¬¬. creo que lo resaltado debe hacerle entender no?
nop, sigo sin entender...
servido:
Filename: [D:\pics\paperc.jpg]
Filesize: [31703] Bytes
Start Offset: 0x00000000
*** Marker: SOI (xFFD8) ***
OFFSET: 0x00000000
*** Marker: APP0 (xFFE0) ***
OFFSET: 0x00000002
length = 16
identifier = [JFIF]
version = [1.2]
density = 100 x 100 (aspect ratio)
thumbnail = 0 x 0
*** Marker: APP12 (xFFEC) ***
OFFSET: 0x00000014
length = 17
Identifier = [Ducky]
Photoshop Save For Web Quality = [60]
*** Marker: APP14 (xFFEE) ***
OFFSET: 0x00000027
length = 14
*** Marker: DQT (xFFDB) ***
Define a Quantization Table.
OFFSET: 0x00000037
Table length = 132
----
Precision=8 bits
Destination ID=0 (Luminance)
DQT, Row #0: 6 4 4 6 9 11 12 16
DQT, Row #1: 4 5 5 6 8 10 12 12
DQT, Row #2: 4 5 5 6 10 12 14 19
DQT, Row #3: 6 6 6 11 12 15 19 28
DQT, Row #4: 9 8 10 12 16 20 27 31
DQT, Row #5: 11 10 12 15 20 27 31 31
DQT, Row #6: 12 12 14 19 27 31 31 31
DQT, Row #7: 16 12 19 28 31 31 31 31
Approx quality factor = 85.59 (scaling=28.82 variance=62.09)
----
Precision=8 bits
Destination ID=1 (Chrominance)
DQT, Row #0: 7 7 13 24 26 31 31 31
DQT, Row #1: 7 12 16 21 31 31 31 31
DQT, Row #2: 13 16 17 31 31 31 31 31
DQT, Row #3: 24 21 31 31 31 31 31 31
DQT, Row #4: 26 31 31 31 31 31 31 31
DQT, Row #5: 31 31 31 31 31 31 31 31
DQT, Row #6: 31 31 31 31 31 31 31 31
DQT, Row #7: 31 31 31 31 31 31 31 31
Approx quality factor = 82.89 (scaling=34.23 variance=63.13)
*** Marker: SOF0 (Baseline DCT) (xFFC0) ***
OFFSET: 0x000000BD
Frame header length = 17
Precision = 8
Number of Lines = 615
Samples per Line = 567
Image Size = 567 x 615
Raw Image Orientation = Portrait
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: DHT (Define Huffman Table) (xFFC4) ***
OFFSET: 0x000000D0
Huffman table length = 206
----
Destination ID = 0
Class = 0 (DC / Lossless Table)
Codes of length 01 bits (001 total): 00
Codes of length 02 bits (000 total):
Codes of length 03 bits (002 total): 05 06
Codes of length 04 bits (003 total): 04 07 08
Codes of length 05 bits (000 total):
Codes of length 06 bits (003 total): 02 03 09
Codes of length 07 bits (001 total): 01
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: 010
----
Destination ID = 1
Class = 0 (DC / Lossless Table)
Codes of length 01 bits (001 total): 00
Codes of length 02 bits (000 total):
Codes of length 03 bits (003 total): 01 02 04
Codes of length 04 bits (001 total): 03
Codes of length 05 bits (001 total): 05
Codes of length 06 bits (001 total): 06
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: 007
----
Destination ID = 0
Class = 1 (AC Table)
Codes of length 01 bits (000 total):
Codes of length 02 bits (001 total): 00
Codes of length 03 bits (004 total): 01 02 03 04
Codes of length 04 bits (001 total): 05
Codes of length 05 bits (002 total): 11 06
Codes of length 06 bits (003 total): 21 12 07
Codes of length 07 bits (003 total): 31 41 13
Codes of length 08 bits (007 total): 51 61 71 22 32 14 08
Codes of length 09 bits (007 total): 81 91 A1 42 52 62 72
Codes of length 10 bits (007 total): B1 82 92 23 33 43 15
Codes of length 11 bits (008 total): C1 A2 B2 C2 53 63 73 93
Codes of length 12 bits (006 total): 83 B3 24 34 25 16
Codes of length 13 bits (007 total): D1 A3 C3 44 64 B4 26
Codes of length 14 bits (005 total): 84 35 75 17 37
Codes of length 15 bits (009 total): F0 D3 54 74 94 45 55 56 18
Codes of length 16 bits (000 total):
Total number of codes: 070
----
Destination ID = 1
Class = 1 (AC Table)
Codes of length 01 bits (001 total): 00
Codes of length 02 bits (000 total):
Codes of length 03 bits (002 total): 01 02
Codes of length 04 bits (001 total): 03
Codes of length 05 bits (001 total): 11
Codes of length 06 bits (004 total): 21 31 12 04
Codes of length 07 bits (005 total): 41 51 61 71 32
Codes of length 08 bits (010 total): 81 91 A1 B1 C1 D1 22 42 13 14
Codes of length 09 bits (005 total): 52 62 72 33 05
Codes of length 10 bits (003 total): F0 E1 23
Codes of length 11 bits (002 total): 82 A2
Codes of length 12 bits (004 total): 92 43 53 34
Codes of length 13 bits (005 total): B2 E2 63 24 44
Codes of length 14 bits (005 total): F1 C2 73 A3 06
Codes of length 15 bits (001 total): 16
Codes of length 16 bits (000 total):
Total number of codes: 049
*** Marker: SOS (Start of Scan) (xFFDA) ***
OFFSET: 0x000001A0
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: 0x000001AE
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 @ 0x00007BD5.0
Compression stats:
Compression Ratio: 33.45:1
Bits per pixel: 0.72:1
Huffman code histogram stats:
Huffman Table: (Dest ID: 0, Class: DC)
# codes of length 01 bits: 4362 ( 80%)
# codes of length 02 bits: 0 ( 0%)
# codes of length 03 bits: 457 ( 8%)
# codes of length 04 bits: 432 ( 8%)
# codes of length 05 bits: 0 ( 0%)
# codes of length 06 bits: 172 ( 3%)
# codes of length 07 bits: 44 ( 1%)
# 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: 9635 ( 88%)
# codes of length 02 bits: 0 ( 0%)
# codes of length 03 bits: 1065 ( 10%)
# codes of length 04 bits: 163 ( 1%)
# codes of length 05 bits: 56 ( 1%)
# codes of length 06 bits: 15 ( 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: 5455 ( 19%)
# codes of length 03 bits: 15652 ( 55%)
# codes of length 04 bits: 1677 ( 6%)
# codes of length 05 bits: 1862 ( 7%)
# codes of length 06 bits: 1284 ( 5%)
# codes of length 07 bits: 723 ( 3%)
# codes of length 08 bits: 966 ( 3%)
# codes of length 09 bits: 400 ( 1%)
# codes of length 10 bits: 235 ( 1%)
# codes of length 11 bits: 125 ( 0%)
# codes of length 12 bits: 49 ( 0%)
# codes of length 13 bits: 26 ( 0%)
# codes of length 14 bits: 12 ( 0%)
# codes of length 15 bits: 9 ( 0%)
# codes of length 16 bits: 0 ( 0%)
Huffman Table: (Dest ID: 1, Class: AC)
# codes of length 01 bits: 10934 ( 61%)
# codes of length 02 bits: 0 ( 0%)
# codes of length 03 bits: 3406 ( 19%)
# codes of length 04 bits: 636 ( 4%)
# codes of length 05 bits: 496 ( 3%)
# codes of length 06 bits: 1023 ( 6%)
# codes of length 07 bits: 547 ( 3%)
# codes of length 08 bits: 576 ( 3%)
# codes of length 09 bits: 136 ( 1%)
# codes of length 10 bits: 49 ( 0%)
# codes of length 11 bits: 19 ( 0%)
# codes of length 12 bits: 13 ( 0%)
# codes of length 13 bits: 10 ( 0%)
# codes of length 14 bits: 5 ( 0%)
# codes of length 15 bits: 1 ( 0%)
# codes of length 16 bits: 0 ( 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=[108] (range: 0..255)
Brightest Pixel Search:
YCC=[ 1014, 0, 0] RGB=[254,254,254] @ MCU[ 51, 11]
Finished Decoding SCAN Data
Number of RESTART markers decoded: 0
Next position in scan buffer: Offset 0x00007BD4.7
*** Marker: EOI (End of Image) (xFFD9) ***
OFFSET: 0x00007BD5
*** Searching Compression Signatures ***
Signature: 01C26040DB5181BA3B5CD7A813FAD209
Signature (Rotated): 01C26040DB5181BA3B5CD7A813FAD209
File Offset: 0 bytes
Chroma subsampling: 1x1
EXIF Make/Model: NONE
EXIF Makernotes: NONE
EXIF Software: NONE
Searching Compression Signatures: (3327 built-in, 0 user(*) )
EXIF.Make / Software EXIF.Model Quality Subsamp Match?
------------------------- ----------------------------------- ---------------- --------------
SW :[Adobe Photoshop ] [Save For Web 060]
NOTE: Photoshop IRB detected
Based on the analysis of compression characteristics and EXIF metadata:
ASSESSMENT: Class 1 - Image is processed/edited