From 162a4f56795e4933343ded1f4a4207a09dd482bd Mon Sep 17 00:00:00 2001
From: Robert Haase <haesleinhuepf@users.noreply.github.com>
Date: Tue, 11 Aug 2020 09:42:16 +0200
Subject: [PATCH] Bugfix: Co-occurrence matrices should be symmetric

Otherwise, the direction of the read-out would play a role in further processing
---
 .../ops/image/cooccurrenceMatrix/CooccurrenceMatrix3D.java     | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/main/java/net/imagej/ops/image/cooccurrenceMatrix/CooccurrenceMatrix3D.java b/src/main/java/net/imagej/ops/image/cooccurrenceMatrix/CooccurrenceMatrix3D.java
index 66e65e4690..a26e6fe3c5 100644
--- a/src/main/java/net/imagej/ops/image/cooccurrenceMatrix/CooccurrenceMatrix3D.java
+++ b/src/main/java/net/imagej/ops/image/cooccurrenceMatrix/CooccurrenceMatrix3D.java
@@ -126,7 +126,8 @@ public double[][] calculate(final IterableInterval<T> input) {
 							&& pixels[sz][sy][sx] != Integer.MAX_VALUE) {
 
 						matrix[pixels[z][y][x]][pixels[sz][sy][sx]]++;
-						nrPairs++;
+						matrix[pixels[sz][sy][sx]][pixels[z][y][x]]++;
+						nrPairs += 2;
 
 					}
 				}