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The bytes s1 and s2 are taken together to represent a big-endian 16-bit integer specifying the length of the following "data bytes" plus the 2 bytes used to represent the length. In other words, s1 and s2 specify the number of the following data bytes as 256 ⋅ s 1 + s 2 − 2 {\displaystyle 256\cdot s1+s2-2} .
nuru ASCII/ANSI image and palette files [15] 53 44 50 58 (big-endian format) SDPX: 0 dpx SMPTE DPX image: 58 50 44 53 (little-endian format) XPDS: 76 2F 31 01: v/1␁ 0 exr OpenEXR image: 42 50 47 FB: BPGû: 0 bpg Better Portable Graphics format [16] FF D8 FF DB: ÿØÿÛ: 0 jpg jpeg JPEG raw or in the JFIF or Exif file format [17] FF D8 FF E0 ...
Codestream packing: All entropy-coded data are packed into a linear stream of bits (grouped in byte multiples) along with all of the required image metadata. This sequence of bytes is called the codestream and its high-level syntax is based on the typical JPEG markers and marker segments syntax. [29]
Exchangeable image file format (officially Exif, according to JEIDA/JEITA/CIPA specifications) [5] is a standard that specifies formats for images, sound, and ancillary tags used by digital cameras (including smartphones), scanners and other systems handling image and sound files recorded by digital cameras.
A JPEG image consists of a sequence of segments, each beginning with a marker, each of which begins with a 0xFF byte, followed by a byte indicating what kind of marker it is. Some markers consist of just those two bytes; others are followed by two bytes (high then low), indicating the length of marker-specific payload data that follows.
push a byte onto the stack as an integer value: breakpoint ca 1100 1010 reserved for breakpoints in Java debuggers; should not appear in any class file caload 34 0011 0100 arrayref, index → value load a char from an array castore 55 0101 0101 arrayref, index, value → store a char into an array checkcast c0 1100 0000 2: indexbyte1, indexbyte2
Compiled Java class files and Mach-O binaries start with hex CAFEBABE. When compressed with Pack200 the bytes are changed to CAFED00D. GIF image files have the ASCII code for "GIF89a" (47 49 46 38 39 61) or "GIF87a" (47 49 46 38 37 61) JPEG image files begin with FF D8 and end with FF D9.
Aperture - Image management application and RAW developer. Reads/writes XMP sidecar files to (batch) import/export image metadata (Mac OS X). Bibble5 can read/write XMP information for RAW, JPG and TIFF files (Microsoft Windows, Mac OS X, Linux). Bridge - can read/write and batch edit XMP metadata (Microsoft Windows, Mac OS X)