diff --git a/src/jscanify-node.js b/src/jscanify-node.js
index 2351ee8..7dbb3de 100644
--- a/src/jscanify-node.js
+++ b/src/jscanify-node.js
@@ -187,11 +187,6 @@ class jscanify {
     );
 
     cv.imshow(canvas, warpedDst);
-    const canvasContext = canvas.getContext("2d");
-    canvasContext.save();
-    canvasContext.scale(1, -1);
-    canvasContext.drawImage(canvas, 0, -resultHeight);
-    canvasContext.restore();
 
     img.delete();
     warpedDst.delete();
@@ -222,25 +217,25 @@ class jscanify {
     for (let i = 0; i < contour.data32S.length; i += 2) {
       const point = { x: contour.data32S[i], y: contour.data32S[i + 1] };
       const dist = distance(point, center);
-      if (point.x < center.x && point.y > center.y) {
+      if (point.x < center.x && point.y < center.y) {
         // top left
         if (dist > topLeftCornerDist) {
           topLeftCorner = point;
           topLeftCornerDist = dist;
         }
-      } else if (point.x > center.x && point.y > center.y) {
+      } else if (point.x > center.x && point.y < center.y) {
         // top right
         if (dist > topRightCornerDist) {
           topRightCorner = point;
           topRightCornerDist = dist;
         }
-      } else if (point.x < center.x && point.y < center.y) {
+      } else if (point.x < center.x && point.y > center.y) {
         // bottom left
         if (dist > bottomLeftCornerDist) {
           bottomLeftCorner = point;
           bottomLeftCornerDist = dist;
         }
-      } else if (point.x > center.x && point.y < center.y) {
+      } else if (point.x > center.x && point.y > center.y) {
         // bottom right
         if (dist > bottomRightCornerDist) {
           bottomRightCorner = point;
diff --git a/src/jscanify.js b/src/jscanify.js
index 47f6706..b2c0541 100644
--- a/src/jscanify.js
+++ b/src/jscanify.js
@@ -184,11 +184,6 @@
       );
 
       cv.imshow(canvas, warpedDst);
-      const canvasContext = canvas.getContext("2d");
-      canvasContext.save()
-      canvasContext.scale(1, -1)
-      canvasContext.drawImage(canvas, 0, -resultHeight)
-      canvasContext.restore()
 
       img.delete()
       warpedDst.delete()
@@ -219,25 +214,25 @@
       for (let i = 0; i < contour.data32S.length; i += 2) {
         const point = { x: contour.data32S[i], y: contour.data32S[i + 1] };
         const dist = distance(point, center);
-        if (point.x < center.x && point.y > center.y) {
+        if (point.x < center.x && point.y < center.y) {
           // top left
           if (dist > topLeftCornerDist) {
             topLeftCorner = point;
             topLeftCornerDist = dist;
           }
-        } else if (point.x > center.x && point.y > center.y) {
+        } else if (point.x > center.x && point.y < center.y) {
           // top right
           if (dist > topRightCornerDist) {
             topRightCorner = point;
             topRightCornerDist = dist;
           }
-        } else if (point.x < center.x && point.y < center.y) {
+        } else if (point.x < center.x && point.y > center.y) {
           // bottom left
           if (dist > bottomLeftCornerDist) {
             bottomLeftCorner = point;
             bottomLeftCornerDist = dist;
           }
-        } else if (point.x > center.x && point.y < center.y) {
+        } else if (point.x > center.x && point.y > center.y) {
           // bottom right
           if (dist > bottomRightCornerDist) {
             bottomRightCorner = point;