7/6/2023 0 Comments Djvulibre does not open fileerrorĮRROR: Command errored out with exit status 1:Ĭommand: 'c:\python39\python.exe' 'C:\Users\bette\AppData\Roaming\Python\Python39\site-packages\pip\_vendor\pep517\_in_process.py' build_wheel 'C:\Users\bette\AppData\Local\Temp\tmpuwzd3c74'Ĭwd: C:\Users\bette\AppData\Local\Temp\pip-install-gkcz217u\tulipy_8179e3516bd64c689a0168ed407c13fcĬopying tulipy\_init_.py -> build\lib.win-amd64-3.9\tulipy Requirement already satisfied: numpy in c:\users\bette\appdata\roaming\python\python39\site-packages (from tulipy) (1.19.5)īuilding wheels for collected packages: tulipyīuilding wheel for tulipy (PEP 517). Using cached tulipy-0.4.0.tar.gz (110 kB) I need tulipy for a project I'm working on, so I can't use any alternatives. I tried reinstalling VS Build Tools, but that doesn't seem to help either. I've installed numerous other pip based programs with no issues. I am trying to install tulipy using pip on a Windows machine. But although I primarily work on a Linux system, the scanning/conversion process includes commercial software running on a Windows box that gives me even better compression results than the open DjVuLibre library does (as well as OCR without an additional program).So I have checked every post that relates to this issue and I still can't seem to make this work. I must say I really like the DjVu concepts, and love the superior quality/filesize ratio, compared to scans in other file formats I have used. My lack of programming experience: I have been programming C since the late 80's-one of the first commercial things I developed in C was a library for creating GIF files in 1987-and have used Python since the mid 90's). This resulted in the DJVU OCR extraction program included in Calibre. I spent a few days getting the Python implementation to work, analysing the intransparent program flow of the library, all the while comparing the output with results from djvutxt and bzz. I settled for a minimal Python implementation for that piece, as I could not get a Python program to hook up to the C libraries in a reasonable amount of time. I analysed the DjVuLibre software some time ago, to extract OCR-ed text. This gives a small advantage over more standard compression schemes, but this is dwarfed by the conceptual better handling of compression of the images through the use of wavelet encoding and individually compressed layers. The encoder is similar to bzip2 but has its own, DjVu specific, implementation. To complicate things, the bytestreams in the DjVu file format are compressed using a Burrows Wheeler encoder. The libdjvu being a C library makes it less portable and less accessible for being called from other languages (e.g. That framework, in the form of libdjvu, is however used in all of the DjVuLibre tools ( bzz. that include the substring DJVU) in the framework. I conclude that on not having encountered the framework anywhere else, as well as specific names of classes, etc. It is C based code that builds on a framework that seems to be generically usable, but is probably DjVuLibre specific. The DjVuLibre software has several characteristics that make it difficult to port. This hinders other software developers adapting their software to support DjVu and even more so In my opinion the relative inaccessibility of DjVu's libdjvu, including having their own bytestream compression contributed to the low acceptance of the DjVu format over the years and not patent issues.
0 Comments
Leave a Reply. |