On 2024-07-13 11:56 +0200, Ulf Zibis via Tiff wrote: > [..] > > Btw: I do not see that PDF is a vector image in general. In my understanding > PDF is a container format, holding any kind of formats and encodings. >
Hi Ulf, PDF is no container format, but a binary representation of (a subset of) PostScript. PostScript is a page description language, primarily handling vector graphics at different levels of abstraction. As a (Turing complete) programming language, it is also capable of handling binary data such as raster images. In fact, raster graphics in PostScript and PDF are ‘printed’ by plotting a vector graphic rectangle for each pixel. PDF/PostScript interpreters such as GhostScript are sometimes referred to as ‘raster image processor’ as they plot vector graphic elements as described in the PDF or PostScript file to the ‘canvas’ of a raster image. Ludolf -- Ludolf Holzheid [ˈluː.dɔlf ˈhɔlt͡s.haɪ̯d] Heinrichstraße 6 [ˈhaɪ̯n.ʁɪçˌʃtʁaː.sə 6] 68642 Bürstadt [68642 ˈbyːɐ̯.ʃtat] _______________________________________________ Tiff mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/tiff
