Las fechas declaradas por HRW (Human Rights Watch) para una foto de una bomba racimo y la que indica la informacion EXIF del archivo JPEG de la foto no coinciden. Esto
lo descubrió Maritxu (en su blog esta bien contada esta parte). La foto fue presentada como evidencia del salvajismo de Gaddafi y tiene un peso que las fotos de los bombardeos de Israel a Gaza con fósforo blanco parecen no tener para el fraudulento Tribunal Penal Internacional.
Por mi parte, ayudada por el
programa JPEGsnooper he descubierto que
la foto fue editada Ver resultados
-
JPEGsnoop 1.5.2 by Calvin Hass
http://www.impulseadventure.com/photo/
-------------------------------------
Filename: [C:\2011_Libya_Mat120b.jpg]
Filesize: [299133] Bytes
Start Offset: 0x00000000
*** Marker: SOI (xFFD8) ***
OFFSET: 0x00000000
*** Marker: APP0 (xFFE0) ***
OFFSET: 0x00000002
length = 16
identifier = [JFIF]
version = [1.2]
density = 72 x 72 DPI (dots per inch)
thumbnail = 0 x 0
*** Marker: APP1 (xFFE1) ***
OFFSET: 0x00000014
length = 5919
Identifier = [Exif]
Identifier TIFF = 0x[49492A00 08000000]
Endian = Intel (little)
TAG Mark x002A = 0x002A
EXIF IFD0 @ Absolute 0x00000026
Dir Length = 0x000A
[Make ] = "Nokia"
[Model ] = "E72-1"
[Orientation ] = Row 0: top, Col 0: left
[XResolution ] = 720000/10000
[YResolution ] = 720000/10000
[ResolutionUnit ] = Inch
[Software ] = "Adobe Photoshop CS4 Macintosh"
[DateTime ] = "2011:04:15 15:33:26"
[YCbCrPositioning ] = Centered
[ExifOffset ] = @ 0x00D4
Offset to Next IFD = 0x00000260
EXIF IFD1 @ Absolute 0x0000027E
Dir Length = 0x0006
[Compression ] = JPEG
[XResolution ] = 72/1
[YResolution ] = 72/1
[ResolutionUnit ] = Inch
[JpegIFOffset ] = @ +0x02BE = @ 0x02DC
[JpegIFByteCount ] = 5209
Offset to Next IFD = 0x00000000
EXIF SubIFD @ Absolute 0x000000F2
Dir Length = 0x0019
[ExposureTime ] = 29995/1000000 s
[FNumber ] = F2.8
[ISOSpeedRatings ] = 312
[ExifVersion ] = 02.20
[DateTimeOriginal ] = "2011:04:10 23:24:19"
[DateTimeDigitized ] = "2011:04:10 23:24:19"
[ComponentsConfiguration ] = [Y Cb Cr .]
[ShutterSpeedValue ] = 5059/1000
[ApertureValue ] = 193/100
[LightSource ] = Flash
[Flash ] = Flash fired
[FocalLength ] = 5 mm
[SubSecTime ] = "133"
[SubSecTimeOriginal ] = "133"
[SubSecTimeDigitized ] = "133"
[FlashPixVersion ] = 01.00
[ColorSpace ] = sRGB
[ExifImageWidth ] = 658
[ExifImageHeight ] = 494
[CustomRendered ] = Normal process
[ExposureMode ] = Auto exposure
[WhiteBalance ] = Auto white balance
[DigitalZoomRatio ] = 107/100
[SceneCaptureType ] = Standard
[GainControl ] = 2
*** Marker: APP13 (xFFED) ***
OFFSET: 0x00001735
length = 6704
Identifier = [Photoshop 3.0]
8BIM: [0x0425] Name=[] Len=[0x0010]
8BIM: [0x03ED] Name=[] Len=[0x0010]
8BIM: [0x0426] Name=[] Len=[0x000E]
8BIM: [0x040D] Name=[] Len=[0x0004]
8BIM: [0x0419] Name=[] Len=[0x0004]
8BIM: [0x03F3] Name=[] Len=[0x0009]
8BIM: [0x2710] Name=[] Len=[0x000A]
8BIM: [0x03F5] Name=[] Len=[0x0048]
8BIM: [0x03F8] Name=[] Len=[0x0070]
8BIM: [0x0408] Name=[] Len=[0x0010]
8BIM: [0x041E] Name=[] Len=[0x0004]
8BIM: [0x041A] Name=[] Len=[0x0359]
8BIM: [0x0428] Name=[] Len=[0x000C]
8BIM: [0x0414] Name=[] Len=[0x0004]
8BIM: [0x040C] Name=[] Len=[0x1475]
8BIM: [0x0421] Name=[] Len=[0x0055]
8BIM: [0x0406] Name=[] Len=[0x0007]
Photoshop Save As Quality = [12]
Photoshop Save Format = [Standard]
*** Marker: APP1 (xFFE1) ***
OFFSET: 0x00003167
length = 5290
Identifier = [http://ns.adobe.com/xap/1.0/]
XMP =
*** Marker: APP2 (xFFE2) ***
OFFSET: 0x00004613
length = 3160
Identifier = [ICC_PROFILE]
ICC Profile:
Marker Number = 1 of 1
Profile Size : 3144 bytes
Preferred CMM Type : 'Lino' (0x4C696E6F)
Profile Version : 0.2.1.0 (0x02100000)
Profile Device/Class : Display Device profile ('mntr' (0x6D6E7472))
Data Colour Space : rgbData ('RGB ' (0x52474220))
Profile connection space (PCS) : 'XYZ ' (0x58595A20)
Profile creation date : 1998-02-09 06:49:00
Profile file signature : 'acsp' (0x61637370)
Primary platform : Microsoft Corporation ('MSFT' (0x4D534654))
Profile flags : 0x00000000
Profile flags > Profile not embedded
Profile flags > Profile can't be used independently of embedded
Device Manufacturer : 'IEC ' (0x49454320)
Device Model : 'sRGB' (0x73524742)
Device attributes : 0x00000000_00000000
Device attributes > Reflective
Device attributes > Glossy
Device attributes > Media polarity = negative
Device attributes > Black & white media
Rendering intent : Perceptual
Profile creator : 'HP ' (0x48502020)
Profile ID : 0x00000000_00000000_00000000
*** Marker: APP14 (xFFEE) ***
OFFSET: 0x0000526D
length = 14
*** Marker: DQT (xFFDB) ***
Define a Quantization Table.
OFFSET: 0x0000527D
Table length = 132
----
Precision=8 bits
Destination ID=0 (Luminance)
DQT, Row #0: 1 1 1 1 1 1 1 1
DQT, Row #1: 1 1 1 1 1 1 1 1
DQT, Row #2: 1 1 1 1 1 1 1 2
DQT, Row #3: 1 1 1 1 1 1 2 2
DQT, Row #4: 1 1 1 1 1 2 2 3
DQT, Row #5: 1 1 1 1 2 2 3 3
DQT, Row #6: 1 1 1 2 2 3 3 3
DQT, Row #7: 1 1 2 2 3 3 3 3
Approx quality factor = 98.25 (scaling=3.50 variance=4.81)
----
Precision=8 bits
Destination ID=1 (Chrominance)
DQT, Row #0: 1 1 1 1 2 3 3 3
DQT, Row #1: 1 1 1 2 3 3 3 3
DQT, Row #2: 1 1 1 3 3 3 3 3
DQT, Row #3: 1 2 3 3 3 3 3 3
DQT, Row #4: 2 3 3 3 3 3 3 3
DQT, Row #5: 3 3 3 3 3 3 3 3
DQT, Row #6: 3 3 3 3 3 3 3 3
DQT, Row #7: 3 3 3 3 3 3 3 3
Approx quality factor = 98.42 (scaling=3.16 variance=0.50)
*** Marker: SOF0 (Baseline DCT) (xFFC0) ***
OFFSET: 0x00005303
Frame header length = 17
Precision = 8
Number of Lines = 494
Samples per Line = 658
Image Size = 658 x 494
Raw Image Orientation = Landscape
Number of Img components = 3
Component[1]: ID=0x01, Samp Fac=0x11 (Subsamp 1 x 1), Quant Tbl Sel=0x00 (Lum: Y)
Component[2]: ID=0x02, Samp Fac=0x11 (Subsamp 1 x 1), Quant Tbl Sel=0x01 (Chrom: Cb)
Component[3]: ID=0x03, Samp Fac=0x11 (Subsamp 1 x 1), Quant Tbl Sel=0x01 (Chrom: Cr)
*** Marker: DRI (Restart Interval) (xFFDD) ***
OFFSET: 0x00005316
length = 4
interval = 83
*** Marker: DHT (Define Huffman Table) (xFFC4) ***
OFFSET: 0x0000531C
Huffman table length = 418
----
Destination ID = 0
Class = 0 (DC / Lossless Table)
Codes of length 01 bits (000 total):
Codes of length 02 bits (000 total):
Codes of length 03 bits (006 total): 07 08 06 05 04 09
Codes of length 04 bits (002 total): 03 0A
Codes of length 05 bits (003 total): 02 01 00
Codes of length 06 bits (001 total): 0B
Codes of length 07 bits (000 total):
Codes of length 08 bits (000 total):
Codes of length 09 bits (000 total):
Codes of length 10 bits (000 total):
Codes of length 11 bits (000 total):
Codes of length 12 bits (000 total):
Codes of length 13 bits (000 total):
Codes of length 14 bits (000 total):
Codes of length 15 bits (000 total):
Codes of length 16 bits (000 total):
Total number of codes: 012
----
Destination ID = 1
Class = 0 (DC / Lossless Table)
Codes of length 01 bits (000 total):
Codes of length 02 bits (000 total):
Codes of length 03 bits (006 total): 06 05 04 03 07 02
Codes of length 04 bits (003 total): 08 01 09
Codes of length 05 bits (001 total): 00
Codes of length 06 bits (001 total): 0A
Codes of length 07 bits (001 total): 0B
Codes of length 08 bits (000 total):
Codes of length 09 bits (000 total):
Codes of length 10 bits (000 total):
Codes of length 11 bits (000 total):
Codes of length 12 bits (000 total):
Codes of length 13 bits (000 total):
Codes of length 14 bits (000 total):
Codes of length 15 bits (000 total):
Codes of length 16 bits (000 total):
Total number of codes: 012
----
Destination ID = 0
Class = 1 (AC Table)
Codes of length 01 bits (000 total):
Codes of length 02 bits (002 total): 01 02
Codes of length 03 bits (001 total): 03
Codes of length 04 bits (003 total): 04 11 05
Codes of length 05 bits (004 total): 12 06 21 07
Codes of length 06 bits (001 total): 13
Codes of length 07 bits (003 total): 22 00 08
Codes of length 08 bits (003 total): 31 14 41
Codes of length 09 bits (002 total): 32 23
Codes of length 10 bits (003 total): 15 09 51
Codes of length 11 bits (003 total): 42 16 61
Codes of length 12 bits (003 total): 24 33 17
Codes of length 13 bits (002 total): 52 71
Codes of length 14 bits (006 total): 81 18 62 91 25 43
Codes of length 15 bits (009 total): A1 B1 F0 26 34 72 0A 19 C1
Codes of length 16 bits (117 total): D1 35 27 E1 53 36 82 F1 92 A2 44 54 73 45 46 37
47 63 28 55 56 57 1A B2 C2 D2 E2 F2 64 83 74 93
84 65 A3 B3 C3 D3 E3 29 38 66 F3 75 2A 39 3A 48
49 4A 58 59 5A 67 68 69 6A 76 77 78 79 7A 85 86
87 88 89 8A 94 95 96 97 98 99 9A A4 A5 A6 A7 A8
A9 AA B4 B5 B6 B7 B8 B9 BA C4 C5 C6 C7 C8 C9 CA
D4 D5 D6 D7 D8 D9 DA E4 E5 E6 E7 E8 E9 EA F4 F5
F6 F7 F8 F9 FA
Total number of codes: 162
----
Destination ID = 1
Class = 1 (AC Table)
Codes of length 01 bits (000 total):
Codes of length 02 bits (002 total): 01 02
Codes of length 03 bits (001 total): 03
Codes of length 04 bits (003 total): 11 04 21
Codes of length 05 bits (002 total): 12 05
Codes of length 06 bits (004 total): 31 06 00 22
Codes of length 07 bits (004 total): 13 41 51 07
Codes of length 08 bits (003 total): 32 61 14
Codes of length 09 bits (005 total): 71 08 42 81 23
Codes of length 10 bits (004 total): 91 15 52 A1
Codes of length 11 bits (004 total): 62 16 33 09
Codes of length 12 bits (004 total): B1 24 C1 D1
Codes of length 13 bits (006 total): 43 72 F0 17 E1 82
Codes of length 14 bits (006 total): 34 25 92 53 18 63
Codes of length 15 bits (005 total): 44 F1 A2 B2 26
Codes of length 16 bits (109 total): 35 19 54 36 45 64 27 0A 73 83 93 46 74 C2 D2 E2
F2 55 65 75 56 37 84 85 A3 B3 C3 D3 E3 F3 29 1A
94 A4 B4 C4 D4 E4 F4 95 A5 B5 C5 D5 E5 F5 28 47
57 66 38 76 86 96 A6 B6 C6 D6 E6 F6 67 77 87 97
A7 B7 C7 D7 E7 F7 48 58 68 78 88 98 A8 B8 C8 D8
E8 F8 39 49 59 69 79 89 99 A9 B9 C9 D9 E9 F9 2A
3A 4A 5A 6A 7A 8A 9A AA BA CA DA EA FA
Total number of codes: 162
*** Marker: SOS (Start of Scan) (xFFDA) ***
OFFSET: 0x000054C0
Scan header length = 12
Number of img components = 3
Component[1]: selector=0x01, table=0x00
Component[2]: selector=0x02, table=0x11
Component[3]: selector=0x03, table=0x11
Spectral selection = 0 .. 63
Successive approximation = 0x00
*** Decoding SCAN Data ***
OFFSET: 0x000054CE
Scan Decode Mode: No IDCT (DC only)
NOTE: Low-resolution DC component shown. Can decode full-res with [Options->Scan Segment->Full IDCT]
Scan Data encountered marker 0xFFD9 @ 0x0004907B.0
Compression stats:
Compression Ratio: 221.27:1
Bits per pixel: 0.11:1
Huffman code histogram stats:
Huffman Table: (Dest ID: 0, Class: DC)
# codes of length 01 bits: 0 ( 0%)
# codes of length 02 bits: 0 ( 0%)
# codes of length 03 bits: 4728 ( 92%)
# codes of length 04 bits: 253 ( 5%)
# codes of length 05 bits: 165 ( 3%)
# codes of length 06 bits: 0 ( 0%)
# codes of length 07 bits: 0 ( 0%)
# codes of length 08 bits: 0 ( 0%)
# codes of length 09 bits: 0 ( 0%)
# codes of length 10 bits: 0 ( 0%)
# codes of length 11 bits: 0 ( 0%)
# codes of length 12 bits: 0 ( 0%)
# codes of length 13 bits: 0 ( 0%)
# codes of length 14 bits: 0 ( 0%)
# codes of length 15 bits: 0 ( 0%)
# codes of length 16 bits: 0 ( 0%)
Huffman Table: (Dest ID: 1, Class: DC)
# codes of length 01 bits: 0 ( 0%)
# codes of length 02 bits: 0 ( 0%)
# codes of length 03 bits: 8472 ( 82%)
# codes of length 04 bits: 1266 ( 12%)
# codes of length 05 bits: 554 ( 5%)
# codes of length 06 bits: 0 ( 0%)
# codes of length 07 bits: 0 ( 0%)
# codes of length 08 bits: 0 ( 0%)
# codes of length 09 bits: 0 ( 0%)
# codes of length 10 bits: 0 ( 0%)
# codes of length 11 bits: 0 ( 0%)
# codes of length 12 bits: 0 ( 0%)
# codes of length 13 bits: 0 ( 0%)
# codes of length 14 bits: 0 ( 0%)
# codes of length 15 bits: 0 ( 0%)
# codes of length 16 bits: 0 ( 0%)
Huffman Table: (Dest ID: 0, Class: AC)
# codes of length 01 bits: 0 ( 0%)
# codes of length 02 bits: 99080 ( 45%)
# codes of length 03 bits: 37545 ( 17%)
# codes of length 04 bits: 49567 ( 22%)
# codes of length 05 bits: 17367 ( 8%)
# codes of length 06 bits: 2869 ( 1%)
# codes of length 07 bits: 6743 ( 3%)
# codes of length 08 bits: 4729 ( 2%)
# codes of length 09 bits: 827 ( 0%)
# codes of length 10 bits: 1045 ( 0%)
# codes of length 11 bits: 602 ( 0%)
# codes of length 12 bits: 247 ( 0%)
# codes of length 13 bits: 260 ( 0%)
# codes of length 14 bits: 265 ( 0%)
# codes of length 15 bits: 191 ( 0%)
# codes of length 16 bits: 190 ( 0%)
Huffman Table: (Dest ID: 1, Class: AC)
# codes of length 01 bits: 0 ( 0%)
# codes of length 02 bits: 82855 ( 50%)
# codes of length 03 bits: 15028 ( 9%)
# codes of length 04 bits: 26526 ( 16%)
# codes of length 05 bits: 7504 ( 5%)
# codes of length 06 bits: 16776 ( 10%)
# codes of length 07 bits: 7820 ( 5%)
# codes of length 08 bits: 2303 ( 1%)
# codes of length 09 bits: 2531 ( 2%)
# codes of length 10 bits: 1178 ( 1%)
# codes of length 11 bits: 95 ( 0%)
# codes of length 12 bits: 1079 ( 1%)
# codes of length 13 bits: 707 ( 0%)
# codes of length 14 bits: 44 ( 0%)
# codes of length 15 bits: 155 ( 0%)
# codes of length 16 bits: 9 ( 0%)
YCC clipping in DC:
Y component: [<0= 0] [>255= 0]
Cb component: [<0= 0] [>255= 0]
Cr component: [<0= 0] [>255= 0]
RGB clipping in DC:
R component: [<0= 0] [>255= 0]
G component: [<0= 0] [>255= 0]
B component: [<0= 0] [>255= 0]
Average Pixel Luminance (Y):
Y=[133] (range: 0..255)
Brightest Pixel Search:
YCC=[ 975, 0, 0] RGB=[249,249,249] @ MCU[ 49, 50]
Finished Decoding SCAN Data
Number of RESTART markers decoded: 61
Next position in scan buffer: Offset 0x0004907A.1
*** Marker: EOI (End of Image) (xFFD9) ***
OFFSET: 0x0004907B
*** Embedded JPEG Thumbnail ***
Offset: 0x000002DC
Length: 0x00001459 (5209)
* Embedded Thumb Marker: SOI
* Embedded Thumb Marker: APP0
Length = 16
* Embedded Thumb Marker: APP13
Length = 12
* Embedded Thumb Marker: APP14
Length = 14
* Embedded Thumb Marker: DQT
Length = 132
----
Precision=0 bits
Destination ID=0 (Luminance)
DQT, Row #0: 12 8 8 12 17 21 24 17
DQT, Row #1: 8 9 9 11 15 19 12 12
DQT, Row #2: 8 9 10 12 19 12 12 12
DQT, Row #3: 12 11 12 21 12 12 12 12
DQT, Row #4: 17 15 19 12 12 12 12 12
DQT, Row #5: 21 19 12 12 12 12 12 12
DQT, Row #6: 24 12 12 12 12 12 12 12
DQT, Row #7: 17 12 12 12 12 12 12 12
----
Precision=0 bits
Destination ID=1 (Chrominance)
DQT, Row #0: 13 11 13 16 20 20 17 17
DQT, Row #1: 11 14 14 14 14 12 12 12
DQT, Row #2: 13 14 14 14 12 12 12 12
DQT, Row #3: 16 14 14 12 12 12 12 12
DQT, Row #4: 20 14 12 12 12 12 12 12
DQT, Row #5: 20 12 12 12 12 12 12 12
DQT, Row #6: 17 12 12 12 12 12 12 12
DQT, Row #7: 17 12 12 12 12 12 12 12
* Embedded Thumb Marker: SOF
Frame header length = 17
Precision = 8
Number of Lines = 120
Samples per Line = 160
Image Size = 160 x 120
* Embedded Thumb Marker: DRI
Length = 4
* Embedded Thumb Marker: DHT
Length = 319
* Embedded Thumb Marker: SOS
Skipping scan data
Skipped 4668 bytes
* Embedded Thumb Marker: EOI
* Embedded Thumb Signature: 01C2DDA29A1B5DCCD5E217CF9C558A62
*** Searching Compression Signatures ***
Signature: 01C1158E443D1C90F302FF6BE49DDD87
Signature (Rotated): 01C1158E443D1C90F302FF6BE49DDD87
File Offset: 0 bytes
Chroma subsampling: 1x1
EXIF Make/Model: OK [Nokia] [E72-1]
EXIF Makernotes: NONE
EXIF Software: OK [Adobe Photoshop CS4 Macintosh]
Searching Compression Signatures: (3327 built-in, 0 user(*))
EXIF.Make/Software EXIF.Model Quality Subsamp Match?
------------------ ---------- ------- --------------
SW :[Adobe Photoshop] [ ][Save As 12] [ ]
NOTE: Photoshop IRB detected
NOTE: EXIF Software field recognized as from editor
Based on the analysis of compression characteristics and EXIF metadata:
ASSESSMENT: Class 1 - Image is processed/edited
-
Hay otra inspeccion que se puede llevar a cabo. Se llama Image Error Level Analysis. La idea es simple: la "textura" de la compresion del JPG varia con el numero de veces que se salva una foto y con la calidad. Es muy dificil que si se pega parte de una imagen JPG en otra ambas "texturas" sean iguales. Esta tecnica provee una imagen en falso color donde las las imagenes menos comprimidas resaltan. Aqui esta el
Image Error Level Analysis
pareciera que
las letras amarillas fueran un agregado reciente 
.
What is going on here?
Error level analysis can help you work out if a photo has been digitally
altered. Photos in a jpeg file format actually lose quality each time they are
resaved. We can take advantage of this to try and work out if an image has been
digitally manipulated.
For instance, if you have a jpeg photo at 90% quality, and resave it, again
at 90% quality, you will end up with an image at 90% of 90% (so, 81% quality).
If now, you were to copy and paste an element from a different photo into your
current photo, you can end up with sections of the image at differing quality
levels. This happens because some parts have been resaved three times, whilst
some parts may have only been saved once.
If the image has had no alterations to it, all parts of the photo will be at
the same quality.
How does it work?
Error level analysis allows you see to see the difference in quality level,
represented by brightness. Things which are very bright have been edited most
recently, whilst duller parts have been resaved multiple times. This allows you
to see not just which parts of the image have been changed, but in what order
the changes occurred.
entonces, no solo no corresponde la fecha sino que esa foto quiza ni sea una bomba de racimo!, quiza sea un tubo con las letras amarillas pegadas con photoshop!!!.
Una manera de confirmar esto sería medir el angostamiento de las letras segun su posición en el tubo. Deben seguir la ley matemática de una proyección sobre una superficie cilíndrica.
¡Son de 4ta!, se quieren quedar con Libia y ni siquiera trabajan en esto
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