diff --git a/.gitignore b/.gitignore
index e79236b..19e8bd6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -40,6 +40,6 @@ cmake-build-debug/
 .vscode/
 
 # Created validation_test files
-validation_test/output.bpm
+validation_test/**/output.bmp
 validation_test/**/output.jpg
 validation_test/**/difference.jpg
\ No newline at end of file
diff --git a/README.md b/README.md
index f5f55d3..2cf1464 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ cmake .. && make && ./RayTracer scene.obj
 
 ## How to create a test
 Create a directory in validation_test with the name of the scene (it must match the name of the scene).
-Create test files inside the directory with the following name format: `<width>x<height>_<number_of_frame_to_render>_<difference_threshold>`
+Create test files inside the directory with the following name format: `<number_of_frame_to_render>_<difference_threshold>.jpg`
 Then, follow the next point in order to generate the test.
 
 ## How to regenerate tests
diff --git a/src/Dispatcher/Dispatcher.cc b/src/Dispatcher/Dispatcher.cc
index c6141a3..5988486 100644
--- a/src/Dispatcher/Dispatcher.cc
+++ b/src/Dispatcher/Dispatcher.cc
@@ -46,7 +46,7 @@ namespace rt {
         _threads.clear();
     }
 
-    std::vector<Color> Dispatcher::Flush() {
+    std::vector<Color> const& Dispatcher::Flush() const {
         return _image;
     }
 
diff --git a/src/Dispatcher/Dispatcher.h b/src/Dispatcher/Dispatcher.h
index eb96b76..251663f 100644
--- a/src/Dispatcher/Dispatcher.h
+++ b/src/Dispatcher/Dispatcher.h
@@ -31,7 +31,7 @@ namespace rt {
 
         void                            Start(void);
         void                            Stop(void);
-        std::vector<Color>              Flush(void);
+        std::vector<Color> const&       Flush(void) const;
         std::size_t                     GetNumberOfProcessed(void) const;
 
     private:
diff --git a/validation_test/Cube/100_100.jpg b/validation_test/Cube/100_100.jpg
new file mode 100644
index 0000000..acea3ab
Binary files /dev/null and b/validation_test/Cube/100_100.jpg differ
diff --git a/validation_test/Dragon/100_300.jpg b/validation_test/Dragon/100_300.jpg
new file mode 100644
index 0000000..495dad2
Binary files /dev/null and b/validation_test/Dragon/100_300.jpg differ
diff --git a/validation_test/DragonOnStandDoubleLight/100_600.jpg b/validation_test/DragonOnStandDoubleLight/100_600.jpg
new file mode 100644
index 0000000..5cdadb6
Binary files /dev/null and b/validation_test/DragonOnStandDoubleLight/100_600.jpg differ
diff --git a/validation_test/Ico/100_100.jpg b/validation_test/Ico/100_100.jpg
new file mode 100644
index 0000000..44f745b
Binary files /dev/null and b/validation_test/Ico/100_100.jpg differ
diff --git a/validation_test/regenerate.sh b/validation_test/regenerate.sh
index 23a22be..5aa082c 100755
--- a/validation_test/regenerate.sh
+++ b/validation_test/regenerate.sh
@@ -1,12 +1,13 @@
 #!/usr/bin/env bash
 
+cd ../cmake-build-debug && cmake .. && make && cd -
 echo "Launching regeneration of validation tests"
 for directory in $(ls -d */ | sed 's#/##')
 do
     for parameter in $(ls ${directory} -I output.jpg -I difference.jpg | sed -e 's/\..*$//')
     do
         echo "Launching regeneration on scene $directory with parameter ${parameter}"
-        ../cmake-build-debug/RayTracer ../scenes/${directory}.obj $(echo ${parameter} | cut -d '_' -f1) --output-image $(echo ${parameter} | cut -d '_' -f2)
-        convert output.bpm ${directory}/${parameter}.jpg
+        ../cmake-build-debug/RayTracer ../scenes/${directory}.dae --output-image=$(echo ${parameter} | cut -d '_' -f1)
+        convert -quality 100% output.bmp ${directory}/${parameter}.jpg
     done
 done
\ No newline at end of file
diff --git a/validation_test/test.sh b/validation_test/test.sh
index e4ec049..e846fb6 100755
--- a/validation_test/test.sh
+++ b/validation_test/test.sh
@@ -1,17 +1,21 @@
 #!/usr/bin/env bash
 
+cd ../cmake-build-debug && cmake .. && make && cd -
 echo "Launching validation tests"
 status=0
 for directory in $(ls -d */ | sed 's#/##')
 do
     for test in $(ls ${directory} -I output.jpg -I difference.jpg | sed -e 's/\..*$//')
     do
+        echo
         echo "Launching test on scene $directory with test $test"
-        ../cmake-build-debug/RayTracer ../scenes/${directory}.obj $(echo ${test} | cut -d '_' -f1) --output-image $(echo ${test} | cut -d '_' -f2)
-        convert output.bpm ${directory}/output.jpg
+        ../cmake-build-debug/RayTracer ../scenes/${directory}.dae --output-image=$(echo ${test} | cut -d '_' -f1)
+        convert -quality 100% output.bmp ${directory}/output.jpg
         diff=$(compare -metric AE -fuzz 5% ${directory}/output.jpg ${directory}/${test}.jpg ${directory}/difference.jpg 2>&1)
-        if [[ ${diff} -ge $(echo ${test} | cut -d '_' -f3) ]]; then
+        if [[ ${diff} -ge $(echo ${test} | cut -d '_' -f2) ]]; then
             echo "FAIL: Too many diff for $directory/${test}: $diff"
+            echo "Uploading difference..."
+            ./upload.sh ${directory}/difference.jpg
             status=1
         else
             echo "SUCCESS: Passed ${directory}/${test}: $diff"
diff --git a/validation_test/upload.sh b/validation_test/upload.sh
new file mode 100755
index 0000000..fdce5d9
--- /dev/null
+++ b/validation_test/upload.sh
@@ -0,0 +1,118 @@
+#!/bin/bash
+
+# Imgur script by Bart Nagel <bart@tremby.net>
+# Improvements by Tino Sino <robottinosino@gmail.com>
+# Version 6 or more
+# I release this into the public domain. Do with it what you will.
+# The latest version can be found at https://github.com/tremby/imgur.sh
+
+# API Key provided by Bart;
+# replace with your own or specify yours as IMGUR_CLIENT_ID envionment variable
+# to avoid limits
+default_client_id=c9a6efb3d7932fd
+client_id="${IMGUR_CLIENT_ID:=$default_client_id}"
+
+# Function to output usage instructions
+function usage {
+	echo "Usage: $(basename $0) [<filename|URL> [...]]" >&2
+	echo
+	echo "Upload images to imgur and output their new URLs to stdout. Each one's" >&2
+	echo "delete page is output to stderr between the view URLs." >&2
+	echo
+	echo "A filename can be - to read from stdin. If no filename is given, stdin is read." >&2
+	echo
+	echo "If xsel, xclip, or pbcopy is available, the URLs are put on the X selection for" >&2
+	echo "easy pasting." >&2
+}
+
+# Function to upload a path
+# First argument should be a content spec understood by curl's -F option
+function upload {
+	curl -s -H "Authorization: Client-ID $client_id" -H "Expect: " -F "image=$1" https://api.imgur.com/3/image.xml
+	# The "Expect: " header is to get around a problem when using this through
+	# the Squid proxy. Not sure if it's a Squid bug or what.
+}
+
+# Check arguments
+if [ "$1" == "-h" -o "$1" == "--help" ]; then
+	usage
+	exit 0
+elif [ $# -eq 0 ]; then
+	echo "No file specified; reading from stdin" >&2
+	exec "$0" -
+fi
+
+# Check curl is available
+type curl &>/dev/null || {
+	echo "Couldn't find curl, which is required." >&2
+	exit 17
+}
+
+clip=""
+errors=false
+
+# Loop through arguments
+while [ $# -gt 0 ]; do
+	file="$1"
+	shift
+
+	# Upload the image
+	if [[ "$file" =~ ^https?:// ]]; then
+		# URL -> imgur
+		response=$(upload "$file") 2>/dev/null
+	else
+		# File -> imgur
+		# Check file exists
+		if [ "$file" != "-" -a ! -f "$file" ]; then
+			echo "File '$file' doesn't exist; skipping" >&2
+			errors=true
+			continue
+		fi
+		response=$(upload "@$file") 2>/dev/null
+	fi
+
+	if [ $? -ne 0 ]; then
+		echo "Upload failed" >&2
+		errors=true
+		continue
+	elif echo "$response" | grep -q 'success="0"'; then
+		echo "Error message from imgur:" >&2
+		msg="${response##*<error>}"
+		echo "${msg%%</error>*}" >&2
+		errors=true
+		continue
+	fi
+
+	# Parse the response and output our stuff
+	url="${response##*<link>}"
+	url="${url%%</link>*}"
+	delete_hash="${response##*<deletehash>}"
+	delete_hash="${delete_hash%%</deletehash>*}"
+	echo $url | sed 's/^http:/https:/'
+	echo "Delete page: https://imgur.com/delete/$delete_hash" >&2
+
+	# Append the URL to a string so we can put them all on the clipboard later
+	clip+="$url"
+	if [ $# -gt 0 ]; then
+		clip+=$'\n'
+	fi
+done
+
+# Put the URLs on the clipboard if we can
+if type pbcopy &>/dev/null; then
+	echo -n "$clip" | pbcopy
+elif [ $DISPLAY ]; then
+	if type xsel &>/dev/null; then
+		echo -n "$clip" | xsel -i
+	elif type xclip &>/dev/null; then
+		echo -n "$clip" | xclip
+	else
+		echo "Haven't copied to the clipboard: no xsel or xclip" >&2
+	fi
+else
+	echo "Haven't copied to the clipboard: no \$DISPLAY or pbcopy" >&2
+fi
+
+if $errors; then
+	exit 1
+fi
\ No newline at end of file