unit 19 assignment 1 digital graphics

digital graphics 

Pixels

A pixel is a small square which build an image. The more pixels there are the higher the photo quality. when you zoom in the picture becomes blurry. in the picture above I cut out it the clown in Photoshop and zoomed in to show the pixels which look like little squares. 

vectors

Vector graphics are computer graphics images that are defined in terms of 2D points, which are connected by lines and curves to form polygons and other shapes. vectors can be seen everywhere like for app logos and magazines. vectors can be chosen to do logos as they can be seen digitally or on websites. vectors stay smooth when you zoom in where as pixels don't. vectors can be used for printing. 

Lossless compression is a class of data compression algorithms that allows the original data to be perfectly reconstructed from the compressed data. By contrast, lossy compression permits reconstruction only of an approximation of the original data, though usually with improved compression rates.

In information technology, lossy compression or irreversible compression is the class of data encoding methods that uses inexact approximations and partial data discarding to represent the content. These techniques are used to reduce data size for storing, handling, and transmitting content.

raster images 

In computer graphics, a raster graphics or bitmap image is a dot matrix data structure that represents a generally rectangular grid of pixels, view-able via a monitor, paper, or other display medium. Raster images are stored in image files with varying formats. raster images are mostly used for images intended for electronic use. 

bit depth

Bit depth refers to the colour information stored in an image. The higher the bit depth of an image, the more colours it can store. The simplest image, a 1 bit image, can only show two colours, black and white. That is because the 1 bit can only store one of two values, 0 (white) and 1 (black). An 8 bit image can store 256 possible colours, while a 24 bit image can display over 16 million colours. As the bit depth increases, the file size of the image also increases because more colour information has to be stored for each pixel in the image.
monochrome- a monochrome object or image reflects colours in shades. 

colour space

A colour space is a specific organisation of colours. In combination with physical device profiling, it allows for reproducible representations of colour, in both analogue and digital representations.
grey scale-In digital photography, computer-generated imagery, and complimentary, a grayscale or grey scale image is one in which the value of each pixel is a single sample representing only an amount of light, that is, it carries only intensity information. (black and white.)
RGB-an rgb colour model is any an additive colour based on the rgb colour model. the colour model is defined by three red green and blue additive primaries. 
YUV- yuv is a colour encoding system used as part of an image colour pipeline. 

resolution 

Image resolution is the detail an image holds. The term applies to raster digital images, film images, and other types of images. Higher resolution means more image detail. Image resolution can be measured in various ways. Resolution quantifies how close lines can be to each other and still be visibly resolved.

navigation

Navigation is there to help a website visitor use the website correctly. For example there might be a a drop down from a title which will take you to a different part of a website. Navigation's make the website more organised since parts are categorised. The navigation can vary from a drop down from two lines or hyperlinked titles that take you to different parts of the website. 

Stimulus

A stimulus states requirements for your creation. It could be given by a client or market research. the stimulus gives you a guide line to follow whilst you are creating. The stimulus can motivate you to create something as you have something to work from. 

Target destination

This is a way of specifying where you want your graphic to be placed on your website or network. This can only be done if your graphics are in a safe folder. by having all your graphics in one folder it makes it easier for the web server to find them all and therefore easier to optimise the graphics. 

Optimising

This is a method of raising the efficiency and performance of something. In the world of Media, graphics optimising can produce a balance in file size and quality of the graphic. Optimising puts the graphics to a suitable size to fit the screen. 

Dimensions

The dimensions of an image are the length and width of a digital image. You can control the dimensions to make an image bigger or smaller. Images have a set number of pixels that don't change so when you make the image larger or smaller. The pixels have to cover more space when you enlarge the image which is why the quality gets worse. 

Image output

The image output will help to decide if a graphic is capable of fitting on a web page. If it is not capable of fitting on the page it will take a while for it to processes and if it can fit you will get instructions or guidelines on how to create your own graphics.