From 228bb868ee769287ce500ae9a837141658a9dd13 Mon Sep 17 00:00:00 2001
From: Martin Garbade <garbade.work@gmail.com>
Date: Mon, 24 Jan 2022 12:36:42 +0100
Subject: [PATCH] fix: cannot invert matrix if ROI is 0

---
 mediapipe/calculators/tensor/image_to_tensor_utils.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mediapipe/calculators/tensor/image_to_tensor_utils.cc b/mediapipe/calculators/tensor/image_to_tensor_utils.cc
index 6b3bf08cd..d1802f0be 100644
--- a/mediapipe/calculators/tensor/image_to_tensor_utils.cc
+++ b/mediapipe/calculators/tensor/image_to_tensor_utils.cc
@@ -24,7 +24,8 @@ namespace mediapipe {
 
 RotatedRect GetRoi(int input_width, int input_height,
                    absl::optional<mediapipe::NormalizedRect> norm_rect) {
-  if (norm_rect) {
+            
+  if (norm_rect && norm_rect->width() * input_width >= 2 && norm_rect->height() * input_height >= 2) {
     return {/*center_x=*/norm_rect->x_center() * input_width,
             /*center_y =*/norm_rect->y_center() * input_height,
             /*width =*/norm_rect->width() * input_width,