Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
This question does not appear to be about a specific programming problem, a software algorithm, or software tools primarily used by programmers. If you believe the question would be on-topic on another Stack Exchange site, you can leave a comment to explain where the question may be able to be answered.
Closed 1 year ago.
Improve this question
So I've spent the last 4 hours trying to find a way to convert this word document into a pdf that does not destroy the image quality:
https://easyupload.io/ilfsh7
Save as pdf:
Background color is lost and image quality is bad:
Print as pdf:
Page size is lost and image quality is a bit better but still bad and full of artifacts:
This post says that using pdfcreator is a good solution but it resulted in once again the loss of the page size information. The image quality was better but not good enough. I need it sharp enough for a label print.
Another thread showed how you can add options in the registry. Basically change the dpi during the conversion. As far as I can tell it did not change a thing. Image quality was still insufficient.
Do I have to buy Adobe Acrobat just to get a good image quality in my pdfs?
Adobe Online showcase their Word Plugin, so if you want to use similar offline for privacy then Just use their plugin to export from Word.
WordPad can be Command Line scripted to convert a docX to PDF but as you see will use the core content and can not respect customised formating such as the background.
WordPad can actually have a background colour but then again is not good with transparent images
However the point of this visual comment, is that scripting any other Word replacement such as LibreOffice should perform even better for personal usage.
So apparently Adobe is offering a free Online Conversion Tool which produces the best results so far. Although there are still some artifacts, the quality seems to be the best:
Edit: So adobe lets you convert 2 or so pdfs until it forces you to make a subscribtion. But I found an even better online converter that seems to produce pdfs with perfect quality:
pdf.online
Related
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
Questions asking us to recommend or find a tool, library or favorite off-site resource are off-topic for Stack Overflow as they tend to attract opinionated answers and spam. Instead, describe the problem and what has been done so far to solve it.
Closed 9 years ago.
Improve this question
I'm currently working on a project to automate the reading of a type of sensor (very similar to a pregnancy test stick, see figure below). The stick is dipped in a sample and either 1 or 2 lines appear.
The sensor is then photographed and it is this image that needs to be processed. My question is: what is the best way of going about this? From what I've read about the subject the MatLab image processing toolbox is very good, but that's a little beyond my budget. Are there any free/ cheapish alternatives that would be suitable?
The ImageJ toolbox might suit you. http://en.wikipedia.org/wiki/ImageJ
This would be possible using OpenCV using Java, Python or C/C++.
OpenCV (Open Source Computer Vision Library) is an open source
computer vision and machine learning software library. OpenCV was
built to provide a common infrastructure for computer vision
applications and to accelerate the use of machine perception in the
commercial products. Being a BSD-licensed product, OpenCV makes it
easy for businesses to utilize and modify the code.
A line detector is not that difficult to write code by yourself. Search for canny edge detector and hough transform for more details. And there are also some codes written by others that are shared in mathwork exchange pages, such as :
http://www.mathworks.com/matlabcentral/fileexchange/34637-line-detection-using-hough-transform/content/try3.m
http://www.mathworks.com/matlabcentral/fileexchange/35754-wide-line-detector
If you have the jpeg or other images rather than the raw data, imageJ is also a good choice for various image processing approaches: http://rsb.info.nih.gov/ij/download.html (though imageJ can also import binary data format file)
Closed. This question is off-topic. It is not currently accepting answers.
Want to improve this question? Update the question so it's on-topic for Stack Overflow.
Closed 9 years ago.
Improve this question
I was looking for a image compression tool for windows(Windows 7, more specifically), similar to ImageOptim (of mac). I've used few jpeg compressors tools in windows but they aren't giving the desired result. Yes, they compress the size but the quality of JPEGs are not good. some tools always print their water-marks on the image. this is not what I want.
The Tool should have these following features.
1. Free to use Licence.
2. Best Compression
3. Best quality
4. Multiple format compression, eg. JPG, GIF, PNG, etc.
5. Have windows context menu command to directly convert the image right from the explorer.
Waiting for your Replies. Thank You Guys.
There's FileOptimizer
http://nikkhokkho.sourceforge.net/static.php?page=FileOptimizer
According to this article it performed the best and the article also lists more options to explore:
http://www.netmagazine.com/features/best-image-compression-tools
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
This question does not appear to be about programming within the scope defined in the help center.
Closed 8 years ago.
Improve this question
Save for web feature in Photoshop for image size reduction, would this be the simplest way for a beginner (like myself) to try and save on (some) loading time.
I am using images for my menu buttons, background, header, post page, etc etc
I have only just found this save for web feature and I was wondering does it really help in image size or does it not make that much difference.
Is there any other option?
(website for reference: www.kizzieskorner.com)
PS: if you mark my question down please could you give an explanation why so I know what not to do next time - as I am new to these question forums too!
Any reductions in size will help of course. I would actually recommend looking at other image optimising tools.
If you are on a mac there is ImageOptim which is part of my regular workflow now. There is also an optimiser within CodeKit.
This site has a whole host of others listed too and might give you a bit more information on the subject.
http://devstand.com/apps/compress-images-apps/
Hope this helps
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
Questions asking us to recommend or find a tool, library or favorite off-site resource are off-topic for Stack Overflow as they tend to attract opinionated answers and spam. Instead, describe the problem and what has been done so far to solve it.
Closed 9 years ago.
Improve this question
Im trying to create a board game generator in ruby which takes images from one pdf and places them them on the tiles of the board-game template pdf. One image per tile.
I'm wondering what tools would be good for this in ruby. Ive looked at prawn and that seems great for creating the board game but i don't think i can use that for extracting images from the source pdfs.
Can anyone provide any ideas?
Extra info:
Currently my knowledge of how pdfs are created and formed is v.limited so this may not make sense or matter but just in case...
The source pdfs have one image per page. I haven't created the source pdfs / images so I cant determine how the pdf was authored i.e. is the image just plain text e.g. "Take a card" or is it some fancy adobe illustrator vector.
the images will always be re-sized smaller and image quality inst a priority - as long as it looks good to average user its fine.
take a look at this thread for some ideas on reading pdfs
Ruby: Reading PDF files
For writing PDFs, I recommend http://github.com/jdpace/PDFKit, it is a nice wrapper around wkhtmltopdf. It allows you to generate html with css and create a pdf directly from it. It saves hours of time compared to trying to format everything in prawn.
Closed. This question is off-topic. It is not currently accepting answers.
Want to improve this question? Update the question so it's on-topic for Stack Overflow.
Closed 9 years ago.
Improve this question
Does any one have an idea regarding what sort of algorithm might Google be using to find similar images ?
No, but they could be using SIFT.
I'm not sure this has much to do with image processing. When I ask for "similar images" of the Eiffel tower, I get a bunch of photos of Paris Hilton, and street maps from Paris. Curiously, all of these images have the word "Paris" in the file name.
Currently the Google Image Search provides these filtering options:
Image size
Face detection
Continuous-tone ("Photo") vs. Smooth shading ("Clipart") vs. bitonal("Line drawing")
Color histogram
These options can be seen in its Image Search Result page.
I don't know about faces, but see at least:
http://www.incm.cnrs-mrs.fr/LaurentPerrinet/Publications/Perrinet08spie
Compare two images the python/linux way
I have heard, that one should use this when comparing images
(I mean: make the prob model, calc. the probs, use this):
http://en.wikipedia.org/wiki/Kullback%E2%80%93Leibler_divergence
Or then it might even be one of those PCFG things that MIT people tend to use with robotics stuff. One I read used some sort of PCFG model made of basic shapes (that you can rotate magically) and searched the best match with
http://en.wikipedia.org/wiki/Inside-outside_algorithm