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메타 데이터가없는 원시 jpeg 데이터를 가져오고 싶습니다. jpeg "표준"을 보면서 매우 혼란 스럽습니다.원시 jpeg 데이터를 얻는 방법 (메타 태그/독점 마커가 없음)
마커 "트리"에 대한 나의 이해가 얼마나 정확합니까?
0xFFD8 - Identifies the file as an image
0xFFE? - EXIF, JFIF, SPIFF, ICC, etc
0x???? - the length of the tag
0xFFD8 - Start of Image
0xFFE0 - should follow SOI as per spec, but often preceded by comments ???
0x???? - Matrices, tags, random data ???
There are never other markers in-between these markers?
Or these include the matrices and such?
0xFFDA - Start of Stream - This is what I want, yes?
0xXXXX - length of stream
0xFFD9 - End of Stream (EOI)
0x???? - Comment tags, extra exif, jfif info???
0xFFD9 - End of Image
0xFF00 - escaped 0xFF, not to be confused with a marker
이되었습니다 내 독서 재질 : SOS (0xFFDA) 게다가
http://en.wikipedia.org/wiki/JPEG
http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/JPEG.html
http://www.media.mit.edu/pia/Research/deepview/exif.html
http://www.faqs.org/faqs/jpeg-faq/part1/section-15.html