Metaimage 1 4 1 – Edit Images' Metadata

1. Metaimage 1 4 1 – Edit Images' Metadata Software
2. Metaimage 1 4 1 – Edit Images' Metadata File

Jul 09, 2018 What is image metadata. All digital cameras capture photos in the form of data, but they also record a lot of additional data about this data.This data about the pictures is called metadata. MetaImage lets you read, write, and edit images metadata. The application allows you to edit EXIF, IPTC, XMP, and Maker tags in a familiar interface. The program has been designed to improve your workflow. You have the ability to create and manage presets. Moreover, a special interface is provided for geographical and thumbnail data.

Metaimage 1 4 1 – Edit Images' Metadata Software

How to install django-metaimage

1. Download and install ActivePython
2. Open Command Prompt
3. Type pypm install django-metaimage

Metaimage 1 4 1 – Edit Images' Metadata File

django-metaimage is a GPL-licensed app for the Django web framework.Many sites deal with images/photos, which usually come from threesources: uploaded by a user, pulled from the Internet via a URL, orgenerated server-side. For the latter two cases, django-metaimageshould be helpful: a new instance can take either a remote image URL,or raw image data as a string (e.g. as might be produced viaMatplotlib).

The main MetaImage model provides a wrapper of useful functionalityaround ImageModel from the powerful django-photologue app (adependency). Some of the django-metaimage code was initially inspiredfrom Pinax's photo app, but I have removed Pinax dependencies, so thatdjango-metaimage only requires:

1. Django
2. django-photologue
3. django-autoslug
4. django-taggit
5. django-uni-form, trunk (optional)

You might need django-uni-form, if you want to use the includedexample templates, and want to see all django-metaimage's tests pass.

In sum, this app is provides more flexibility with localrepresentation of images on your site from multiple sources, whetheruploaded, from remote images, or sever-side generated images.

Usage

The main class, MetaImage, enables storing useful metadata aboutimages, including a title, caption, notes about the source(e.g. copyrights, permissions), and tags. MetaImage attributesinclude:

• title, slug, caption, source_note (for attribution text, copyrights, etc.)
• source_url (if any)
• privacy
• safetylevel
• tags

Now, to handle the two cases of storing images that the app was madefor: retrieval of a remote image from its URL (you'll have a localcopy in case the image moves/disappears), or storing a server-sidegenerated image:

• With a remote image, simply specify the source_url field in the newMetaImage instance and save it, e.g.

• With a server-side generated image - as a string object - one wouldsend in the keyword argument image_data when saving, e.g.

Useful MetaImage methods include:

• render() and render_linked(), which spits out the HTML to show yourimage on a webpage, with a hyperlink to a details-page.

Basic views, tests, and templates are also provided, so you canquickly integrate the app into an existing Django site.

Installation

Install via 'pip install django-metaimage' or from source. You mayalso need to do pip install for django-taggit, django-autoslug, andphotologue.

Then update your Django project's settings.py file: add 'photologue','taggit' and 'metaimage' (autoslug does not need to be there) in theINSTALLED_APPS list, e.g.

And then, do a 'manage.py syncdb' to create the database tablesneeded.

OPTIONAL: Templates are provided for adding, editing, viewing, etc. ofmetaimages; they're very basic and meant only as a starting point.But if you want to use them directly, do at least these two things:

1. Get and install django-uni-form > 0.7.0 which some of the templatesrely on, and also update your setting.py INSTALLED_APPS to list'uni_form' as a package dependency.
2. Update your site-wide urls.py, e.g.

Also, many of the django-metaimage templates have templatetagsdependencies that are commented out, as they require Pinax or otherpackages; you can activate them as needed, but be sure to update yourINSTALLED_APPS accordingly.

Testing

I've included a set of unit tests for the app; if you have integrateddjango-metaimage into an existing Django site/project, just do theusual 'manage.py test' and the tests should be run, BUT for all teststo pass, the current trunk (as of 2/2011) of django-uni-form isneeded:

Should you want to run django-metaimage's test suite outside of anyparticular Django site/project - i.e. stand-alone Django app testing -I suggest installing and using the django-app-test-runner and my forkof it at:

..which enables usage of a testing-specific settings file. After youinstall django-app-test-runner in your virtualenv (don't develop inPython without it!) you should be able to do something like:

Note that you'll need Internet connectivity for the tests to pass.

Errors, etc.

Please log errors/issues using django-metaimage's github site,http://github.com/limist/django-metaimage/issues

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