From 570dd7ed366238e8589a0be0ffa432d641339293 Mon Sep 17 00:00:00 2001
From: Tomoyuki SADAKANE <40597344+tsadakane@users.noreply.github.com>
Date: Sat, 1 Jun 2024 10:03:16 +0900
Subject: [PATCH] Add data type check for tvDenoise to im3DDenoise

* See #533
---
 MATLAB/Utilities/im3DDenoise.m | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/MATLAB/Utilities/im3DDenoise.m b/MATLAB/Utilities/im3DDenoise.m
index 8e403c92..c678c644 100644
--- a/MATLAB/Utilities/im3DDenoise.m
+++ b/MATLAB/Utilities/im3DDenoise.m
@@ -1,6 +1,6 @@
 function [ imgO ] = im3DDenoise( img,type,varargin )
 %IMDENOISE3D removes noise of image with different methods
-%   Currentyl only TV is supported. INput arguments are the iamge, the type
+%   Currentyl only TV is supported. Input arguments are the image, the type
 %   of denoising ('TV' only now) and the parameters for the denoising,
 %   being number of iterations and hyperparameter currently available. 
 %--------------------------------------------------------------------------
@@ -39,6 +39,11 @@
     immax=max(img(:));
 
     img=img./(immax+2*eps);
+
+    % Generates an error if the data type of img is not single-precision float
+    if ~isa(img, 'single')
+        error('im3DDenoise: Input image of tvDenoise must be single precision');
+    end
     if ndims(img)==2
         imgO=tvDenoise(cat(3,img,img),hyper,iter,gpuids.devices);
         imgO=imgO(:,:,1);