Pixel Resolution
Pixel resolution refers to the total number of pixels that make up an entire image, there are usually different requirements for both printed material and images used for screens. images on screen are usually 72 dpi which stands for dots per inch and when printing an image are normally 300 dpi.
Vector and Raster images
Vector
Vector images are not made up of a grid of pixels. instead of a grid of pixels vector graphics are comprised of paths which are defined by a start and end point along with other points curves and angles along the way. a path can be a line or a square, triangle or a curvy shape, these paths can be used to create simple drawings or even complex diagrams.
Raster
Almost all of the pictures on a computer are raster images, they are made of a grid of pixels unlike vector images, grids of pixels are commonly referred to as bitmaps, and because they are made of pixels this means the larger the image the more pixels which means when saved they will require more disk space. there are some file formats that are available that help reduce the file size of the image the most used ones are JPEG and GIF. the problem with using raster images is when you want to scale the image you can scale it down with no loss of quality but when you scale it up it will pixelate.
File Formats and uses
bmp - or bitmap is used for saving the colored pixels in a raster image without any compression.
png - PNG which can be pronounced ping, is a compressed raster graphic format, it is commonly used on the internet and is a common choice for application graphics.
gif - or Graphics interchange format, is a compressed file. gifs are normally used for smaller images as they lack the color range for higher quality images and are used fro small icons and animated images.
tiff - stands for tagged image file format, it handles color depths ranging from 1 bit to 24 bit, there are around 50 variations of this file format.
jpg - also pronounced as jpeg, this stands for joint photographic experts group, this is also the name of the committee who created it. the jpeg file format is a compressed file format without limitations on its color range like gifs are so this means if you see or save a large colorful image it is most likely a jpeg file.
psd - this file format is a Photoshop image file which is used in adobe Photoshop, a professional image editing program.
pdf - stands for portable document format, which is a multi-platform file format created by adobe systems. a file format that captures the documents text fonts and images.
eps - which stands for encapsulated postscript. eps is a postscript file format that is compatible with postscript printers and is often used for transferring file between other graphics applications.
ia - which stands for artificial intelligence. this is the ability of a computer to act human it has lots of applications including software and robotics but is mainly used in video games.
Compression
compression is used to reduce the file size of one or many files, when i file is compressed it takes up less disk space than uncompressed versions of that file and can be transferred to other systems quickly and with more ease. compression is mainly used to save disk space and to take the file less time to transfer to the internet.
image capture devices
image capture devices are anything that can capture images obvious things like cameras, but there are also video capture devices that capture video like video cameras and things like the elgato game capture device that captures gamplay right from your console through HDMI cables that are linked to the TV and console, these videos can then be edited and uploaded to the internet.
Optimizing
To rearrange things like data software images and to improve the efficiency or retrieval of processing, but when optimizing an image it is to reduce the file size by as much as possible without losing quality of the image.
Storage ans asset management
a digital asset management tool would be expected to provide generic functions like: organizing digital assets, manipulating digital assets which would include converting, merging and collating, searching for a digital asset, verifying the integrity of digital assets, delivery and distribution of digital assets, securing digital assets which includes copyright protection mechanisms and backing up digital assets.
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