Understanding Common Image Formats and Digital Image Types

Understanding Common Image Formats and Digital Image Types

At the end of the lesson, you will...

Understand the differences between JPEG, PNG, GIF, and PDF image formats. Be able to distinguish between raster and vector images. Know which software can be used for editing raster and vector images. Comprehend the importance of choosing the correct image format for different uses.

What do you already know about image formats and digital image types?

The most common image formats

JPEG, PNG, GIF, and PDF

Differences between raster and vector images

Raster Images: Composed of a grid of dots known as pixels, with resolution defined by the number of pixels per unit. Vector Images: Made of mathematical lines and shapes that can be scaled without losing quality.

Software for editing raster images

Gimp and Inkscape: Free software used for editing raster images.

Software for editing vector images

Adobe Photoshop: Software used for creating, opening, and exporting vector image documents.

File formats and their characteristics for proper image management

JPEG: A compression format that reduces image file size for faster uploading. PNG: An image format that retains quality without data loss. GIF: A format supporting simple animations. PDF: A format that preserves image formatting and is readable on various devices.

Write down 3 things you learned in this lesson.

Have students enter three things they learned in this lesson. With this they can indicate their own learning efficiency of this lesson.

Write down 2 things you want to know more about.

Here, students enter two things they would like to know more about. This not only increases involvement, but also gives them more ownership.

Ask 1 question about something you haven't quite understood yet.

The students indicate here (in question form) with which part of the material they still have difficulty. For the teacher, this not only provides insight into the extent to which the students understand/master the material, but also a good starting point for the next lesson.