Image Editing (Cambridge (CIE) IGCSE ICT)

Image Editing

What is image editing?

• Image editing is the process of manipulating images and changing them to suit the user's end goal

• Image editing can be done in several ways, the exam requires you to know about:

  • Placing an image with precision

  • Resizing an image

  • Cropping an image

  • Rotating an image

  • Reflecting (flipping) an image

  • Adjusting brightness and contrast

  • Grouping and layering images

Placing an image with precision

• This refers to positioning an image accurately within a document or other media

• You can usually do this by selecting the image and dragging it to the desired location

• Some software allows for more precision through the use of coordinates or alignment tools

Resizing an image

• This means changing the dimensions of an image

• You can often do this by selecting the image and dragging its corners or edges

• Maintaining the aspect ratio means the image's width and height change at the same rate, preventing distortion

• Adjusting the aspect ratio can change the shape and proportions of the image

Cropping an image

• This involves cutting out and discarding parts of an image

• Cropping tools usually allow you to select a portion of the image to keep and discard the rest

Rotating an image

• This means turning the image around a central point

• Most software allows rotation to any angle, and common rotations such as 90 degrees or 180 degrees are often provided as options

Reflecting (flipping) an image

• This means creating a mirror image of the original

• An image can be flipped horizontally (left to right) or vertically (top to bottom)

Adjusting brightness and contrast

• These tools change the light and dark values in an image

• Brightness affects all pixels in the image equally, making the image lighter or darker

• Contrast adjusts the difference between light and dark values, which can make the image appear more or less detailed

Grouping and layering images

• These techniques help to organise multiple images

• Grouping combines images so they can be moved or transformed as a single unit

• Layering involves placing images on top of each other

• You can change the order of layered images, moving them to the front or back