diff --git a/common/ROIBox.cpp b/common/ROIBox.cpp
index 156cc841..88bfb1e1 100644
--- a/common/ROIBox.cpp
+++ b/common/ROIBox.cpp
@@ -44,11 +44,11 @@ int64_t ROIBox::GetYMax() const {
 }
 
 int64_t ROIBox::GetWidth() const {
-    return x_max - x_min;
+    return x_max - x_min + 1;
 }
 
 int64_t ROIBox::GetHeight() const {
-    return y_max - y_min;
+    return y_max - y_min + 1;
 }
 
 int64_t ROIBox::GetArea() const {