How do we create and change digital images? | Year 3 Computing PDF Download

Understanding Digital Images

• A digital image is essentially a picture that is stored in a digital format on a computer.
• By being digitized, information and data in the image are converted into a digital code that computers can interpret.
• There are multiple ways to create digital images:
  • Using Graphics Software: Programs like Adobe Photoshop or GIMP allow users to create images from scratch.
  • Importing via Camera or Scanner: Images can be imported from digital cameras or scanners for editing.
  • Combining Methods: Users can also combine both approaches, like adding text to a photo.

Editing Digital Images

You can modify an image to alter its appearance in various ways:

• Cropping: If an image is too large or if there are parts you want to exclude, you can crop it. This involves removing sections of the image to focus attention on other parts.
• Rotating: Rotating an image is useful if the digital image is upside down or needs adjustment to its orientation.
• Flipping: Flipping an image reverses it horizontally or vertically. This is handy if you want objects or people to face a different direction in your digital image.

What effects can you add to images?

When it comes to editing images, various effects can be applied to alter their appearance dramatically.
Let's explore some key effects:

• Original Image: Here's the unaltered image for reference.
• Black and White Filter: Applying a black and white filter converts colours into varying shades of grey, offering a classic and timeless aesthetic.
• Sepia Filter: Utilizing a sepia filter imparts a warm brown tint to digital images, evoking a nostalgic and vintage feel.
• High Contrast: Adjusting the contrast levels can make an image appear more vibrant or subdued, significantly impacting its visual appeal.
• Decreased Brightness: Altering the brightness settings can either lighten or darken an image, influencing its overall mood and tone.

Understanding Image Retouching

• Definition of Retouching: Retouching involves altering specific parts of an image to enhance its overall appearance.
• Utilization of the Clone Tool: The clone tool is a key instrument in retouching that allows users to duplicate a section of an image onto another area.
• Enhancing Appearance:
  • By using the clone tool, users can eliminate undesired elements from an image, thereby refining its visual quality.
  • Example: If an image of a red apple has a blemish on its skin, the clone tool can be employed to duplicate a flawless section of the apple's skin and cover the imperfection.
• Adding Elements:
  • The clone tool can also be used to incorporate new components into an image, enhancing its composition.
  • Example: In a landscape image, the clone tool can introduce additional trees, enriching the scenery.