From e2916a255ef3618e8943972b91e2d5770f1429b4 Mon Sep 17 00:00:00 2001
From: Fabien Servant <fabien.servant@technicolor.com>
Date: Thu, 10 Oct 2024 18:16:27 +0200
Subject: [PATCH] Fix applyCalibration logic for isDesqueezed

---
 src/software/utils/main_applyCalibration.cpp | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/software/utils/main_applyCalibration.cpp b/src/software/utils/main_applyCalibration.cpp
index 6983b3a179..bb70ca14f9 100644
--- a/src/software/utils/main_applyCalibration.cpp
+++ b/src/software/utils/main_applyCalibration.cpp
@@ -274,18 +274,20 @@ bool applyJson(sfmData::SfMData & sfmData, boost::json::value & input)
     double w = intrinsic->w();
     double h = intrinsic->h();
     double nh = h / pixelAspect;
-    double ratio = w / nh;
+    double ratio = w / h;
     double ratioDesqueezed = w / nh;
-    double iratio = filmbackWidth / filmbackHeight;
+    double filmratio = filmbackWidth / filmbackHeight;
+
+    bool hasSpecialPixelAspect = (std::abs(pixelAspect - 1.0) > 1e-4);
 
     //Compare image size ratio and filmback size ratio
     bool isDesqueezed = false;
-    if (std::abs(ratioDesqueezed - iratio) < 1e-2)
+    if ((std::abs(ratio - filmratio) < 1e-2) && hasSpecialPixelAspect)
     {
         ALICEVISION_LOG_INFO("Input image look desqueezed");
         isDesqueezed = true;
     }
-    else if (std::abs(ratio - iratio) > 1e-2)
+    else if (std::abs(ratioDesqueezed - filmratio) > 1e-2)
     {
         ALICEVISION_LOG_ERROR("Incompatible image ratios");
         return false;