Task 7 (End)

Advantages and Disadvantages of Lossy and Lossless file compression

Lossless

Lossless file compression reduce the file size while keeping the quality and colour, and decompressing it retrieves the original date. The data in the file is only thrown away until you decompress the file again so you are able to transfer the file. A file used for this one is .zip, and this file type is quite common to use to compress it with lossless compression. The problem with this is that it doesn’t compress the file (make it as small as) lossy compression would make a file.

Lossy

Lossy file compression reduces the file size while not keeping the full quality and colour of it. The other main issue is that it permenantly throws away the pixel information that it compresses. The original data is not retrieved when it is decompressed, it’s lost forever (hence the lossy). Though this is still relevant, and the data that is forever gone does not always look like it’s not there. Lossy compression is good at finding information that we don’t see or can’t see in a sense and removing it to compress the file.

MetaData and Meta File and how it’s used in computer graphics

MetaData is a file that defines a group of other files and and gives us a summary of the information that they contain. Though, there is another metafile that is used normally in computer graphics, and they define objects, and images while using a specific list of coordingates.

This other type are used for vector images like in Adobe Illustrator, CorelDRAW and any EPS files, though they can contain raster images as well.

Common file naming conventions

People tend to name files with v1 or v2 if it’s the second one and so on and so forth with the rest of the versions. But use an _ underscore to add a space between it. Though with more than 9 files use 01, 02, 03 etc. We also need relevant nformation in the file name, that provides a brief description and context of what is in that file. Here is a simple file naming convention I have found while looking YYMMDD_Project_Country_Event_Number.xxx.

The thing with my file names, is that I normally prefer to have many folders to organise the files even further with labeling the assesment, then task number and things like that. I prefer to save things quickly and as soon as possible, and sometimes do not have the time to put so much information into the title of the file name.

The importance of file management and location

You must have files kept in the right place as you can easily loose a file if you have multiple files and folders like I do on my usb, and if you were to name it incorrectly then it would be even more difficult. You could even end up accidentally deleting the file when clearing out your usb as well.