[Magick-bugs] comparing identical images fails
Stef Van Vlierberghe
vvl at cfmu.eurocontrol.int
Mon Jul 16 14:47:53 PDT 2007
According to http://www.imagemagick.org/Usage/compare
convert image1 image2 -compose difference -composite -normalize x: &
Is the same as :
compare image1 image2 x: &
According to my experiment, the first command yields an exact difference, while the second seems to inject
a small amount of colour distortion, as if the two .gif files were using slightly different colors.
Also, the first command yields a solid black result, while the second command yields almost white (with very
light grey shades suggesting the slightly different colors).
I am using imagemagick to check that a xwdump converted to a gif file in a test program is equal to a template,
and got to this stage because a regular file comparison fails. The identify -verbose shows that xwdump saved
the entire colourmap, including colours that are not used (not listed in the histogram), which is probably
responsible for making cmp report a difference. Perhaps this difference (which should be irrelevant) is also
responsible for the compare distortion (if it were doing some sort of normalization based on all colors in the
colormap, including the unused colors, that would explain things).
When using identify -verbose on img1.gif and img2.gif, I see the same histogram, confirming that small color
mismatches are unlikely.
I've included the output of identify -verbose of the two images, and of the two results.
vvl at lxstudy1: identify -version
identify -version
Version: ImageMagick 6.3.5 07/16/07 Q16 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2007 ImageMagick Studio LLC
vvl at lxstudy1: identify -verbose img1.gif
Image: img1.gif
Format: GIF (CompuServe graphics interchange format)
Class: PseudoClass
Geometry: 680x837+0+0
Type: Palette
Endianess: Undefined
Colorspace: RGB
Channel depth:
Red: 8-bit
Green: 8-bit
Blue: 8-bit
Channel statistics:
Red:
Min: 32 (0.12549)
Max: 255 (1)
Mean: 132.296 (0.518808)
Standard deviation: 25.4347 (0.0997441)
Green:
Min: 0 (0)
Max: 255 (1)
Mean: 132.479 (0.519525)
Standard deviation: 25.1714 (0.0987115)
Blue:
Min: 64 (0.25098)
Max: 255 (1)
Mean: 132.733 (0.52052)
Standard deviation: 25.6939 (0.10076)
Colors: 21
Histogram:
12242: ( 64, 64, 64) #404040 grey25
1418: ( 75, 75, 75) #4B4B4B rgb(75,75,75)
244: (109,109,109) #6D6D6D rgb(109,109,109)
480: ( 32,107,175) #206BAF rgb(32,107,175)
60: (120,232,120) #78E878 rgb(120,232,120)
480: ( 76,155,200) #4C9BC8 rgb(76,155,200)
900: ( 96,160,255) #60A0FF rgb(96,160,255)
60: (124,216,216) #7CD8D8 rgb(124,216,216)
60: (203,124,121) #CB7C79 rgb(203,124,121)
60: (248, 89, 84) #F85954 rgb(248,89,84)
60: (183, 0,141) #B7008D rgb(183,0,141)
60: (241,153, 80) #F19950 rgb(241,153,80)
514418: (128,128,128) #808080 fractal
60: (255,159,200) #FF9FC8 rgb(255,159,200)
15541: (200,200,200) #C8C8C8 rgb(200,200,200)
1422: (207,207,207) #CFCFCF grey81
12530: (208,208,208) #D0D0D0 rgb(208,208,208)
60: (198,222,255) #C6DEFF rgb(198,222,255)
60: (222,198,255) #DEC6FF rgb(222,198,255)
60: (255,198,198) #FFC6C6 rgb(255,198,198)
8885: (255,255,255) #FFFFFF white
Colormap: 256
0: (255,255,255) #FFFFFF white
1: ( 0, 0, 0) #000000 black
2: (126,126,126) #7E7E7E gray
3: (114,159,255) #729FFF rgb(114,159,255)
4: (193,213,255) #C1D5FF rgb(193,213,255)
5: ( 60, 84,135) #3C5487 rgb(60,84,135)
6: (168,168,168) #A8A8A8 grey66
7: (217,217,217) #D9D9D9 grey85
8: ( 89, 89, 89) #595959 grey35
9: (143,143,143) #8F8F8F grey56
10: ( 95,146,158) #5F929E rgb(95,146,158)
11: (183,206,212) #B7CED4 rgb(183,206,212)
12: ( 47, 73, 79) #2F494F rgb(47,73,79)
13: ( 81,124,134) #517C86 rgb(81,124,134)
14: ( 97,135,217) #6187D9 rgb(97,135,217)
15: (128,128,128) #808080 fractal
16: ( 0, 0, 0) #000000 black
17: (120,136,160) #7888A0 rgb(120,136,160)
18: (192,192,192) #C0C0C0 silver
19: (140,140,140) #8C8C8C grey55
20: (255,255, 0) #FFFF00 yellow
21: (255,255, 0) #FFFF00 yellow
22: (255,255, 0) #FFFF00 yellow
23: (255,255, 0) #FFFF00 yellow
24: (255, 0, 0) #FF0000 red
25: (255, 0, 0) #FF0000 red
26: (255, 0, 0) #FF0000 red
27: (255, 0, 0) #FF0000 red
28: (255,255, 0) #FFFF00 yellow
29: (255,255, 0) #FFFF00 yellow
30: (255,255, 0) #FFFF00 yellow
31: (255,255, 0) #FFFF00 yellow
32: ( 0, 0, 0) #000000 black
33: ( 0, 0, 0) #000000 black
34: ( 0, 0, 0) #000000 black
35: ( 0, 0, 0) #000000 black
36: (255,255, 0) #FFFF00 yellow
37: (255,255, 0) #FFFF00 yellow
38: (255,255, 0) #FFFF00 yellow
39: (255,255, 0) #FFFF00 yellow
40: ( 0,255, 0) #00FF00 lime
41: ( 0,255, 0) #00FF00 lime
42: ( 0,255, 0) #00FF00 lime
43: ( 0,255, 0) #00FF00 lime
44: (255,255, 0) #FFFF00 yellow
45: (255,255, 0) #FFFF00 yellow
46: (255,255, 0) #FFFF00 yellow
47: (255,255, 0) #FFFF00 yellow
48: ( 0,255, 0) #00FF00 lime
49: ( 48,207, 64) #30CF40 rgb(48,207,64)
50: ( 76,230, 76) #4CE64C rgb(76,230,76)
51: ( 56,209, 56) #38D138 rgb(56,209,56)
52: (255,255, 0) #FFFF00 yellow
53: (255,255, 0) #FFFF00 yellow
54: (255,255, 0) #FFFF00 yellow
55: (255,255, 0) #FFFF00 yellow
56: (255, 0, 0) #FF0000 red
57: (201, 54, 64) #C93640 rgb(201,54,64)
58: (230, 76, 76) #E64C4C rgb(230,76,76)
59: (209, 56, 56) #D13838 rgb(209,56,56)
60: (255,255, 0) #FFFF00 yellow
61: (255,255, 0) #FFFF00 yellow
62: (255,255, 0) #FFFF00 yellow
63: (255,255, 0) #FFFF00 yellow
64: (255,135, 0) #FF8700 rgb(255,135,0)
65: (201,135, 64) #C98740 rgb(201,135,64)
66: (230,158, 76) #E69E4C rgb(230,158,76)
67: (209,137, 56) #D18938 rgb(209,137,56)
68: (255,255, 0) #FFFF00 yellow
69: (255,255, 0) #FFFF00 yellow
70: (255,255, 0) #FFFF00 yellow
71: (255,255, 0) #FFFF00 yellow
72: (255,135, 0) #FF8700 rgb(255,135,0)
73: (255,135, 0) #FF8700 rgb(255,135,0)
74: (255,135, 0) #FF8700 rgb(255,135,0)
75: (255,135, 0) #FF8700 rgb(255,135,0)
76: (255,255, 0) #FFFF00 yellow
77: (255,255, 0) #FFFF00 yellow
78: (255,255, 0) #FFFF00 yellow
79: (255,255, 0) #FFFF00 yellow
80: ( 0, 0,255) #0000FF blue
81: ( 0, 0,255) #0000FF blue
82: ( 0, 0,255) #0000FF blue
83: ( 0, 0,255) #0000FF blue
84: (255,255, 0) #FFFF00 yellow
85: (255,255, 0) #FFFF00 yellow
86: (255,255, 0) #FFFF00 yellow
87: (255,255, 0) #FFFF00 yellow
88: (255,181,197) #FFB5C5 rgb(255,181,197)
89: (255,181,197) #FFB5C5 rgb(255,181,197)
90: (255,181,197) #FFB5C5 rgb(255,181,197)
91: (255,181,197) #FFB5C5 rgb(255,181,197)
92: (255,255, 0) #FFFF00 yellow
93: (255,255, 0) #FFFF00 yellow
94: (255,255, 0) #FFFF00 yellow
95: (255,255, 0) #FFFF00 yellow
96: ( 0,255,255) #00FFFF cyan
97: ( 0,255,255) #00FFFF cyan
98: ( 0,255,255) #00FFFF cyan
99: ( 0,255,255) #00FFFF cyan
100: (255,255, 0) #FFFF00 yellow
101: (255,255, 0) #FFFF00 yellow
102: (255,255, 0) #FFFF00 yellow
103: (255,255, 0) #FFFF00 yellow
104: (165, 42, 42) #A52A2A brown
105: (165, 42, 42) #A52A2A brown
106: (165, 42, 42) #A52A2A brown
107: (165, 42, 42) #A52A2A brown
108: (255,255, 0) #FFFF00 yellow
109: (255,255, 0) #FFFF00 yellow
110: (255,255, 0) #FFFF00 yellow
111: (255,255, 0) #FFFF00 yellow
112: ( 99,184,255) #63B8FF rgb(99,184,255)
113: ( 99,184,255) #63B8FF rgb(99,184,255)
114: ( 99,184,255) #63B8FF rgb(99,184,255)
115: ( 99,184,255) #63B8FF rgb(99,184,255)
116: (255,255, 0) #FFFF00 yellow
117: (255,255, 0) #FFFF00 yellow
118: (255,255, 0) #FFFF00 yellow
119: (255,255, 0) #FFFF00 yellow
120: (216,216,216) #D8D8D8 rgb(216,216,216)
121: (216,216,216) #D8D8D8 rgb(216,216,216)
122: (216,216,216) #D8D8D8 rgb(216,216,216)
123: (216,216,216) #D8D8D8 rgb(216,216,216)
124: (255,255, 0) #FFFF00 yellow
125: (255,255, 0) #FFFF00 yellow
126: (255,255, 0) #FFFF00 yellow
127: (255,255, 0) #FFFF00 yellow
128: (255,255, 0) #FFFF00 yellow
129: (255,255, 0) #FFFF00 yellow
130: (255,255, 0) #FFFF00 yellow
131: (255,255, 0) #FFFF00 yellow
132: (255,255,255) #FFFFFF white
133: (255,255,255) #FFFFFF white
134: (255,255,255) #FFFFFF white
135: (255,255,255) #FFFFFF white
136: (255,255,255) #FFFFFF white
137: (255,255,255) #FFFFFF white
138: (255,255,255) #FFFFFF white
139: (255,255,255) #FFFFFF white
140: (255,255, 0) #FFFF00 yellow
141: (255,255, 0) #FFFF00 yellow
142: (255,255, 0) #FFFF00 yellow
143: (255,255, 0) #FFFF00 yellow
144: (252,191, 0) #FCBF00 rgb(252,191,0)
145: (252,191, 0) #FCBF00 rgb(252,191,0)
146: (252,191, 0) #FCBF00 rgb(252,191,0)
147: (252,191, 0) #FCBF00 rgb(252,191,0)
148: (255,255, 0) #FFFF00 yellow
149: (255,255, 0) #FFFF00 yellow
150: (255,255, 0) #FFFF00 yellow
151: (255,255, 0) #FFFF00 yellow
152: (239,224, 0) #EFE000 rgb(239,224,0)
153: (239,224, 0) #EFE000 rgb(239,224,0)
154: (239,224, 0) #EFE000 rgb(239,224,0)
155: (239,224, 0) #EFE000 rgb(239,224,0)
156: (255,255, 0) #FFFF00 yellow
157: (255,255, 0) #FFFF00 yellow
158: (255,255, 0) #FFFF00 yellow
159: (255,255, 0) #FFFF00 yellow
160: (255,255,255) #FFFFFF white
161: (160,172,188) #A0ACBC rgb(160,172,188)
162: (211,211,211) #D3D3D3 LightGray
163: (174,174,174) #AEAEAE rgb(174,174,174)
164: (255,255, 0) #FFFF00 yellow
165: (255,255, 0) #FFFF00 yellow
166: (255,255, 0) #FFFF00 yellow
167: (255,255, 0) #FFFF00 yellow
168: (160, 32,240) #A020F0 rgb(160,32,240)
169: (160, 32,240) #A020F0 rgb(160,32,240)
170: (160, 32,240) #A020F0 rgb(160,32,240)
171: (160, 32,240) #A020F0 rgb(160,32,240)
172: (255,255, 0) #FFFF00 yellow
173: (255,255, 0) #FFFF00 yellow
174: (255,255, 0) #FFFF00 yellow
175: (255,255, 0) #FFFF00 yellow
176: (255,255, 0) #FFFF00 yellow
177: (201,207, 64) #C9CF40 rgb(201,207,64)
178: (230,230, 76) #E6E64C rgb(230,230,76)
179: (209,209, 56) #D1D138 rgb(209,209,56)
180: (255,255,255) #FFFFFF white
181: (255,255, 0) #FFFF00 yellow
182: (255,255, 0) #FFFF00 yellow
183: (255,255, 0) #FFFF00 yellow
184: (208,208,208) #D0D0D0 rgb(208,208,208)
185: ( 64, 64, 64) #404040 grey25
186: (148,148,148) #949494 grey58
187: (207,207,207) #CFCFCF grey81
188: ( 75, 75, 75) #4B4B4B rgb(75,75,75)
189: (108,108,108) #6C6C6C rgb(108,108,108)
190: (198,198,198) #C6C6C6 rgb(198,198,198)
191: (109,109,109) #6D6D6D rgb(109,109,109)
192: ( 92, 92, 92) #5C5C5C grey36
193: (255,211,192) #FFD3C0 rgb(255,211,192)
194: (173, 0, 0) #AD0000 rgb(173,0,0)
195: ( 0,255, 0) #00FF00 lime
196: (255,127, 0) #FF7F00 rgb(255,127,0)
197: (255, 0, 0) #FF0000 red
198: (255,255, 0) #FFFF00 yellow
199: (255,143, 0) #FF8F00 rgb(255,143,0)
200: (127,127,127) #7F7F7F grey50
201: (226,226,226) #E2E2E2 rgb(226,226,226)
202: ( 99,184,255) #63B8FF rgb(99,184,255)
203: (255,135, 0) #FF8700 rgb(255,135,0)
204: (163, 69,255) #A345FF rgb(163,69,255)
205: (255,163,207) #FFA3CF rgb(255,163,207)
206: (176,176,176) #B0B0B0 grey69
207: (214,145,106) #D6916A rgb(214,145,106)
208: ( 0, 0,205) #0000CD MediumBlue
209: (179,179,179) #B3B3B3 grey70
210: ( 43, 43, 43) #2B2B2B grey17
211: ( 78, 78, 78) #4E4E4E rgb(78,78,78)
212: (120,136,160) #7888A0 rgb(120,136,160)
213: (192, 0, 0) #C00000 rgb(192,0,0)
214: ( 0, 0,192) #0000C0 rgb(0,0,192)
215: ( 0,192, 0) #00C000 rgb(0,192,0)
216: (255,172,126) #FFAC7E rgb(255,172,126)
217: (165,165,165) #A5A5A5 rgb(165,165,165)
218: ( 94, 94, 94) #5E5E5E grey37
219: (175,175,175) #AFAFAF rgb(175,175,175)
220: (102,102,102) #666666 grey40
221: (133,133,133) #858585 grey52
222: ( 71, 71, 71) #474747 grey28
223: ( 82, 82, 82) #525252 grey32
224: (172,172,172) #ACACAC rgb(172,172,172)
225: (167,167,167) #A7A7A7 rgb(167,167,167)
226: (120,232,120) #78E878 rgb(120,232,120)
227: ( 0, 0,255) #0000FF blue
228: ( 0,255,255) #00FFFF cyan
229: (255, 0,255) #FF00FF magenta
230: (200,200,200) #C8C8C8 rgb(200,200,200)
231: (222,198,255) #DEC6FF rgb(222,198,255)
232: (203,124,121) #CB7C79 rgb(203,124,121)
233: ( 96,160,255) #60A0FF rgb(96,160,255)
234: (198,222,255) #C6DEFF rgb(198,222,255)
235: (255,198,198) #FFC6C6 rgb(255,198,198)
236: ( 76,155,200) #4C9BC8 rgb(76,155,200)
237: (198,255,222) #C6FFDE rgb(198,255,222)
238: (124,216,216) #7CD8D8 rgb(124,216,216)
239: (255,159,200) #FF9FC8 rgb(255,159,200)
240: (241,153, 80) #F19950 rgb(241,153,80)
241: (183, 0,141) #B7008D rgb(183,0,141)
242: ( 32,107,175) #206BAF rgb(32,107,175)
243: (248, 89, 84) #F85954 rgb(248,89,84)
244: (248,120, 23) #F87817 rgb(248,120,23)
245: (253,255,157) #FDFF9D rgb(253,255,157)
246: ( 74,112,139) #4A708B rgb(74,112,139)
247: (205,145,158) #CD919E rgb(205,145,158)
248: (205,205, 0) #CDCD00 rgb(205,205,0)
249: (205, 0, 0) #CD0000 rgb(205,0,0)
250: ( 0,205, 0) #00CD00 rgb(0,205,0)
251: (205,133, 0) #CD8500 rgb(205,133,0)
252: (211,211,211) #D3D3D3 LightGray
253: (191,191,191) #BFBFBF grey75
254: (243,199,173) #F3C7AD rgb(243,199,173)
255: (157,100, 67) #9D6443 rgb(157,100,67)
Rendering intent: Undefined
Resolution: 72x72
Units: Undefined
Filesize: 17.9336kb
Interlace: None
Background color: white
Border color: rgb(223,223,223)
Matte color: grey74
Transparent color: black
Page geometry: 680x837+0+0
Dispose: Undefined
Compression: LZW
Orientation: Undefined
Comment: xwdump
Signature: 27454fd11d78563cd3765358455cc9c50d2bca6d702df2b960055c1a38fc9f71
Tainted: False
Version: ImageMagick 6.3.5 07/16/07 Q16 http://www.imagemagick.org
vvl at lxstudy1: identify -verbose img2.gif
Image: img2.gif
Format: GIF (CompuServe graphics interchange format)
Class: PseudoClass
Geometry: 680x837+0+0
Type: Palette
Endianess: Undefined
Colorspace: RGB
Channel depth:
Red: 8-bit
Green: 8-bit
Blue: 8-bit
Channel statistics:
Red:
Min: 32 (0.12549)
Max: 255 (1)
Mean: 132.296 (0.518808)
Standard deviation: 25.4347 (0.0997441)
Green:
Min: 0 (0)
Max: 255 (1)
Mean: 132.479 (0.519525)
Standard deviation: 25.1714 (0.0987115)
Blue:
Min: 64 (0.25098)
Max: 255 (1)
Mean: 132.733 (0.52052)
Standard deviation: 25.6939 (0.10076)
Colors: 21
Histogram:
12242: ( 64, 64, 64) #404040 grey25
1418: ( 75, 75, 75) #4B4B4B rgb(75,75,75)
244: (109,109,109) #6D6D6D rgb(109,109,109)
480: ( 32,107,175) #206BAF rgb(32,107,175)
60: (120,232,120) #78E878 rgb(120,232,120)
480: ( 76,155,200) #4C9BC8 rgb(76,155,200)
900: ( 96,160,255) #60A0FF rgb(96,160,255)
60: (124,216,216) #7CD8D8 rgb(124,216,216)
60: (203,124,121) #CB7C79 rgb(203,124,121)
60: (248, 89, 84) #F85954 rgb(248,89,84)
60: (183, 0,141) #B7008D rgb(183,0,141)
60: (241,153, 80) #F19950 rgb(241,153,80)
514418: (128,128,128) #808080 fractal
60: (255,159,200) #FF9FC8 rgb(255,159,200)
15541: (200,200,200) #C8C8C8 rgb(200,200,200)
1422: (207,207,207) #CFCFCF grey81
12530: (208,208,208) #D0D0D0 rgb(208,208,208)
60: (198,222,255) #C6DEFF rgb(198,222,255)
60: (222,198,255) #DEC6FF rgb(222,198,255)
60: (255,198,198) #FFC6C6 rgb(255,198,198)
8885: (255,255,255) #FFFFFF white
Colormap: 256
0: (255,255,255) #FFFFFF white
1: ( 0, 0, 0) #000000 black
2: (126,126,126) #7E7E7E gray
3: (114,159,255) #729FFF rgb(114,159,255)
4: (193,213,255) #C1D5FF rgb(193,213,255)
5: ( 60, 84,135) #3C5487 rgb(60,84,135)
6: (168,168,168) #A8A8A8 grey66
7: (217,217,217) #D9D9D9 grey85
8: ( 89, 89, 89) #595959 grey35
9: (143,143,143) #8F8F8F grey56
10: ( 95,146,158) #5F929E rgb(95,146,158)
11: (183,206,212) #B7CED4 rgb(183,206,212)
12: ( 47, 73, 79) #2F494F rgb(47,73,79)
13: ( 81,124,134) #517C86 rgb(81,124,134)
14: ( 97,135,217) #6187D9 rgb(97,135,217)
15: (128,128,128) #808080 fractal
16: ( 0, 0, 0) #000000 black
17: (120,136,160) #7888A0 rgb(120,136,160)
18: (192,192,192) #C0C0C0 silver
19: (140,140,140) #8C8C8C grey55
20: (255,255, 0) #FFFF00 yellow
21: (255,255, 0) #FFFF00 yellow
22: (255,255, 0) #FFFF00 yellow
23: (255,255, 0) #FFFF00 yellow
24: (255, 0, 0) #FF0000 red
25: (255, 0, 0) #FF0000 red
26: (255, 0, 0) #FF0000 red
27: (255, 0, 0) #FF0000 red
28: (255,255, 0) #FFFF00 yellow
29: (255,255, 0) #FFFF00 yellow
30: (255,255, 0) #FFFF00 yellow
31: (255,255, 0) #FFFF00 yellow
32: ( 0, 0, 0) #000000 black
33: ( 0, 0, 0) #000000 black
34: ( 0, 0, 0) #000000 black
35: ( 0, 0, 0) #000000 black
36: (255,255, 0) #FFFF00 yellow
37: (255,255, 0) #FFFF00 yellow
38: (255,255, 0) #FFFF00 yellow
39: (255,255, 0) #FFFF00 yellow
40: ( 0,255, 0) #00FF00 lime
41: ( 0,255, 0) #00FF00 lime
42: ( 0,255, 0) #00FF00 lime
43: ( 0,255, 0) #00FF00 lime
44: (255,255, 0) #FFFF00 yellow
45: (255,255, 0) #FFFF00 yellow
46: (255,255, 0) #FFFF00 yellow
47: (255,255, 0) #FFFF00 yellow
48: ( 0,255, 0) #00FF00 lime
49: ( 48,207, 64) #30CF40 rgb(48,207,64)
50: ( 76,230, 76) #4CE64C rgb(76,230,76)
51: ( 56,209, 56) #38D138 rgb(56,209,56)
52: (255,255, 0) #FFFF00 yellow
53: (255,255, 0) #FFFF00 yellow
54: (255,255, 0) #FFFF00 yellow
55: (255,255, 0) #FFFF00 yellow
56: (255, 0, 0) #FF0000 red
57: (201, 54, 64) #C93640 rgb(201,54,64)
58: (230, 76, 76) #E64C4C rgb(230,76,76)
59: (209, 56, 56) #D13838 rgb(209,56,56)
60: (255,255, 0) #FFFF00 yellow
61: (255,255, 0) #FFFF00 yellow
62: (255,255, 0) #FFFF00 yellow
63: (255,255, 0) #FFFF00 yellow
64: (255,135, 0) #FF8700 rgb(255,135,0)
65: (201,135, 64) #C98740 rgb(201,135,64)
66: (230,158, 76) #E69E4C rgb(230,158,76)
67: (209,137, 56) #D18938 rgb(209,137,56)
68: (255,255, 0) #FFFF00 yellow
69: (255,255, 0) #FFFF00 yellow
70: (255,255, 0) #FFFF00 yellow
71: (255,255, 0) #FFFF00 yellow
72: (255,135, 0) #FF8700 rgb(255,135,0)
73: (255,135, 0) #FF8700 rgb(255,135,0)
74: (255,135, 0) #FF8700 rgb(255,135,0)
75: (255,135, 0) #FF8700 rgb(255,135,0)
76: (255,255, 0) #FFFF00 yellow
77: (255,255, 0) #FFFF00 yellow
78: (255,255, 0) #FFFF00 yellow
79: (255,255, 0) #FFFF00 yellow
80: ( 0, 0,255) #0000FF blue
81: ( 0, 0,255) #0000FF blue
82: ( 0, 0,255) #0000FF blue
83: ( 0, 0,255) #0000FF blue
84: (255,255, 0) #FFFF00 yellow
85: (255,255, 0) #FFFF00 yellow
86: (255,255, 0) #FFFF00 yellow
87: (255,255, 0) #FFFF00 yellow
88: (255,181,197) #FFB5C5 rgb(255,181,197)
89: (255,181,197) #FFB5C5 rgb(255,181,197)
90: (255,181,197) #FFB5C5 rgb(255,181,197)
91: (255,181,197) #FFB5C5 rgb(255,181,197)
92: (255,255, 0) #FFFF00 yellow
93: (255,255, 0) #FFFF00 yellow
94: (255,255, 0) #FFFF00 yellow
95: (255,255, 0) #FFFF00 yellow
96: ( 0,255,255) #00FFFF cyan
97: ( 0,255,255) #00FFFF cyan
98: ( 0,255,255) #00FFFF cyan
99: ( 0,255,255) #00FFFF cyan
100: (255,255, 0) #FFFF00 yellow
101: (255,255, 0) #FFFF00 yellow
102: (255,255, 0) #FFFF00 yellow
103: (255,255, 0) #FFFF00 yellow
104: (165, 42, 42) #A52A2A brown
105: (165, 42, 42) #A52A2A brown
106: (165, 42, 42) #A52A2A brown
107: (165, 42, 42) #A52A2A brown
108: (255,255, 0) #FFFF00 yellow
109: (255,255, 0) #FFFF00 yellow
110: (255,255, 0) #FFFF00 yellow
111: (255,255, 0) #FFFF00 yellow
112: ( 99,184,255) #63B8FF rgb(99,184,255)
113: ( 99,184,255) #63B8FF rgb(99,184,255)
114: ( 99,184,255) #63B8FF rgb(99,184,255)
115: ( 99,184,255) #63B8FF rgb(99,184,255)
116: (255,255, 0) #FFFF00 yellow
117: (255,255, 0) #FFFF00 yellow
118: (255,255, 0) #FFFF00 yellow
119: (255,255, 0) #FFFF00 yellow
120: (216,216,216) #D8D8D8 rgb(216,216,216)
121: (216,216,216) #D8D8D8 rgb(216,216,216)
122: (216,216,216) #D8D8D8 rgb(216,216,216)
123: (216,216,216) #D8D8D8 rgb(216,216,216)
124: (255,255, 0) #FFFF00 yellow
125: (255,255, 0) #FFFF00 yellow
126: (255,255, 0) #FFFF00 yellow
127: (255,255, 0) #FFFF00 yellow
128: (255,255, 0) #FFFF00 yellow
129: (255,255, 0) #FFFF00 yellow
130: (255,255, 0) #FFFF00 yellow
131: (255,255, 0) #FFFF00 yellow
132: (255,255,255) #FFFFFF white
133: (255,255,255) #FFFFFF white
134: (255,255,255) #FFFFFF white
135: (255,255,255) #FFFFFF white
136: (255,255,255) #FFFFFF white
137: (255,255,255) #FFFFFF white
138: (255,255,255) #FFFFFF white
139: (255,255,255) #FFFFFF white
140: (255,255, 0) #FFFF00 yellow
141: (255,255, 0) #FFFF00 yellow
142: (255,255, 0) #FFFF00 yellow
143: (255,255, 0) #FFFF00 yellow
144: (252,191, 0) #FCBF00 rgb(252,191,0)
145: (252,191, 0) #FCBF00 rgb(252,191,0)
146: (252,191, 0) #FCBF00 rgb(252,191,0)
147: (252,191, 0) #FCBF00 rgb(252,191,0)
148: (255,255, 0) #FFFF00 yellow
149: (255,255, 0) #FFFF00 yellow
150: (255,255, 0) #FFFF00 yellow
151: (255,255, 0) #FFFF00 yellow
152: (239,224, 0) #EFE000 rgb(239,224,0)
153: (239,224, 0) #EFE000 rgb(239,224,0)
154: (239,224, 0) #EFE000 rgb(239,224,0)
155: (239,224, 0) #EFE000 rgb(239,224,0)
156: (255,255, 0) #FFFF00 yellow
157: (255,255, 0) #FFFF00 yellow
158: (255,255, 0) #FFFF00 yellow
159: (255,255, 0) #FFFF00 yellow
160: (255,255,255) #FFFFFF white
161: (160,172,188) #A0ACBC rgb(160,172,188)
162: (211,211,211) #D3D3D3 LightGray
163: (174,174,174) #AEAEAE rgb(174,174,174)
164: (255,255, 0) #FFFF00 yellow
165: (255,255, 0) #FFFF00 yellow
166: (255,255, 0) #FFFF00 yellow
167: (255,255, 0) #FFFF00 yellow
168: (160, 32,240) #A020F0 rgb(160,32,240)
169: (160, 32,240) #A020F0 rgb(160,32,240)
170: (160, 32,240) #A020F0 rgb(160,32,240)
171: (160, 32,240) #A020F0 rgb(160,32,240)
172: (255,255, 0) #FFFF00 yellow
173: (255,255, 0) #FFFF00 yellow
174: (255,255, 0) #FFFF00 yellow
175: (255,255, 0) #FFFF00 yellow
176: (255,255, 0) #FFFF00 yellow
177: (201,207, 64) #C9CF40 rgb(201,207,64)
178: (230,230, 76) #E6E64C rgb(230,230,76)
179: (209,209, 56) #D1D138 rgb(209,209,56)
180: (255,255,255) #FFFFFF white
181: (255,255, 0) #FFFF00 yellow
182: (255,255, 0) #FFFF00 yellow
183: (255,255, 0) #FFFF00 yellow
184: (208,208,208) #D0D0D0 rgb(208,208,208)
185: ( 64, 64, 64) #404040 grey25
186: (148,148,148) #949494 grey58
187: (207,207,207) #CFCFCF grey81
188: ( 75, 75, 75) #4B4B4B rgb(75,75,75)
189: (108,108,108) #6C6C6C rgb(108,108,108)
190: (198,198,198) #C6C6C6 rgb(198,198,198)
191: (109,109,109) #6D6D6D rgb(109,109,109)
192: ( 92, 92, 92) #5C5C5C grey36
193: (255,211,192) #FFD3C0 rgb(255,211,192)
194: (173, 0, 0) #AD0000 rgb(173,0,0)
195: ( 0,255, 0) #00FF00 lime
196: (255,127, 0) #FF7F00 rgb(255,127,0)
197: (255, 0, 0) #FF0000 red
198: (255,255, 0) #FFFF00 yellow
199: (255,143, 0) #FF8F00 rgb(255,143,0)
200: (127,127,127) #7F7F7F grey50
201: (226,226,226) #E2E2E2 rgb(226,226,226)
202: ( 99,184,255) #63B8FF rgb(99,184,255)
203: (255,135, 0) #FF8700 rgb(255,135,0)
204: (163, 69,255) #A345FF rgb(163,69,255)
205: (255,163,207) #FFA3CF rgb(255,163,207)
206: (176,176,176) #B0B0B0 grey69
207: (214,145,106) #D6916A rgb(214,145,106)
208: ( 0, 0,205) #0000CD MediumBlue
209: (179,179,179) #B3B3B3 grey70
210: ( 43, 43, 43) #2B2B2B grey17
211: ( 78, 78, 78) #4E4E4E rgb(78,78,78)
212: (120,136,160) #7888A0 rgb(120,136,160)
213: (192, 0, 0) #C00000 rgb(192,0,0)
214: ( 0, 0,192) #0000C0 rgb(0,0,192)
215: ( 0,192, 0) #00C000 rgb(0,192,0)
216: (255,172,126) #FFAC7E rgb(255,172,126)
217: (165,165,165) #A5A5A5 rgb(165,165,165)
218: ( 94, 94, 94) #5E5E5E grey37
219: (175,175,175) #AFAFAF rgb(175,175,175)
220: (102,102,102) #666666 grey40
221: (133,133,133) #858585 grey52
222: ( 71, 71, 71) #474747 grey28
223: ( 82, 82, 82) #525252 grey32
224: (172,172,172) #ACACAC rgb(172,172,172)
225: (167,167,167) #A7A7A7 rgb(167,167,167)
226: (120,232,120) #78E878 rgb(120,232,120)
227: ( 0, 0,255) #0000FF blue
228: ( 0,255,255) #00FFFF cyan
229: (255, 0,255) #FF00FF magenta
230: (200,200,200) #C8C8C8 rgb(200,200,200)
231: (222,198,255) #DEC6FF rgb(222,198,255)
232: (203,124,121) #CB7C79 rgb(203,124,121)
233: ( 96,160,255) #60A0FF rgb(96,160,255)
234: (198,222,255) #C6DEFF rgb(198,222,255)
235: (255,198,198) #FFC6C6 rgb(255,198,198)
236: ( 76,155,200) #4C9BC8 rgb(76,155,200)
237: (198,255,222) #C6FFDE rgb(198,255,222)
238: (124,216,216) #7CD8D8 rgb(124,216,216)
239: (255,159,200) #FF9FC8 rgb(255,159,200)
240: (241,153, 80) #F19950 rgb(241,153,80)
241: (183, 0,141) #B7008D rgb(183,0,141)
242: ( 32,107,175) #206BAF rgb(32,107,175)
243: (248, 89, 84) #F85954 rgb(248,89,84)
244: (248,120, 23) #F87817 rgb(248,120,23)
245: (253,255,157) #FDFF9D rgb(253,255,157)
246: ( 0,127, 63) #007F3F rgb(0,127,63)
247: ( 0,127,127) #007F7F rgb(0,127,127)
248: ( 0,127,191) #007FBF rgb(0,127,191)
249: ( 0,127,255) #007FFF rgb(0,127,255)
250: ( 0,191, 63) #00BF3F rgb(0,191,63)
251: ( 0,191,127) #00BF7F rgb(0,191,127)
252: ( 0,191,191) #00BFBF rgb(0,191,191)
253: ( 0,255, 63) #00FF3F rgb(0,255,63)
254: ( 0,255,127) #00FF7F SpringGreen
255: ( 0,255,191) #00FFBF rgb(0,255,191)
Rendering intent: Undefined
Resolution: 72x72
Units: Undefined
Filesize: 17.9336kb
Interlace: None
Background color: white
Border color: rgb(223,223,223)
Matte color: grey74
Transparent color: black
Page geometry: 680x837+0+0
Dispose: Undefined
Compression: LZW
Orientation: Undefined
Comment: xwdump
Signature: 27454fd11d78563cd3765358455cc9c50d2bca6d702df2b960055c1a38fc9f71
Tainted: False
Version: ImageMagick 6.3.5 07/16/07 Q16 http://www.imagemagick.org
vvl at lxstudy1: convert img1.gif img2.gif -compose difference -composite -normalize out.gif
vvl at lxstudy1: identify -verbose out.gif
Image: out.gif
Format: GIF (CompuServe graphics interchange format)
Class: PseudoClass
Geometry: 680x837+0+0
Type: Bilevel
Endianess: Undefined
Colorspace: Gray
Channel depth:
Gray: 1-bit
Channel statistics:
Gray:
Min: 0 (0)
Max: 0 (0)
Mean: 0 (0)
Standard deviation: 0 (0)
Colors: 1
Histogram:
569160: ( 0, 0, 0) #000000 black
Colormap: 2
0: ( 0, 0, 0) #000000 black
1: ( 0, 0, 0) #000000 black
Rendering intent: Undefined
Resolution: 72x72
Units: Undefined
Filesize: 1.24414kb
Interlace: None
Background color: black
Border color: rgb(223,223,223)
Matte color: grey74
Transparent color: black
Page geometry: 680x837+0+0
Dispose: Undefined
Compression: LZW
Orientation: Undefined
Comment: xwdump
Signature: caf1c622d9493c716a4cdccca264531263659538567d392e3082e9771cbd8e46
Tainted: False
Version: ImageMagick 6.3.5 07/16/07 Q16 http://www.imagemagick.org
vvl at lxstudy1: compare img1.gif img2.gif out.gif
vvl at lxstudy1: identify -verbose out.gif
Image: out.gif
Format: GIF (CompuServe graphics interchange format)
Class: PseudoClass
Geometry: 680x837+0+0
Type: Palette
Endianess: Undefined
Colorspace: RGB
Channel depth:
Red: 8-bit
Green: 8-bit
Blue: 8-bit
Channel statistics:
Red:
Min: 233 (0.913725)
Max: 255 (1)
Mean: 242.385 (0.95053)
Standard deviation: 2.25756 (0.00885318)
Green:
Min: 230 (0.901961)
Max: 253 (0.992157)
Mean: 242.404 (0.950605)
Standard deviation: 2.23301 (0.00875692)
Blue:
Min: 236 (0.92549)
Max: 255 (1)
Mean: 242.429 (0.950702)
Standard deviation: 2.29356 (0.00899436)
Colors: 18
Histogram:
4473: (237,237,237) #EDEDED grey93
9155: (236,236,236) #ECECEC rgb(236,236,236)
481: (233,240,247) #E9F0F7 rgb(233,240,247)
475: (237,245,250) #EDF5FA rgb(237,245,250)
895: (239,246,255) #EFF6FF rgb(239,246,255)
56: (254,238,238) #FEEEEE rgb(254,238,238)
60: (248,230,244) #F8E6F4 rgb(248,230,244)
61: (254,245,238) #FEF5EE rgb(254,245,238)
1202: (240,240,240) #F0F0F0 grey94
513935: (242,242,242) #F2F2F2 grey95
62: (242,253,242) #F2FDF2 rgb(242,253,242)
69: (242,251,251) #F2FBFB rgb(242,251,251)
62: (250,242,242) #FAF2F2 rgb(250,242,242)
58: (255,245,250) #FFF5FA rgb(255,245,250)
37948: (250,250,250) #FAFAFA grey98
72: (249,252,255) #F9FCFF rgb(249,252,255)
80: (255,249,249) #FFF9F9 rgb(255,249,249)
16: (252,249,255) #FCF9FF rgb(252,249,255)
Colormap: 32
0: (236,236,236) #ECECEC rgb(236,236,236)
1: (237,237,237) #EDEDED grey93
2: (254,238,238) #FEEEEE rgb(254,238,238)
3: (254,245,238) #FEF5EE rgb(254,245,238)
4: (248,230,244) #F8E6F4 rgb(248,230,244)
5: (233,240,247) #E9F0F7 rgb(233,240,247)
6: (237,245,250) #EDF5FA rgb(237,245,250)
7: (239,246,255) #EFF6FF rgb(239,246,255)
8: (240,240,240) #F0F0F0 grey94
9: (242,242,242) #F2F2F2 grey95
10: (250,242,242) #FAF2F2 rgb(250,242,242)
11: (242,253,242) #F2FDF2 rgb(242,253,242)
12: (255,245,250) #FFF5FA rgb(255,245,250)
13: (242,251,251) #F2FBFB rgb(242,251,251)
14: (250,250,250) #FAFAFA grey98
15: (255,249,249) #FFF9F9 rgb(255,249,249)
16: (252,249,255) #FCF9FF rgb(252,249,255)
17: (249,252,255) #F9FCFF rgb(249,252,255)
18: (255,255,255) #FFFFFF white
19: ( 0, 0, 0) #000000 black
20: ( 0, 0, 0) #000000 black
21: ( 0, 0, 0) #000000 black
22: ( 0, 0, 0) #000000 black
23: ( 0, 0, 0) #000000 black
24: ( 0, 0, 0) #000000 black
25: ( 0, 0, 0) #000000 black
26: ( 0, 0, 0) #000000 black
27: ( 0, 0, 0) #000000 black
28: ( 0, 0, 0) #000000 black
29: ( 0, 0, 0) #000000 black
30: ( 0, 0, 0) #000000 black
31: ( 0, 0, 0) #000000 black
Rendering intent: Undefined
Resolution: 72x72
Units: Undefined
Filesize: 19.1426kb
Interlace: None
Background color: white
Border color: rgb(223,223,223)
Matte color: grey74
Transparent color: black
Page geometry: 680x837+0+0
Dispose: Undefined
Compression: LZW
Orientation: Undefined
Comment: xwdump
Signature: 08a0bd3ba2ca6b819f529e04dfde7cfb156764d17697c4f21eb20d8aea70295c
Tainted: False
Version: ImageMagick 6.3.5 07/16/07 Q16 http://www.imagemagick.org
--
Stef Van Vlierberghe Eurocontrol - CFMU room 20115
stef.van-vlierberghe at eurocontrol.int Raketstraat 96
Tel: +32 2 729 97 32 B-1130 BRUSSELS
Fax: +32 2 729 90 22 Belgium
____
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