I was trying to convert a pdf to images using a python script and Wand with ImageMagick bindings. But, I really want to avoid using Ghostscript? Is it possible to do because the installation of Wand doesn't mention anything about Ghostscript but it seems that it is mandatory to have the conversion from pdf to an image using python. Has anyone tried doing the same?
There is also a similar issue open in the Wand git repo (https://github.com/dahlia/wand/issues/319). This means that it is really not possible to convert pdf to png without Ghostscript?
Can this be an issue based on OS and ImageMagick version? I am using MacOS and ImageMagick#6. For some reason, I was not able to run the latest ImageMagick(7.1) on Mac. So, if anyone has tried on a different OS or with latest version of ImageMagick, inputs are welcome.
ImageMagick ultimately pipes out to Ghostscript for the conversion.
And poorly as well. I just had this issue a few months ago in PHP script, where crystal reports created badly formed PDF files, that ImageMagick attempts to fix, and throws a java error, but Ghostscript can convert it just fine if ImageMagick is bypassed.
Execute ghostscript with this command line
-dJPEGQ=95 -r600 -dNOPAUSE -q -sDEVICE=jpeg -dBATCH -sOutputFile="OutputImage_%d.jpeg" "SourcePDFPath.pdf" to turn a PDF into multiple jpegs
Related
I used wand API of ImageMagick in python for ML project ,I want to change my coding file into one executable file so that I can share it to my friends but I got lots of difficulties to pack ImageMagick in one executable file, that's why I want to use wand without ImageMagick.
if you Answer this, then it will help me a lot.
Thankyou. I
I am looking for an OCR implementation, preferrably in Python that would be able to extract text from a scanned pdf (printed machine written text). However due to a company policy and security reason I am not able to download any executable files (.exe), therefore any Python libraries building upon Tesseract currently don't work for me... Did anybody else also encounter this problem? (I guess its pretty common in big companies). I would be looking for a work-around, either a way to build tesseract without downloading a .exe file or an alternative OCR implementation.
Thanks already!
I am working on a Windows 7 machine..
Unfortunately Pytesseract is only a wrapper around a Tesseract binary (.exe on Windows), so you will probably have to beg and plead your IT to allow it. An option might be to build Tesseract from source yourself, so then you haven't downloaded a "random" .exe...
Another option is, of course, to use an online OCR API, but if security's that tight (and I suppose budgets are too), that might not work for you either.
I want to import a png using tkinter. I have seen many tutorials to use PhotoImage but it does not accept the .png file format. Moreover, I cannot use Pillow as this program is for use in my school and my school only has the modules that come with python. Can someone suggest a way to do this?
Tkinter only supports 3 file formats off the bat which are GIF, PGM, and PPM. You will need to convert the files to .GIF then load them in using tkinter.
There are libraries such as Python Imaging Library (PIL), however it might not be allowed in your school to use it.
Hopefully your school allows Photoshop, GIMP or any image editing software to allow you to convert, but I am sure there are plenty of online programs.
I installed Opencv in a Docker container so that I can upload the linux binaries for support a git project that isn't mine. I need it to run python 3.6 and opencv 3.x, which all seems to be working fine. However, the directory containing the cv2 folder only has one .so file: cv2.cpython-36m-x86_64-linux-gnu.so . The project I'm trying to contribute to has the build for opencv py2.7, and that folder has dozens of .so files for many relevant opencv packages, so I feel like something is wrong. Can anyone help?
And here's the link to the project I am trying to add support to.
https://github.com/Miserlou/lambda-packages/tree/master/lambda_packages/OpenCV
Assuming you don't want to unpack the tar, here's how the inside looks for the python 2.7 package
There is nothing wrong as long as you can import it in python and utilize it's functionality. I'm using ROS Kinetic for my research, which comes with a built in release of opencv. It also has just one cv2.so file and it's working perfectly fine.
I'm trying to capture a video using a webcam then encoding it as an mp42 asf file on a windows machine.
I managed to encode an mpeg2 file using pymedia but pymedia doesn't seem to support mp42.
I installed opencv and tried to use the python wrapper but python keeps crashing everytime I create a writer. Even with just captureing images, it seems too slow and unreliable.
Does anyone know of a python module that allow me to create mp42 files?
Thanks,
-Ray
According to this : http://forums.creativecow.net/readpost/291/493 mp42 is a version 2 of MP4 ISO file format. (Explained here)
Where as according to this wiki link, it is an old Microsoft's (proprietary) MPEG4 codec version 2. This was built-in under VFW (video for windows). I think FFMPEG allows encoding using -vcodec MSMPEGv2 (or something like that) as per this link: http://ffmpeg.org/general.html#Video-Codecs. Though i am not sure if this is same.
If FFMPEG works, it has python binding pyffmpeg that might work for you.