Computer graphices presentation
- 1. COLOR MODEL
- 2. Color Color Model RGB Representation CMY Representation Properties of RGB Model Properties of CMY Model Applications RGB Vs CMY HSV Comparison CONTENTS……
- 3. WHAT IS COLOR? Color is a sensation produced by the human eye and nervous system.
- 4. COLOR MODELS Color model is an orderly system for creating a whole ranges of color from a small set of primary color. A color model is also a way to turn colors into numbers with a mathematical formula.
- 5. CONTINUE…….
- 6. TYPES OF COLOR MODEL
- 7. ADDITIVE COLOR MODEL…….. Additive color is color created by mixing a number of different light colors, with shades of red, green, and blue. Example of additive color model is RGB Model RGB model contains primary colors. primary colors are: Red Green Blue
- 8. SUBTRACTIVE COLOR MODEL…….. A subtractive color model explains the mixing of a limited set of paint pigments to create a wider range of colors. Example of subtractive color model is CMY Model. CMY model contain secondary color. Secondary colors are: Red + Blue =Magenta Green +Blue = Cyan Red + Green = Yellow
- 10. PROPERTIES OF RGB COLOR SYSTEM…… * Additive color model. * For computer displays. * Uses light to display color. * Colors result from transmitted light. * Red + Green + Blue = White.
- 11. RGB REPRESENTATION…… We can imagine the RGB as a 3-dimensions . RGB is our Goal from Now to the end. Actually RGB is three layers behind each other but just for imagining .
- 12. RGB COLOR MODEL…….. The RGB Color Model If R,G, and B are represented with 8 bits (24-bit RGB image), the total number of colors is (28 )3=16,777,216
- 13. NUMERIC REPRESENTATIONS Notation RGB triplet Arithmetic (1.0, 0.0, 0.0) Percentage (100%, 0%, 0%) Integer number (255, 0, 0)
- 16. IMPORTANCE OF RGB COLOR MODEL…… The color model RGB is used in hardware applications like PC monitors, cameras and scanners, It is used for Web graphics, but it cannot be used for print production. It directly reflects the physical properties of "True- color" displays
- 17. APPLICATIONS OF RGB COLOR MODEL…… It is used— For sensory representation Display of text images in electronic system, For example-Computer, T.V., Camera
- 18. CMY(K) MODEL……..
- 19. PROPERTIES OF CMY(K) COLOR MODEL……. * Subtractive color model. * For printed material. * Uses ink to display color. * Colors result from reflected light. * Cyan + Magenta + Yellow = Black.
- 20. CMY(K) MODEL……. •Unit Cube defined on C, M & Y axes. •A printed color that looks red absorbs the other two components G and B and reflects R. •Thus the C-M-Y coordinates are just the complements of the R-G-B coordinates.
- 21. CONTINUE……. In additive color models such as RGB, white is the “additive” combination of all primary colored lights, while black is the absence of light. In the CMYK model, it is the opposite: white is the natural color of the paper or other background, while black results from a full combination of colored inks. RGB To CMY CMY To RGB
- 24. IMPORTANCE OF CMY COLOR MODEL……. the CMY color model is used in color printers. It is created by the subtractive mode Used in most commercial color printing (books, magazines, etc.)
- 25. APPLICATIONS OF CMY COLOR MODEL……. Used for hardcopy devices Used to describe the printing process Used in color printing
- 26. RGB VS. CMY MODEL……. RGB is based on projecting but CMY is based on ink. RGB is used for projecting light but CMY is used for reflecting light RGB offers a much wider range of colors than CMY RGB scheme can produce colors that are more vivid and vibrant.
- 27. HSV MODEL……..
- 28. CONTINUE……..
- 29. CONTINUE……..
- 32. Any Question ???
- 33. Thank You