30 May 2011

[Phân tích] Khám phá bỉ ẩn sau file ảnh của bạn


Bài viết liên quan:

Có rất nhiều thông tin ẩn chứa sau 1 bức ảnh.
Bạn tự khám phá nhé, mình sẽ hướng dẫn:
1. Công cụ
http://regex.info//exif.cgi
http://www.imagemagick.org/script/index.php
http://www.sno.phy.queensu.ca/~phil/exiftool/
http://www.flickr.com/groups/stolencamerafinder/
2. Demo
Kết quả:

Basic Image Information
File Comment:CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), quality = 95
File:470 × 511 JPEG
44,610 bytes (0.043 megabytes)     Image compression: 94%
Color Encoding:Embedded color profile: “sRGB”
Image URL:http://1.bp.blogspot.com/--6iGsdF4-D4/TeNrb2ZpidI/AAAAAAAAAeY/_48whvburXM/s1600/toiphammaytinh.jpg
JFIF
JFIF Version1.01
Resolution72 pixels/inch
File — basic information derived from the file.
File TypeJPEG
MIME Typeimage/jpeg
CommentCREATOR: gd-jpeg v1.0 (using IJG JPEG v62), quality = 95
Encoding ProcessBaseline DCT, Huffman coding
Bits Per Sample8
Color Components3
File Size44 kB
Image Size511 × 470
Y Cb Cr Sub SamplingYCbCr4:2:0 (2 2)
ICC_Profile — this block of data describes the color space used to encode pixel colors.   3.0k-bytes (3,048 bytes).
It is a second-generation sRGB color profile, with black-point scaling. It is the sRGB_IEC61966-2-1_black_scaled.icc mentioned on this ICC page.
Profile CMM Type
Profile Version2.0.0
Profile ClassDisplay Device Profile
Color Space DataRGB
Profile Connection SpaceXYZ
Profile Date Time2009:03:27 21:36:31
2 years, 2 months, 2 days, 5 hours, 27 minutes, 27 seconds ago
Profile File Signatureacsp
Primary PlatformUnknown ()
CMM FlagsNot Embedded, Independent
Device Manufacturer
Device Model
Device AttributesReflective, Glossy, Positive, Color
Rendering IntentPerceptual
Connection Space Illuminant0.9642 1 0.82491
Profile Creator
Profile ID29f83ddeaff255ae7842fae4ca83390d
Profile DescriptionsRGB IEC61966-2-1 black scaled
Blue Matrix Column0.14307 0.06061 0.7141
Blue Tone Reproduction Curve(2,060 bytes binary data)
Device Model DescIEC 61966-2-1 Default RGB Colour Space - sRGB
Green Matrix Column0.38515 0.71687 0.09708
Green Tone Reproduction Curve(2,060 bytes binary data)
Luminance0 80 0
Measurement ObserverCIE 1931
Measurement Backing0 0 0
Measurement GeometryUnknown (0)
Measurement Flare0%
Measurement IlluminantD65
Media Black Point0.01205 0.0125 0.01031
Red Matrix Column0.43607 0.22249 0.01392
Red Tone Reproduction Curve(2,060 bytes binary data)
TechnologyCathode Ray Tube Display
Viewing Cond DescReference Viewing Condition in IEC 61966-2-1
Media White Point0.9642 1 0.82491
Profile CopyrightCopyright International Color Consortium, 2009
Chromatic Adaptation1.04791 0.02293 -0.0502 0.0296 0.99046 -0.01707 -0.00925 0.01506 0.75179

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