Tinker256 shades, blocks of 1: 2514 bytes, 0% different.8 piles · 2514 B of 2304 B
Chapter 6 of 7
Throwing some away
The scanner picture barely shrank: its speckle has no repeats. But nobody needs every shade of every pixel.
This chapter: How does throwing detail away make a picture small, and what does it cost?
About this chapter
You will learn
- Drop detail people won’t miss
- Fewer shades and blocks make repeats
- Smaller files, bigger difference
Words you’ll meet
- Lossy
- Packing that throws some detail away for good: the file comes back close, not exact.
- Lossless
- Packing that brings every byte back exactly.
Step 1 of 5
Every way so far was : every byte came back. packing throws some detail away first.
Predict what fewer shades do to the size.