Working with Images

Bitmap Which image looks sharper? Image A Image B Let’s zoom in…

Vector Lets make the phone larger Lets make the phone larger and again… and again… Does it lose its sharpness?

Why use bitmap? You can easily change the colour of each pixel! Before Paint.net software used to manipulate image After…

Key points Bitmap Made up of pixels; each pixel = 1 colour. Image made up of many pixels. Resizing reduces quality. Bitmap Made up of pixels; each pixel = 1 colour. Image made up of many pixels. Resizing reduces quality. Vector Easily resized without loss of quality. Uses points, lines and curves – combined to make an image (there are some mathematical formulae involved). Vector Easily resized without loss of quality. Uses points, lines and curves – combined to make an image (there are some mathematical formulae involved). Examples include… Bitmap Photographs, icons on the computer, scanned images. Bitmap Photographs, icons on the computer, scanned images. Vector Logos, posters, artwork. Vector Logos, posters, artwork.

In this lesson students are learning about: using graphic software to create and edit images giving constructive feedback

At the end of this lesson students will be able to: select appropriate graphic tools use a variety of graphic tools to create and edit images

Using graphics software – skill building - 15 mins Your teacher will demonstrate the following… Adding a colour filter Cropping Combining and layering Hue, saturation, opacity, contrast

Using graphics software – skill building 30 mins Task: work through Graphic Skills Exercises.pdf, using the images supplied in the folder called Image Bank. You should save ‘before’ and ‘after’ versions of each image.