==============================   EXERCISE: reduce an image

// ---- DEMO
> Picture p = new Picture( "/Users/wallingf/Desktop/mountain.jpg" );
> p.show();
> p.exercise01();
> p.repaint();

> p = new Picture( "/Users/wallingf/Desktop/wallingf-250x328.jpg" );
> p.exercise01();
> p.show();

// ---- WHAT'S WRONG?
> p = new Picture( "/Users/wallingf/Desktop/wallingf-250x328.jpg" );
> p.exercise01wrong();
> p.show();

                                 =====   SLIDES: Kinds of _Selection_

** we learn that much of the background has a similar intensity to the shirt
   - accounts for why *distance* was insufficient when changing shirt color:
   - background average color is close to the shirt average; shirt distance!
** what could we do differently?


> p.explore();


> p = new Picture( "/Users/wallingf/Desktop/wallingf-250x328.jpg" );
> p.changePurpleToKellyGreen();
> p.show();


                                 =====   SLIDES: Kent Beck quote

** Your goal is to have many choices when designing a solution.
   Think about problems in many different ways...
   Don't settle for your first thought!


==============================   TASK: edge detection

* use explorer to walk boundaries on the mountain
> p = new Picture( "/Users/wallingf/Desktop/mountain.jpg" );
> p.explore();

                                 * aPixel.getAverage()

> p.detectEdges( 25 );
> p.show();

> p = new Picture( "/Users/wallingf/Desktop/wallingf-250x328.jpg" );
> p.detectEdges( 25 );
> p.repaint();
> p = new Picture( "/Users/wallingf/Desktop/wallingf-250x328.jpg" );
> p.detectEdges( 15 );
> p.repaint();

> p = new Picture( "/Users/wallingf/Desktop/sundial.png" );
> p.detectEdges( 25 );
> p.repaint();

> p = new Picture( "/Users/wallingf/Desktop/wheaties-box.jpg" );
> p.detectEdges( 15 );
> p.repaint();


==============================   SLIDES: Computer Vision, Step 1: Find Edges






==============================   TASK: highlight extremes, middle ground

> import java.awt.Color;
> p = new Picture( "/Users/wallingf/Desktop/sundial.png" );
> p.highlightExtremes( 50, Color.blue );
> p.show();


                                 =====   SLIDES: Kinds of _Condition_


==============================   HOMEWORK 2: demo the CODE; discuss

* what are the high-level operations?
* design: create empty methods, and design the operations one at a time


> Picture mainImage=new Picture("/Users/wallingf/Desktop/wallingf-500x656.jpg");
> mainImage.show();
> Picture imageToEmbed = new Picture( "/Users/wallingf/Desktop/insano.jpg" );
> imageToEmbed.show();
> imageToEmbed
Picture, filename /Users/wallingf/Desktop/insano.jpg height 231 width 239
> mainImage.embedImage( imageToEmbed, 5, 5, 220 );
> mainImage.repaint();


==============================   HOMEWORK 3: demo the RESULTS; discuss

> p = new Picture( "/Users/wallingf/Desktop/sundial.png" );
> p = p.lakeEffect();
> p.show();

> p = new Picture( "/Users/wallingf/Desktop/beach.jpg" );
> p.fogEffect( 150 );
> p.repaint();

> p = new Picture( "/Users/wallingf/Desktop/beach.jpg" );
> p.fogEffect( 100 );
> p.repaint();


* what are the high-level operations?
* design: create empty methods, and design the operations one at a time