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[REBOL] Re: PNG => was Re: Re: Image processing and embedding metadata in images

From: jasonic:panix at: 12-Nov-2001 23:00

Well for any who may be interested, here's some more I dug up: The iTXt chunk (international/Unicode text) is ripe for all sorts of uses. As you might expect, several enterprising people have written toolkits for exploring this. Here are a couple to get going: Pngcrush is an optimizer for PNG (Portable Network Graphics) files. It can be run from a commandline in an MSDOS window, or from a UNIX or LINUX commandline. [OpenSource] pngmeta is a command-line program that extracts metadata (such as text annotations) from PNG images and formats it as HTML, SOIF, RDF/XML, or simple keyword/value pairs. It can be used as part of a CGI script, for example. [GPL C++ source included] TweakPNG is a low-level utility for examining and modifying PNG image files. It runs on Windows 95 (or 98 or higher) or Windows NT. Nice interface, easy to use... For example inserting a fresh iTXt and pasting in a REBOL program! do %image.png ..becomes an interesting and viable proposition for X-internet. Images which can: - email or upload themselves - load directly into wikilogs [VANILLA] - associate intelligently with news [time] and map [locations] systems - enable smart and dumb i2i [image-to-image] applications - associate to others in load/play sequences by keyword, name, author, date, location, url, subscriber, popularity, context ... - ??? A REBOL Port of TweakPNG's iTXt fatures are needed. Is anyone into Rebolizing a few lines of C++ ?? Jason