Class 38 — Monday November 25

Image manipulation

I need a haiku — I can't think of one I like — Will you please help me

---

Importance of following directions

---

Look both ways

• Back or ahead

---

Tasks

• Redownload manip.py

• Add two functions each to your modules dimensions.py and locate.py

• Define a function blur() in module effect.py

• To test your functions use progam photo_ops.py

---

Module dimensions.py

• Functions to be added

• shrink( original )

• Returns the dimensions of an image whose width and height are one half that of image original

• enlarge( original )

• Returns the dimensions of an image whose width and height are twice that of image original

---

Module locate.py

• Functions to be added

• shrink( spot, w, h )

• Returns a new correspondent location ( a, b ) for spot, where the dimensions in the correspondent image are twice that of w and h

• enlarge( spot, w, h )

• Returns a new correspondent location ( a, b ) for spot, where the dimensions in the correspondent image are half that of w and h

---

Module effect.py

• Function to be added

• blur( original )

• Returns a new image that is a 16 by 16 scaling of a 1/16 by 1/16 scaling of original

• You should find module manip.py functions zoom_in() and zoom_out() helpful.

---

 

---

 

 

 
   
   
   
 

© 2019 Jim Cohoon

Resources from previous semesters are available.