Image coding

Содержание и основные понятия

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Alterna chapter 20
Image coding
RGB, CMYK, HSV, colour coverage; raster, vector, 3D; cameras and technical vision.
Chapter 20 gives in-depth consideration
encoding static images
: Color models (RGB, CMYK, HSV, LAB), raster and vector graphics, 3D, digital camera principles.
in Chapter 9.4
.
GEF - 7-9 grade
PIF · Baseline
OGE No. 6.7
EEG No. 7
20
Chapter Pages
Five pages with theory, interactors and a bank of assignments.
20.1
RGB Color and Color Models
Additive/subtractive mixing, colour depth, Locus
20.2
Rastr and vector + 3D
Formats, permits, scaling, 3D graphs
20.3
Cameras and technical vision
CMOS/CCD sensors, HDR, industrial cameras
20.4
Workshop
OGE/EGE trainer, tasks, reviews
20.5
Polygon examination
Quest, test, open task
🔗
Links with other chapters
Chapter 20 is based on knowledge from the previous few sections, understanding these linkages helps to meet the tasks of the EEG and the EGE.
Chapter 9.4 - Discretion
Size formula:
I = X x Y x i (bit)
This formula is used to calculate the size of the image file by resolution and depth of colour. This is the formula used by OGE No. 6.
Chapter 11 - Bilingual coding
Two steps:
2
8
=256, 2
24
= 16.7 million
The depth of colour i determines the number of colors N=2
i
EGE No. 7 often checks the understanding of this relationship.
Chapter 21 — Sound and video
Similar principles:
Temporary discreteisation, spatial resolution
Video = image sequence (24–60 fps). Understanding raster graphics helps encode video.