("listIndex");
+                       List<MatOfPoint> dList = (List<MatOfPoint>)MatManager.getInstance().matAtIndex(matIndex);
+                       
+                       if (func.equals("findContours")) {
+                           // Special case, we need to clear the list
+                           dList.clear();
+                       }
+                       
+                       retObjs.add(dList);
+                   } else {
+                       matIndex = dMap.getInt("matIndex");
+                       Mat dMat = (Mat)MatManager.getInstance().matAtIndex(matIndex);
+                       if (param == Mat.class) {
+                          retObjs.add(dMat);
+                       }
+                       else {
+                          retObjs.add(Arrays.asList(dMat));
+                       }
+                   }
 
                    // have to update the dst mat after op ...
                    // should be last mat in function parameters unless exception function
@@ -486,7 +499,7 @@ else if (in != null && matParams.containsKey(in)) {
             }
 
             if (dstMatIndex >= 0) {
-                Mat dstMat = (Mat)objects[arrMatIndex];
+                Object dstMat = objects[arrMatIndex];
                 MatManager.getInstance().setMat(dstMatIndex, dstMat);
                 result = dstMatIndex;
                 dstMatIndex = -1;
diff --git a/android/src/main/java/com/adamfreeman/rnocv3/MatManager.java b/android/src/main/java/com/adamfreeman/rnocv3/MatManager.java
index 657e949..032e939 100644
--- a/android/src/main/java/com/adamfreeman/rnocv3/MatManager.java
+++ b/android/src/main/java/com/adamfreeman/rnocv3/MatManager.java
@@ -5,13 +5,17 @@
 import com.facebook.react.bridge.ReadableMap;
 import com.facebook.react.bridge.ReadableArray;
 import com.facebook.react.bridge.WritableNativeArray;
+import com.facebook.react.bridge.WritableNativeMap;
 
 import java.util.ArrayList;
+import java.util.List;
 
 import org.opencv.core.Scalar;
 import org.opencv.core.Mat;
 import org.opencv.core.MatOfInt;
 import org.opencv.core.MatOfFloat;
+import org.opencv.core.MatOfPoint;
+import org.opencv.core.Point;
 
 import android.util.Log;
 
@@ -90,6 +94,20 @@ public static int createMatOfFloat(float lomatval, float himatval) {
         return matIndex;
     }
 
+    public static int createMatOfPoint() {
+        int matIndex = mats.size();
+        MatOfPoint matToAdd = new MatOfPoint();
+        mats.add(matToAdd);
+        return matIndex;
+    }
+
+    public static int createListOfMapOfPoint() {
+        int listIndex = mats.size();
+        List<MatOfPoint> listToAdd = new ArrayList<>();
+        mats.add(listToAdd);
+        return listIndex;
+    }
+
     public static int addMat(Object matToAdd) {
         int matIndex = mats.size();
         mats.add(matToAdd);
@@ -112,15 +130,34 @@ public static void setMat(int matIndex, Object matToSet) {
     // TODO: get this to work for different data types checking CvType
     public static WritableArray getMatData(int matIndex, int rownum, int colnum) {
         WritableArray retArr = new WritableNativeArray();
-        Mat mat = (Mat)matAtIndex(matIndex);
-		
-		if (mat.rows() > 0 && mat.cols() > 0) {
-        	float[] retFloats = new float[mat.rows() * mat.cols() * mat.channels()];
-        	mat.get(rownum, colnum, retFloats);
-        	for (float retFloat : retFloats) {
-          		retArr.pushDouble(retFloat);
-        	}
-		}
+
+        Object matObject = matAtIndex(matIndex);
+
+        if (List.class.isAssignableFrom(matObject.getClass())) {
+            List<MatOfPoint> listOfMat = (List<MatOfPoint>)matObject;
+
+            for (MatOfPoint mat : listOfMat) {
+                WritableNativeArray points = new WritableNativeArray();
+
+                for (Point point : mat.toArray()) {
+                    points.pushDouble(point.x);
+                    points.pushDouble(point.y);
+                }
+
+                retArr.pushArray(points);
+            }
+        } else {
+            Mat mat = (Mat)matObject;
+            
+            if (mat.rows() > 0 && mat.cols() > 0) {
+                float[] retFloats = new float[mat.rows() * mat.cols() * mat.channels()];
+                mat.get(rownum, colnum, retFloats);
+                for (float retFloat : retFloats) {
+                    retArr.pushDouble(retFloat);
+                }
+            }
+        }
+
         return retArr;
     }
 
diff --git a/android/src/main/java/com/adamfreeman/rnocv3/RNOpencv3Module.java b/android/src/main/java/com/adamfreeman/rnocv3/RNOpencv3Module.java
index 7899a68..7d9dd27 100644
--- a/android/src/main/java/com/adamfreeman/rnocv3/RNOpencv3Module.java
+++ b/android/src/main/java/com/adamfreeman/rnocv3/RNOpencv3Module.java
@@ -225,5 +225,19 @@ public void MatOfFloat(float lomatfloat, float himatfloat, final Promise promise
         promise.resolve(result);
     }
 	
-	
+	@ReactMethod
+    public void MatOfPoint(final Promise promise) {
+        int matIndex = MatManager.getInstance().createMatOfPoint();
+        WritableNativeMap result = new WritableNativeMap();
+        result.putInt("matIndex", matIndex);
+        promise.resolve(result);
+    }
+
+    @ReactMethod
+    public void ListOfMatOfPoint(final Promise promise) {
+        int listIndex = MatManager.getInstance().createListOfMapOfPoint();
+        WritableNativeMap result = new WritableNativeMap();
+        result.putInt("listIndex", listIndex);
+        promise.resolve(result);
+    }
 }
diff --git a/coretypes.js b/coretypes.js
index 3438bae..cd88538 100644
--- a/coretypes.js
+++ b/coretypes.js
@@ -100,28 +100,28 @@ export class CvSize {
 export class CvRect {
   constructor(top, left, width, height) {
     if (top) {
-	  this.top = top
-	}
-	else {
-	  this.top = 0.0
-	}
-	if (left) {
-	  this.left = left
-	}
-	else {
-	  this.left = 0.0
-	}
-	if (width) {
-      this.width = width
-	}
-	else {
-	  this.width = 0.0
-	}
-	if (height) {
-      this.height = height
-	}
-	else {
-	  this.height = 0.0
-	}		  	
+      this.top = top
+    }
+    else {
+      this.top = 0.0
+    }
+    if (left) {
+      this.left = left
+    }
+    else {
+      this.left = 0.0
+    }
+    if (width) {
+        this.width = width
+    }
+    else {
+      this.width = 0.0
+    }
+    if (height) {
+        this.height = height
+    }
+    else {
+      this.height = 0.0
+    }		  	
   }
-}
\ No newline at end of file
+}
diff --git a/index.js b/index.js
index fd19b7d..b90cde2 100644
--- a/index.js
+++ b/index.js
@@ -8,7 +8,7 @@ const { RNOpencv3 } = NativeModules;
 
 import { ColorConv, CvType, Imgproc, Core } from './constants';
 import { CvScalar, CvPoint, CvSize, CvRect } from './coretypes';
-import { Mat, MatOfInt, MatOfFloat, setTo, get } from './mats';
+import { Mat, MatOfInt, MatOfFloat, MatOfPoint, ListOfMatOfPoint, setTo, get } from './mats';
 import { CvImage } from './cvimage';
 import { findNodeHandle } from 'react-native';
 
@@ -255,8 +255,10 @@ export {
   Mat,
   MatOfInt,
   MatOfFloat,
+  MatOfPoint,
+  ListOfMatOfPoint,
   CvScalar,
   CvPoint,
   CvSize,
-  CvRect
+  CvRect,
 };
diff --git a/mats.js b/mats.js
index 7a09727..7644bae 100644
--- a/mats.js
+++ b/mats.js
@@ -88,3 +88,15 @@ export class MatOfFloat {
   	}
   }
 }
+
+export class MatOfPoint {
+  init = async() => {
+    return await RNOpencv3.MatOfPoint()
+  }
+}
+
+export class ListOfMatOfPoint {
+  init = async() => {
+    return await RNOpencv3.ListOfMatOfPoint()
+  }
+}