电子科妓女学光电科学与工程学院 SCHOOL OF OPTOELECTRONIC SCIENCE AND ENGINEERING OF UESTC 6,7 Color Fundamentals FIGURE 6.6 9 Typical color 5207 gamut of color 8 530 Color monitors 510 (triangle)and G Monitors color printing 550 devices (irregular 560 region). .6 570 500 5 580 590 .4 600 6 3 R -490 60 Printing 480 devices 470 0 1 .4 .8 x-axis
6.1 Color Fundamentals Color Monitors Printing devices
电子科妓女学光电科学与工程学院 SCHOOL OF OPTOELECTRONIC SCIENCE AND ENGINEERING OF UESTC Outline Color Fundamentals Color Models Pseudocolor Image Processing 楚 Basics of Full-Color Image Processing Color Transformations Smoothing and Sharpening ◆ Image Segmentation Based on Color 应 ◆ Noise in Color Images Color Image Compression
Outline ◆ Color Fundamentals ◆ Color Models ◆ Pseudocolor Image Processing ◆ Basics of Full-Color Image Processing ◆ Color Transformations ◆ Smoothing and Sharpening ◆ Image Segmentation Based on Color ◆ Noise in Color Images ◆ Color Image Compression 基 础 应 用
电子科妓女学光电科学与工程学院 SCHOOL OF OPTOELECTRONIC SCIENCE AND ENGINEERING OF UESTC 6,2 Color Models Agenda The RGB Color Model g The CMY and CMYK Color Models The HSI Color Model The YIQ Color Model* The YUV Color Model* g The YCbCr Color Model Agenda
The RGB Color Model The CMY and CMYK Color Models The HSI Color Model The YIQ Color Model* The YUV Color Model* The YCbCr Color Model* 6.2 Color Models Agenda
电子科妓女学光电科学与工程学院 SCHOOL OF OPTOELECTRONIC SCIENCE AND ENGINEERING OF UESTC 1.RGB Color Model B FIGURE 6.7 FIGURE 6.8 RGB Schematic of the 24-bit color cube. RGB color cube. Points along the Blue (0,0,1) Cyan main diagonal have gray values, from black at the Magenta White origin to white at point(1,1,1). Black 1,Gray scale (0,1,0) G Green (1,0.0) Red Yellow R RGB color models: R=8 bits Color depth 24 bits based on cartesian G=8 bits =16777216 colors coordinate system B=8 bits
1. RGB Color Model R = 8 bits G = 8 bits B = 8 bits Color depth 24 bits = 16777216 colors RGB color models: - based on cartesian coordinate system
电子科妓女学光电科学与工程学院 SCHOOL OF OPTOELECTRONIC SCIENCE AND ENGINEERING OF UESTC Example-RGB Color Model a b FIGURE 6.9 Red Red fixed at 127 (a)Generating the RGB image of the cross-sectional color plane (127,G,B): (b)The three RGB hidden surface Green Color planes in the color monitor cube of Fig.6.8. Blue Hidden faces of the DEMO cube of fig 6.8 (R=0) (G=0) (B=0)
Example - RGB Color Model Red fixed at 127 Hidden faces of the cube of fig 6.8 DEMO