Originally posted by CHRLZ
First, may I point out that I'm not disputing that the images are or are not edited. I suspect not.
But unless you had access to the original media (did you?), I sincerely doubt that you can verify that they are unedited. If you do claim to have
some methodology of accessing a file on non-original media and verifying it is unedited, please provide the details of what you did to confirm
that.
Happy to be proven wrong...
Start Offset: 0x00000000
*** Marker: SOI (xFFD8) ***
OFFSET: 0x00000000
*** Marker: APP1 (xFFE1) ***
OFFSET: 0x00000002
length = 844
Identifier = [Exif]
Identifier TIFF = 0x[49492A00 08000000]
Endian = Intel (little)
TAG Mark x002A = 0x002A
EXIF IFD0 @ Absolute 0x00000014
Dir Length = 0x0014
[Make ] = "Hewlett-Packard"
[Model ] = "HP Photosmart E330"
[XResolution ] = 102/1
[YResolution ] = 108/1
[ResolutionUnit ] = Inch
[Software ] = "Version 1.5100"
[DateTime ] = "2008:02:09 17:25:45"
[YCbCrPositioning ] = Co-sited
[ReferenceBlackWhite ] = 0/1, 255/1, 128/1, 255/1, 128/1, 255/1
[ExifOffset ] = @ 0x0186
[GPSOffset ] = @ 0x0308
[ExposureMode ] = Auto exposure
[WhiteBalance ] = Auto white balance
[SceneCaptureType ] = Standard
Offset to Next IFD = 0x00000000
EXIF SubIFD @ Absolute 0x00000192
Dir Length = 0x0017
[ExposureTime ] = 16667/1000000 s
[FNumber ] = F4.5
[ExposureProgram ] = Normal program
[ISOSpeedRatings ] = 200
[ExifVersion ] = 02.20
[DateTimeOriginal ] = "2008:02:09 17:25:45"
[DateTimeDigitized ] = "2008:02:09 17:25:45"
[ComponentsConfiguration ] = [Y Cb Cr .]
[ShutterSpeedValue ] = 590/100
[ApertureValue ] = 433/100
[BrightnessValue ] = 4243/1000
[ExposureBiasValue ] = 0.00 eV
[MaxApertureValue ] = 433/100
[MeteringMode ] = CenterWeightedAverage
[LightSource ] = Shade
[Flash ] = Flash fired
[FocalLength ] = 6 mm
[FlashPixVersion ] = 01.00
[ColorSpace ] = sRGB
[ExifImageWidth ] = 2576
[ExifImageHeight ] = 1920
[SensingMethod ] = One-chip color area sensor
[FileSource ] = DSC
EXIF GPSIFD @ Absolute 0x00000314
Dir Length = 0x0001
[GPSVersionID ] = 2.2.0.0
*** Marker: APP4 (xFFE4) ***
OFFSET: 0x00000350
length = 120
*** Marker: APP4 (xFFE4) ***
OFFSET: 0x000003CA
length = 516
*** Marker: APP4 (xFFE4) ***
OFFSET: 0x000005D0
length = 29088
*** Marker: DQT (xFFDB) ***
Define a Quantization Table.
OFFSET: 0x00007772
Table length = 67
----
Precision=8 bits
Destination ID=0 (Luminance)
DQT, Row #0: 2 2 2 2 2 2 2 2
DQT, Row #1: 2 2 2 2 2 2 2 2
DQT, Row #2: 2 2 2 2 2 2 2 2
DQT, Row #3: 2 2 2 2 2 2 2 2
DQT, Row #4: 2 2 2 2 2 2 2 2
DQT, Row #5: 2 2 2 2 2 2 2 2
DQT, Row #6: 2 2 2 2 2 2 2 2
DQT, Row #7: 2 2 2 2 2 2 2 2
Approx quality factor = 97.01 (scaling=5.99 variance=24.54)
*** Marker: DHT (Define Huffman Table) (xFFC4) ***
OFFSET: 0x000077B7
Huffman table length = 418
----
Destination ID = 0
Class = 0 (DC / Lossless Table)
Codes of length 01 bits (000 total):
Codes of length 02 bits (001 total): 00
Codes of length 03 bits (005 total): 01 02 03 04 05
Codes of length 04 bits (001 total): 06
Codes of length 05 bits (001 total): 07
Codes of length 06 bits (001 total): 08
Codes of length 07 bits (001 total): 09
Codes of length 08 bits (001 total): 0A
Codes of length 09 bits (001 total): 0B
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 (003 total): 00 01 02
Codes of length 03 bits (001 total): 03
Codes of length 04 bits (001 total): 04
Codes of length 05 bits (001 total): 05
Codes of length 06 bits (001 total): 06
Codes of length 07 bits (001 total): 07
Codes of length 08 bits (001 total): 08
Codes of length 09 bits (001 total): 09
Codes of length 10 bits (001 total): 0A
Codes of length 11 bits (001 total): 0B
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): 00 04 11
Codes of length 05 bits (003 total): 05 12 21
Codes of length 06 bits (002 total): 31 41
Codes of length 07 bits (004 total): 06 13 51 61
Codes of length 08 bits (003 total): 07 22 71
Codes of length 09 bits (005 total): 14 32 81 91 A1
Codes of length 10 bits (005 total): 08 23 42 B1 C1
Codes of length 11 bits (004 total): 15 52 D1 F0
Codes of length 12 bits (004 total): 24 33 62 72
Codes of length 13 bits (000 total):
Codes of length 14 bits (000 total):
Codes of length 15 bits (001 total): 82
Codes of length 16 bits (125 total): 09 0A 16 17 18 19 1A 25 26 27 28 29 2A 34 35 36
37 38 39 3A 43 44 45 46 47 48 49 4A 53 54 55 56
57 58 59 5A 63 64 65 66 67 68 69 6A 73 74 75 76
77 78 79 7A 83 84 85 86 87 88 89 8A 92 93 94 95
96 97 98 99 9A A2 A3 A4 A5 A6 A7 A8 A9 AA B2 B3
B4 B5 B6 B7 B8 B9 BA C2 C3 C4 C5 C6 C7 C8 C9 CA
D2 D3 D4 D5 D6 D7 D8 D9 DA E1 E2 E3 E4 E5 E6 E7
E8 E9 EA F1 F2 F3 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): 00 01
Codes of length 03 bits (001 total): 02
Codes of length 04 bits (002 total): 03 11
Codes of length 05 bits (004 total): 04 05 21 31
Codes of length 06 bits (004 total): 06 12 41 51
Codes of length 07 bits (003 total): 07 61 71
Codes of length 08 bits (004 total): 13 22 32 81
Codes of length 09 bits (007 total): 08 14 42 91 A1 B1 C1
Codes of length 10 bits (005 total): 09 23 33 52 F0
Codes of length 11 bits (004 total): 15 62 72 D1
Codes of length 12 bits (004 total): 0A 16 24 34
Codes of length 13 bits (000 total):
Codes of length 14 bits (001 total): E1
Codes of length 15 bits (002 total): 25 F1
Codes of length 16 bits (119 total): 17 18 19 1A 26 27 28 29 2A 35 36 37 38 39 3A 43
44 45 46 47 48 49 4A 53 54 55 56 57 58 59 5A 63
64 65 66 67 68 69 6A 73 74 75 76 77 78 79 7A 82
83 84 85 86 87 88 89 8A 92 93 94 95 96 97 98 99
9A A2 A3 A4 A5 A6 A7 A8 A9 AA B2 B3 B4 B5 B6 B7
B8 B9 BA C2 C3 C4 C5 C6 C7 C8 C9 CA D2 D3 D4 D5
D6 D7 D8 D9 DA E2 E3 E4 E5 E6 E7 E8 E9 EA F2 F3
F4 F5 F6 F7 F8 F9 FA
Total number of codes: 162
*** Marker: SOF0 (Baseline DCT) (xFFC0) ***
OFFSET: 0x0000795B
Frame header length = 17
Precision = 8
Number of Lines = 1920
Samples per Line = 2576
Image Size = 2576 x 1920
Raw Image Orientation = Landscape
Number of Img components = 3
Component[1]: ID=0x01, Samp Fac=0x21 (Subsamp 1 x 1), Quant Tbl Sel=0x00 (Lum: Y)
Component[2]: ID=0x02, Samp Fac=0x11 (Subsamp 2 x 1), Quant Tbl Sel=0x00 (Chrom: Cb)
Component[3]: ID=0x03, Samp Fac=0x11 (Subsamp 2 x 1), Quant Tbl Sel=0x00 (Chrom: Cr)
*** Marker: SOS (Start of Scan) (xFFDA) ***
OFFSET: 0x0000796E
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: 0x0000797C
Scan Decode Mode: Full IDCT (AC + DC)
Scan Data encountered marker 0xFFD9 @ 0x0022E554.0
Compression stats:
Compression Ratio: 6.58:1
Bits per pixel: 3.65:1
Huffman code histogram stats:
Huffman Table: (Dest ID: 0, Class: DC)
# codes of length 01 bits: 0 ( 0%)
# codes of length 02 bits: 3870 ( 5%)
# codes of length 03 bits: 70238 ( 91%)
# codes of length 04 bits: 1469 ( 2%)
# codes of length 05 bits: 979 ( 1%)
# codes of length 06 bits: 669 ( 1%)
# codes of length 07 bits: 53 ( 0%)
# codes of length 08 bits: 2 ( 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: 26250 ( 34%)
# codes of length 03 bits: 22149 ( 29%)
# codes of length 04 bits: 19592 ( 25%)
# codes of length 05 bits: 8228 ( 11%)
# codes of length 06 bits: 932 ( 1%)
# codes of length 07 bits: 86 ( 0%)
# codes of length 08 bits: 30 ( 0%)
# codes of length 09 bits: 13 ( 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: 1100454 ( 55%)
# codes of length 03 bits: 95233 ( 5%)
# codes of length 04 bits: 310911 ( 16%)
# codes of length 05 bits: 208772 ( 10%)
# codes of length 06 bits: 62948 ( 3%)
# codes of length 07 bits: 34219 ( 2%)
# codes of length 08 bits: 46833 ( 2%)
# codes of length 09 bits: 51230 ( 3%)
# codes of length 10 bits: 16706 ( 1%)
# codes of length 11 bits: 21890 ( 1%)
# codes of length 12 bits: 13043 ( 1%)
# codes of length 13 bits: 0 ( 0%)
# codes of length 14 bits: 0 ( 0%)
# codes of length 15 bits: 5508 ( 0%)
# codes of length 16 bits: 20851 ( 1%)
Huffman Table: (Dest ID: 1, Class: AC)
# codes of length 01 bits: 0 ( 0%)
# codes of length 02 bits: 325271 ( 29%)
# codes of length 03 bits: 217549 ( 19%)
# codes of length 04 bits: 190770 ( 17%)
# codes of length 05 bits: 106856 ( 9%)
# codes of length 06 bits: 77410 ( 7%)
# codes of length 07 bits: 24225 ( 2%)
# codes of length 08 bits: 49810 ( 4%)
# codes of length 09 bits: 69211 ( 6%)
# codes of length 10 bits: 32373 ( 3%)
# codes of length 11 bits: 14944 ( 1%)
# codes of length 12 bits: 269 ( 0%)
# codes of length 13 bits: 0 ( 0%)
# codes of length 14 bits: 4235 ( 0%)
# codes of length 15 bits: 1984 ( 0%)
# codes of length 16 bits: 11260 ( 1%)
YCC clipping in DC:
Y component: [255= 0]
Cb component: [255= 0]
Cr component: [255= 0]
RGB clipping in DC:
R component: [255= 0]
G component: [255= 0]
B component: [255= 0]
Brightest Pixel Search:
YCC=[ 1027, 0, 0] RGB=[255,255,255] @ MCU[110,207]
Finished Decoding SCAN Data
Number of RESTART markers decoded: 0
Next position in scan buffer: Offset 0x0022E554.0
*** Marker: EOI (End of Image) (xFFD9) ***
OFFSET: 0x0022E554
*** Searching Compression Signatures ***
Signature: 01E4DEC5DF580F8461F51E4430A0C612
Signature (Rotated): 01E4DEC5DF580F8461F51E4430A0C612
File Offset: 0 bytes
Chroma subsampling: 2x1
EXIF Make/Model: OK [Hewlett-Packard] [HP Photosmart E330]
EXIF Makernotes: NONE
EXIF Software: OK [Version 1.5100]
Searching Compression Signatures: (3327 built-in, 0 user(*) )
EXIF.Make / Software EXIF.Model Quality Subsamp Match?
------------------------- ----------------------------------- ---------------- --------------
SW :[IMatch ] [098 ]
SW :[IMatch ] [099 ]
SW :[IMatch ] [100 ]
Based on the analysis of compression characteristics and EXIF metadata:
ASSESSMENT: Class 2 - Image has high probability of being processed/edited
*** Additional Info ***
NOTE: Data exists after EOF, range: 0x0022E556-0x0022E652 (252 bytes)