ITEC2110, Digital Media Chapter 3 Digital Image Processing 1 GGC -- ITEC Digital Media

 Capturing Images  Digital Image Retouching  Color Adjustment  Selection Tools and Layer Basics  Output Images  Editing Vector Graphics Content 2

 the common selection tools for digital image editing  the layer basics for digital image editing In this lecture, you will learn: 3

 Crucial in image editing  Let you apply image effect (such as tonal or color changes) on the selected area  Let you move the selected area  The nonselected area is protected from the alteration Selection in Image Editing 4

 Predefined shapes  Lasso  By color ( (  By painting with a brush ( (  By drawing an outline around the area Categories of Selection Tools in terms of the way they are designed to work 5

Predefined Shapes 6 Marquee tools

Lasso 7 Lasso tools (

By Color: Magic Wand 8 Magic Wand

By Painting with a Brush 9 Edit in Quick Mask Mode

 Add (Union)  Subtract (Difference)  Intersect Combining Selections 10

 Select > Inverse Inverting Selection 11

 Stacking order of layers  Reordering layers  Opacity  Blending mode  Create new layer  Delete layer  Rename layer Layer Basics 12

 Layer style (e.g. drop shadow, bevel effects)  What is drop shadow  What is bevel effects ( (  Adjustment layers  Layer mask  Clipping mask Layer: Beyond Basics 13

Clipping Mask Example 14

How would you select the two rectangles together? (More than one way to do it) Review Question 15

Describe how you may create this image from the one shown in the previous slide. Review Question 16

Suppose you have the image from the one shown in the previous slide. Describe how you would easily modify it into this one: Review Question 17

How would you select the sky so you can replace it with a more interesting sky image? (More than one way to do it) Review Question 18

Review Question How would you extract the plant from this image, i.e., select everything except the black background? (More than one way to do it) 19