Lossy Vs Lossless Compression

Lossy Vs Lossless compression

Lossless compression is a way of compressing images that doesn’t remove any of the original data. This method of compression takes up much more memory than lossy compression, however, the loss of detail and information in digital images or any other file type are much less i.e. the quality of the image or file will remain equally as high as before the file was compressed.  

Any file formats such as Raw, or CR2 (canon format for raw files) etc are all exmaples of files that benefit from lossless compression.

Lossy compression is a memory efficient way of storing images and other file types. This is because when lossy compression takes place data and information from the file being compressed is deleted so as to reduce it’s memory uptake. Usually, information will be deleted in a way that is noticeable to any future user of this file.

For example, file formats such as Jpegs, png and gif are all compressed with lossy compression.

When you are simply looking at a jpeg image it will be difficult to notice the difference between that and it’s counterpart raw image. However, when you come to edit the image the lack of information in the jpeg image will be noticeable.

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Image copyright laws on the web

How does intellectual property and copyright laws apply to images being used on the Internet

Which images do copyright laws apply to?

Copyright laws on the web apply to any digital images taken on any digital capturing device or any images taken on a traditional film camera that have been scanned into a digital form. Copyright also applies to any illustration or animations that are present on the Internet.

However, some of the copyright laws and guidelines do only apply to photographic images

How long does copyright last?

Copyright laws exist on any image until the creator dies, plus 70 years after the calendar year of their death.

Who owns the copyright?

Generally, the owner of the copyrights to an image is the creator or creators’ of an image. However, if the creation of an image was commissioned on behalf of an organization it is not uncommon for the organization in question to own the rights to the image, rather than the creator of an image.  Also, the creator of an image may pass on the selling rights of an image to an agency.

What if you cannot find the person or party who owns the copyrights to an image?

Work in where the owner of copyright isn’t known, the copyrights to the image don’t simply just disappear. These works in question are called orphan works; if orphan works are used or copied this is still an infringement of copyright. If an image doesn’t come attached with a © symbol, copyright laws still apply.

Is their anyway I can be completely safe when using an image from the Internet?

The only way to be completely safe when reproducing an image is to retrieve the copyright from the owner of an image. Or, to retrieve an image from a website which states clearly in the terms and conditions that the image may be used and copied freely.

What are the consequences of copyright infringement?

Often the theft of an image can result in being forced to pay the usage rights for an image when the theft has been discovered. However, it can result in being taken to court and having to pay for the usage rights, the legal fees of both you and the copyright holder, along with having to take the image down from your website as well.

However, deliberate infringement of copyright on a commercial scale is against the law and can result in a criminal prosecution.

Basic introduction to copyright law of images used on the world wide web, for more information visit: https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/305165/c-notice-201401.pdf