Feature #1426
closed
API: Display image smaller size
Added by Bernhard Koschiček-Krombholz about 5 years ago.
Updated over 4 years ago.
Description
Some images can be very large in file size. Since the API should also provide data for different front-ends, it can be useful, that API clients can forcefully downsize images. One idea is, that the normal display path will show the full image. With parameters the client can demand a 30% size version of the image. Or the image pixel size will be downsized to a number like 1200px. The path will be /api/display/image.jpg?size=30 or /api/display/hsize=1200 or /api/display/vsize=1200 (horizontal and vertical size)
If python can not do it by itself, maybe the Pillow package can do this.
My take on this is that we will need some image processing in OpenAtlas sooner or later anyway. I linked a related issue about previews and although nobody wrote a ticket so far some people mentioned they would like a slideshow and similar. Once we have solved this for OpenAtlas (thumbnails, previews, slideshows, ...) we could decide if this is sufficient for the API too or if we would need extra functionality there.
What would be needed now is a volunteer who delves into this topic and drafts a solution proposal which we can than discuss together ;)
I started a draft and everybody is welcomed to join/take over: Image processing
I tried to play around with Pillow, but sadly couldn't make it work on my machine.
If now more and more projects asks for IIIF standard, maybe it is better to got straight to IIIF implementation?
- Start date changed from 2020-12-01 to 2021-04-02
- Follows Feature #1492: Image Processing added
- Status changed from Acknowledged to In Progress
Feature is done, testing and mypy in progress
- Related to Question #1517: decide on/implement content negotiation for image API added
- Status changed from In Progress to Resolved
It is possible to get different sizes of images through an API request at the endpoint http://127.0.0.1:5000/api/display/ and the parameter image_size. Possible arguments are: 'thumbnail' (200px), 'table' (100px).
- Status changed from Resolved to Closed
- Target version changed from 208 to 6.4.0
- Subject changed from API: display image smaller size to API: Display image smaller size
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