1. Bitmap Image Editing B.Sc. (Hons) Multimedia ComputingMedia Technologies

2. Agenda Bitmapped Graphics Transformations Effects Anti-Aliasing B.Sc. (Hons) Multimedia ComputingMedia Technologies

3. Bitmapped Graphics Allow for high-definition photorealistic images. Image encoded on a pixel by pixel basis. Image resolution degraded when scaled Supports lossless compressions algorithms File Formats -.BMP,.GIF,.JPG,.TIF.TGA Software Adobe Photoshop ( with ImageReady) Macromedia Fireworks PaintShop Pro (Shareware) B.Sc. (Hons) Multimedia ComputingMedia Technologies

4. Bitmap Structure B.Sc. (Hons) Multimedia ComputingMedia Technologies Logical PixelsDevice Pixels

5. Bitmap ‘Mapped’ to Device

6. Bitmap ‘Mapped’ to Device 2

7. True Colour Human eye can distinguish between 2 24 colours = 16 777 216 colours Thus any system giving >= 2 24 colours can be described as ‘Truecolour’ or Truecolor 24 bits per pixel yields true colour 16 bits per pixel often referred to as ‘High Colour’ B.Sc. (Hons) Multimedia ComputingMedia Technologies

8. Image Transformations Scaling Rotations Translations Reflections (flip) Skewing Freeform B.Sc. (Hons) Multimedia ComputingMedia Technologies

9. Translation B.Sc. (Hons) Multimedia ComputingMedia Technologies

10. Scaling B.Sc. (Hons) Multimedia ComputingMedia Technologies

11. Rotation B.Sc. (Hons) Multimedia ComputingMedia Technologies

12. Reflection (flip) B.Sc. (Hons) Multimedia ComputingMedia Technologies

13. Skewing B.Sc. (Hons) Multimedia ComputingMedia Technologies

14. Freeform (distort) B.Sc. (Hons) Multimedia ComputingMedia Technologies

15. Compositing Images B.Sc. (Hons) Multimedia ComputingMedia Technologies

16. Compositing Images B.Sc. (Hons) Multimedia ComputingMedia Technologies

17. Compositing Images B.Sc. (Hons) Multimedia ComputingMedia Technologies