Lossy Compression Algorithms

Digitisation and Lossy Compression

Electromagnetic Waves in Lossy Medium

Transmission Lines in the Frequency Domain and Lossy and Lossless Analysis

ChatGPT as a Blurry JPEG: Lossy Compression, Artifacts, and Understanding

Here is a simple explanation you can use: **Lossy Compression** Lossy compression reduces file size by permanently removing some data. This makes the file smaller, but some quality is lost. The goal is to make the file much smaller while keeping it looking or sounding “good enough” for people to use. **Examples of lossy file types:** * **JPEG / JPG** for images * **MP3** for audio * **MP4** for video **Example:** When you save a photo as a **JPEG**, some image detail is removed to make the file smaller. If you compress it too much, the picture may look blurry or blocky. --- **Lossless Compression** Lossless compression reduces file size without removing any original data. This means the file can be restored exactly as it was before compression. The quality stays the same. **Examples of lossless file types:** * **PNG** for images * **GIF** for simple graphics/animations * **FLAC** for audio * **ZIP** for compressed folders/files **Example:** When you save an image as a **PNG**, the file size may shrink, but no image quality is lost. It stays sharp and exact. --- **Simple comparison:** * **Lossy = smaller file, some quality lost** * **Lossless = quality kept, file usually larger than lossy** If you want, I can also turn this into a very short student-friendly classroom handout version.

Compression

AP CSP File Formats

AP CSP File Formats

A1.1.8 questions

Bits and Data Notes

Digital Image Compression and JPEG Images - lect 8

phf-nrwf-dgo (2020-09-25 at 03_41 GMT-7)

Data Storage and Compression

Notes on "ChatGPT Is a Blurry JPEG of the Web"

Data Compression and Encryption Notes

Compression

Bits and Data Representation

AP CSP Big Idea 2 (Data): From Bits to Meaning

quiz 4 data formats