CSC 161 Module on Image Processing with the Scribbler 2

Summary and Main Topics

This module introduces the customizable nature of self-written programs by using structs and 2-dimensional arrays, particularly emphasizing their uses with Myro Pictures.

1. Pictures
2. Structs
3. Pixels
4. Two Dimensional Arrays
5. Insertion Sort
6. Machine-level operations

Day-by-day Details

Day	Topic	Preparation	In-class	Due Date	Availability for Extra Credit
Tuesday, October 29	Module on Pictures		Examples square-move-1.c square-move-2.c square-move-3.c square-move-4.c square-move-5.c picture-splice.c 2D-array-alt.c
Wednesday, October 30	Structs: Transform a Pixel	reading square-move-1.c square-move-2.c square-move-3.c square-move-4.c square-move-5.c King, Sections 16.1-16.2 K&R 6.1 - 6.2, 6.7	lab exercise
Friday, November 1	Supplemental Problem 3		Supplemental Problem 3 (done individually)	Friday, November 1
Friday, November 1	Two Dimensional Arrays	King, Section 8.2 K&R 5.7, 6.3 - 6.4 2D-array-with-proc.c 2D-array.c array-move.c	lab exercise	Wednesday, November 6
Monday, November 4	Insertion Sort	Insertion Sort Reading	lab exercise
Tuesday, November 5	Bitwise operations and unions	King, Sections 16.4, 20.1 K&R 2.9, 6.8	lab exercise
Wednesday, November 6	Module Project		project	Wednesday, November 13

Project: Picture Suite

For this project, you will write the following series of functions which modify a picture. Each function should include tests and examples of pictures which it modifies.

• void pixelStrip (Picture * pic, char color)

  This function should set the R, G, or B value of every pixel in the picture to 0 (depending on what char color is).
  For example if parameter color is 'G', then this procedure should change the 'G' component of each pixel in the picture to 0; the 'R' and 'B' components would remain unchanged.

• void pictureRedder (Picture * pic)
  void pictureGreener (Picture * pic)
  void pictureBluer (Picture * pic)

  These functions should increase the intensity of their respective colors (red, green, or blue). This increase should never go past 255. The color should increase less when it is already high than when it is low.

• void circleSelect (Picture * pic, int xCenter, int yCenter, int radius)

  This function should select a circle from your picture and turn all of the pixels within that circle gray.

• a creative function of your choosing

  This function should do something interesting and creative to your picture. It should not just be a rehashing of a previous exercise or lab, and there should be a good amount of thought and effort placed into this function.

Grading

• General Grading Form
• Project-specific Grading Form