On Sunday, April 2, 2023 at 3:55:31 PM UTC-4 tbp1...@gmail.com wrote:
It seems to me that the main challenge would be for Leo to know just what to have in the package. External files would be easy, but for example image files - how to know about them could be a real challenge. I'm thinking that an outline could contain an @resources node, where the user could add anything that Leo didn't know about. Not ideal, but perhaps necessary. If you limit the scope of your work to compression and decompression of files, you might consider the libraries available for 7-Zip <https://en.wikipedia.org/wiki/7-Zip> - support for operating ystems other than Windows requires one of the variants described there. If you care about handling individual images or metadata from them, your task is much greater and a great challenge. I know something of that challenge, since I earn my living supporting software for life science microscopy. The number of formats used in that field is enormous, the requirements that must be during acquisition are distinct from those required thereafter for retrieval and analysis. Acquisition can involve a great number of individual images, enough that efficient writing to disk and reading back from disk can require a number of individual files, with a separate file that describes the entire dataset. Not that you would necessarily wish to use the formats designed for life science microscopy of the open source software available for reading and writing them, but here are links that might be of interest. OME-TIFF and OME-Big-TIFF: these support individual files with a great number of images; the OME-Big-TIFF variant supports files larger than four gigabytes. These, among others, are described under "OME Model and File Formats <https://docs.openmicroscopy.org/ome-model/latest/>". Information specific to OME-TIFF <https://bio-formats.readthedocs.io/en/latest/formats/ome-tiff.html> is available; documentation for the OME-TIFF file structure <https://docs.openmicroscopy.org/ome-model/latest/ome-tiff/file-structure.html> is available also. Bio-Formats <https://bio-formats.readthedocs.io/en/latest/> is a standalone Java library for reading and writing life sciences image file formats. It is capable of parsing both pixels and metadata for a large number of formats, as well as writing to several formats. C++ code is available; I cannot speak to its condition and compliance with the current standard for the format. -- You received this message because you are subscribed to the Google Groups "leo-editor" group. To unsubscribe from this group and stop receiving emails from it, send an email to leo-editor+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/leo-editor/2df6065c-b24a-4400-af40-7b21f2b45c09n%40googlegroups.com.
