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(source: goldprice.org)
Does anyone know of a good ocr that is able to convert this image into text?
I tried tesseract but it didn't work out the way I expected.
You can try at first to find the text "Gold Price" or "GBP" (if this text is always the same)
And then you will know the place where that text is places, then just cut that part of image containing the text and proceed OCR to that line separately.
You can also try Cuneiform:
link text
Sounds like you need Engauge Digitizer (Open Source) - Digitizing software that converts an image file showing a graph or map, into numbers.
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I generated some barcode files using python-barcode as png image files.
and I would like to know the best way to actually print those image files on actual paper using the system printer.
Bulk processing is the way for me.
Any hint would be much appreciated.
maybe it works pywin32 , sample document link
http://timgolden.me.uk/python/win32_how_do_i/print.html
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I'm looking for a tool where I can reliable convert a pdf to an excel spreadsheet from the commandline (as I would like to use a script to automate this).
I need something that will properly convert the pdf, as you would using Acrobat Pro or similar programs.
pdftotext This command will help you to convert pdf to text. Excel has the capability to import text data. If you prefer to convert text data to csv please refer the answer given here
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I want to convert MP3 file which is less than 10 MB to a Base64 encoded string. I can only find image converters.
Can anybody suggest me an online tool which will do this?
Look for "binary to base64" or "file to base64". For example, this tool.
Then precede raw base64 result with data:audio/mpeg;base64,
Use Notepad++, first select the entire file (CTRL+A)) and then use the Base64 Encode option under the plugins menu:
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I have a large amount of document in different format, e.g. doc, xls, ppt, docx, odf, etc. I am looking for a Linux library, which allow me to convert different kinds of document to PDF with a command.
Is this library exist? Do you have any suggestion?
Thanks everyone. :)
A good place to start would probably be the source code of LibreOffice.
It's not a "library" as such, but you can use OpenOffice conversions from the command line: http://www.oooforum.org/forum/viewtopic.phtml?t=7242
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Do any open source libraries exist for programatically selecting and rating the compatibility of sets of colors using color theory?
It would be very useful to be able to select color palettes based on simple color harmony rules like complimentary, analogous, triadic, and tetradic colors.
I just found this: Harmonies theory and math.
Also of interest is the rest of the EasyRGB site, which will explain how to do RGB to HSV, etc.
While it's not source code, it's the formulas for calculating the values.
Also interesting: "Color Jack"
This isn't a direct answer and it's not open source, but you might take a look at what they are doing at Adobe's Kuler web site. They have API Documentation that might be worth a read.