ISO/IEC 15948:2004
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The latest, up-to-date edition.
Information technology Computer graphics and image processing Portable Network Graphics (PNG): Functional specification
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Language(s)
English
Published date
03-03-2004
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ISO/IEC 15948:2004 specifies a datastream and an associated file format, Portable Network Graphics (PNG, pronounced "ping"), for a lossless, portable, compressed individual computer graphics image transmitted across the Internet. Indexed-colour, greyscale, and truecolour images are supported, with optional transparency. Sample depths range from 1 to 16 bits. PNG is fully streamable with a progressive display option. It is robust, providing both full file integrity checking and simple detection of common transmission errors. PNG can store gamma and chromaticity data as well as a full ICC colour profile for accurate colour matching on heterogenous platforms. ISO/IEC 15948:2004 defines the Internet Media type "image/png". The datastream and associated file format have value outside of the main design goal.
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Current
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| Standards | Relationship |
| INCITS/ISO/IEC 15948 : 2009(R2014) | Identical |
| AS ISO/IEC 15948:2015 | Identical |
| NEN ISO/IEC 15948 : 2004 | Identical |
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| CEN ISO/TS 18234-3:2013 | Intelligent transport systems - Traffic and travel information via transport protocol experts group, generation 1 (TPEG1) binary data format - Part 3: Service and network information (TPEG1-SNI) (ISO/TS 18234-3:2013) |
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