From 1a4cc8cb2e7ea7d5ca7bf955240bfc2e6a8df668 Mon Sep 17 00:00:00 2001
From: Mikael Brudfors <brudfors@gmail.com>
Date: Sun, 27 Mar 2022 17:38:37 +0100
Subject: [PATCH] DEFAULT: modulate affine registration tolerance

I have noticed that the initial affine registration does not properly align the template to some subject images, so that the following diffeo+affine starts in a sub-optimal alignment. Modulating the affine tolerance seems to solve this. It does increase runtime, but not by much, as if is only applied to the coarsest level of the algorithm.
---
 spm_mb_fit.m | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spm_mb_fit.m b/spm_mb_fit.m
index 5aa585b..38847a1 100644
--- a/spm_mb_fit.m
+++ b/spm_mb_fit.m
@@ -107,7 +107,7 @@
     % Finished rigid alignment?
     % Note that for limited field of view templates, the objective
     % function can increase as well as decrease.
-    if it0>12 && abs(oE-E/nvox(dat)) < sett.tol*2
+    if it0>12 && abs(oE-E/nvox(dat)) < sett.tol*1e-1*0.5
         countdown = countdown - 1;
         if countdown==0
             break;