728x90 헤더1 JPEG 포멧 헤더 정보 Start of Image (SOI) marker -- two bytes (FFD8) JFIF marker (FFE0) length -- two bytes identifier -- five bytes: 4A, 46, 49, 46, 00 (the ASCII code equivalent of a zero terminated "JFIF" string) version -- two bytes: often 01, 02 the most significant byte is used for major revisions the least significant byte for minor revisions units -- one byte: Units for the X and Y densities 0 => no units, X.. 2007. 4. 16. 이전 1 다음 728x90