Images sizes and watermarking

Frequently asked questions, including solutions to common problems, common tasks, and tips for using eHive.
Zoe
Posts: 42
Joined: Thu May 08, 2008 11:29 am

Images sizes and watermarking

Postby Zoe » Wed May 21, 2008 2:11 pm

There has been a lot of interest in how images will be uploaded and viewed in eHive. Now is a great time to look into imaging, as there are still a few months to prepare before eHive goes live. We have put together some imaging information for you, along with a helpful website to visit for more general information...

What image size is needed for eHive?

eHive takes the images you upload and automatically creates four smaller versions, where the longest side of the image will fit these sizes:

75x75
150x150
400x400
800x800

These sizes correspond to our different views available for each record, displaying more or fewer details about the record with the image alongside.

The minimum image you upload should be at least 1000 pixels on the longest side. If your images are smaller than this and you cannot capture a new image, then images will not be as clear in the largest view in eHive. You should not upload images which are less than 400 pixels on the longest side.

Optionally, you can get eHive to store the original image. This uses much more disk space, but is useful for a few reasons:

a) You may be using eHive as your collections management system, in which case you may want access online to the original images for functions such as printing. The public do not have access to the original image.
b) You may use eHive as an archive of the images.
c) Having larger images already stored in eHive opens up the future possibility of eCommerce, that is, the public ordering of images online. This would of course be subject to whether you enable this for each specific image.


How does the print resolution affect eHive?

“dpi” or dots per inch is the density that an image will print at. The higher the dpi, the higher the quality of the printed output. The dpi setting does not have an effect on eHive – we are only concerned with the pixel resolution of the image for display on the webpage.

Does eHive have watermarking?

eHive does not have automatic watermarking, but you can apply your own watermark to images before they are uploaded to eHive. Watermarks should be discrete so that they do not detract from the public’s viewing experience. Watermarks can be applied in batch to a group of images. There are many watermarking software programs available for download from the Internet.

Further information

A great starting point is the Technical Advisory Service for Images (http://www.tasi.ac.uk), which provides information on digital imaging issues. They have topics covering how to start and manage digitisation projects, selecting collections to photograph and so on. They also provide all the technical information you will need including information on file formats, resolution and file sizes, cameras, hardware, software and so on. There is excellent information on how to create quality digital images for beginners through to competent photographers.

rpinchin
Posts: 2
Joined: Mon Jan 12, 2015 3:31 pm

Re: Images sizes and watermarking

Postby rpinchin » Wed Oct 21, 2015 11:05 am

Molong Museum is working on a free level Ehive account - which according to the pricing information should provide access for up to 200 images .
They have only uploaded under 30 images and seem to have run out of space?
Should they reload lower res files of the images and if so what size file do you recommend?
Given the information above it seems they should aim for the largest images possible but this does restrict what is possible on the free account?

Naomi
Posts: 29
Joined: Tue Oct 14, 2014 2:18 pm

Re: Images sizes and watermarking

Postby Naomi » Wed Oct 21, 2015 3:00 pm

The Molong Museum account is currently set to store original images on eHive. This means that the images that have been uploaded will be using the same amount of storage space on eHive as they would on a computer. (Entry level eHive accounts have 50MB of storage space available. The estimate of 200 images is assuming that original images are not being stored on the website).

When you upload an image to eHive, the system takes your original image and creates a set of copies, resized to fit specific dimensions (the largest of which is 800 x 800 pixels). These resized copies are used in the different views available for object records - Summary, Lightbox and Detail - as well as in other parts of the system, such as the Explore page. Once uploaded, your original images are not used in the public view of your profile or records. You can, however, access them when you are logged into your account.

You can specify whether you would like to store your original images on eHive in the Preferences and Data Access section of your profile.

Hope that helps,
Naomi

rpinchin
Posts: 2
Joined: Mon Jan 12, 2015 3:31 pm

Re: Images sizes and watermarking

Postby rpinchin » Fri Oct 23, 2015 5:04 pm

Thanks - yes that does seem to have fixed the problem
:D


Return to “Frequently Asked Questions”

Who is online

Users browsing this forum: No registered users and 1 guest