blob: 360073191fb802370c787d96972c90f3e8f9bb99 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
#!/bin/sh
# Helper script to ease comparing the PSNR between two video files
# Copyleft 2005 by Matthias Wieser
# Copyleft 2005 by Ivo
# This file comes under GPL, see http://www.gnu.org/copyleft/gpl.html for more
# information on its licensing.
warning_frame_number () {
echo "Files have differing numbers of frames!"
echo "$FILE1 has `ls -1 ${TEMPDIR}/FILE1/*ppm | wc -l` frames,"
echo "$FILE2 has `ls -1 ${TEMPDIR}/FILE2/*ppm | wc -l` frames."
echo "Processing the first `ls -1 ${TEMPDIR}/FILE2/*ppm | wc -l` frames."
}
TEMPDIR="/tmp/psnr_video"
WORKDIR=`pwd`
OUTFILE=psnr.dat
ERRFILE=errorsum.del
exit=0
if [[ `which pnmpsnr 2> /dev/null` = "" ]]
then
echo
echo "To use this script you have to install the program \"pnmpsnr\" which is"
echo " included in the netpbm package."
echo
exit=1
fi
if [[ `which bc 2> /dev/null` = "" ]]
then
echo
echo "To use this script you have to install the GNU command line calculator \"bc\"."
echo
exit=1
fi
if [ $# -le 1 ]; then
echo
echo "Usage: `basename $0` <file1> <file2> [<frames>] [<options1>] [<options2>]"
echo
echo " <file1> and <file2> are the files for which the PSNR should be calculated."
echo " [<frames>] is the number of frames to process, starting from frame 1."
echo " [<options1>] are additional MPlayer options for <file1>."
echo " [<options2>] are additional MPlayer options for <file2>."
echo
echo " Be aware that `basename $0` needs a lot of temporary space inside /tmp/."
echo
echo "Example:"
echo " ./`basename $0` ./orig.avi ./test.avi 250 \"\" \"-vf pp=ac\""
echo
exit=1
fi
if [ "$exit" -eq 1 ]; then
exit 1
fi
FILE1=$1
FILE2=$2
LastFrame=-1
if [ $# -ge 3 ]; then
LastFrame=$3
echo
echo "Will process $LastFrame frames."
fi
if [ $# -ge 4 ]; then
FILE1_Options=$4
echo "MPlayer options for ${FILE1}: $FILE1_Options"
fi
if [ $# -ge 5 ]; then
FILE2_Options=$5
echo "MPlayer options for ${FILE2}: $FILE2_Options"
fi
mkdir -p ${TEMPDIR}/FILE1
mkdir -p ${TEMPDIR}/FILE2
### File 1
echo
echo "############## $FILE1 #################"
cd ${TEMPDIR}/FILE1
rm -f *ppm
rm -f *del
if [ $LastFrame -ge 0 ]; then
mplayer $FILE1_Options -frames $LastFrame -nosound -vo pnm ${WORKDIR}/$FILE1 > /dev/null
else
mplayer $FILE1_Options -nosound -vo pnm ${WORKDIR}/$FILE1 > /dev/null
fi
### File 2
echo
echo "############## $FILE2 #################"
cd ${TEMPDIR}/FILE2
rm -f *ppm
if [ $LastFrame -ge 0 ]; then
mplayer $FILE2_Options -frames $LastFrame -nosound -vo pnm ${WORKDIR}/$FILE2 > /dev/null
else
mplayer $FILE2_Options -nosound -vo pnm ${WORKDIR}/$FILE2 > /dev/null
fi
### PSNR
echo
echo "############## PSNR Calculation #################"
if [[ `ls -1 ${TEMPDIR}/FILE1/*ppm | wc -l` = `ls -1 ${TEMPDIR}/FILE2/*ppm | wc -l` ]]
then
echo
else
warning_frame_number
echo
fi
cd ${TEMPDIR}/FILE2
#rm ../$OUTFILE
echo "File;Y;Cb;Cr" > ../$OUTFILE
echo "0" > $ERRFILE
i=0
for FILE in `ls -1 *.ppm`
do
echo $FILE
echo -n "$FILE" >> ../$OUTFILE
echo -n ";" >> ../$OUTFILE
YCBCR=`pnmpsnr ../FILE1/$FILE $FILE 2>&1 | tail -n 3 | cut -f 3 -d ':' | \
( read Y X; read CB X; read CR X; echo "$Y;$CB;$CR;")`
Y=`echo $YCBCR | cut -f 1 -d ';'`
CB=`echo $YCBCR | cut -f 2 -d ';'`
CR=`echo $YCBCR | cut -f 3 -d ';'`
echo $YCBCR >> ../$OUTFILE
ALL=`echo "(-10)*l((e(-$Y/10*l(10))+e(-$CB/10*l(10))/4+e(-$CR/10*l(10))/4)/1.5)/l(10)" | bc -l`
echo "$ALL" >> ../$OUTFILE
ERROR=`echo "scale=30; (e(-1*$Y/10*l(10))+e(-1*$CB/10*l(10))/4+e(-1*$CR/10*l(10))/4)/1.5" | bc -l`
ERRORSUM=`cat $ERRFILE`
echo `echo "scale=30; $ERROR + $ERRORSUM" | bc -l` > $ERRFILE
i=$(($i+1))
if [[ $i = $LastFrame ]]
then
break
fi
done
ERRORSUM=`cat $ERRFILE`
PSNR=`echo "-10*l($ERRORSUM/$i)/l(10)" | bc -l`
echo "PSNR:;$PSNR" >> ../$OUTFILE
cd ..
mv $OUTFILE ${WORKDIR}/
if [[ `ls -1 ${TEMPDIR}/FILE1/*ppm | wc -l` = `ls -1 ${TEMPDIR}/FILE2/*ppm | wc -l` ]]
then
echo
else
warning_frame_number
echo
fi
cd ..
rm -r ${TEMPDIR}
echo "Created ${WORKDIR}/$OUTFILE"
echo
|
