Objective:
This section explains how digital media is encoded, compressed, and stored in different file formats. After finishing this section, you should be able to:
• Describe how audio and video are stored digitally.
• Distinguish between raster and vector images.
• Select the best format for digital images.
• Describe how RGB values determine pixel color.
• Compare common image file types.
• Describe the most common digital audio and video file formats.
• Describe how 3D modeling is used for computer graphics.
• Describe the difference between lossless and lossy compression algorithms.
• Discuss how sampling rate and bit depth impact the quality of digital audio.
• Discuss how file compression and image resolution impact the quality of digital images.
Links:
- TestOut Courseware: https://labsimapp.testout.com/
Key Terms:
- Sample
- Bit Depth
- Sampling Rate
- Frame Rate
- Resolution
- Color Depth
- RGB Display
- Raster Images
- Vector Images
- File Compression
- Lossless Compression
- Lossy Compression
- Run-Length Encoding
- Compression Artifact
- Bitrate
- Video Codecs
- Wireframes
- Rendering
- Ray Tracing
Topics Discussed:
- How are pictures and sounds encoded as ones and zeros?
- Where have I seen raster images in my daily life? Where have I seen vector images?
- When is having a small file size more important than having pristine quality? When is quality important enough to justify large file sizes?
Assignment:
- Access the TestOut Courseware through the provided link.
- Study Section 2.4: Media Formatting, and complete the 10 question Exam to complete the Section.
Assigned: January 18th, 2024
Teacher Pacing Due Date: January 19th, 2024