High Depth of Field Images

In this assignment, you will combine multiple pictures to create a high depth of
field image 

Then you will create special effects 
(i) Change depth of field
(ii) Change orientation of slab of focus

Useful links
http://grail.cs.washington.edu/projects/photomontage/
http://www.sgi.com/misc/grafica/depth/index.html
http://www.cambridgeincolour.com/tutorials/depth-of-field.htm


--------------------------------------------

1. Here is the high level code for HDF creation

Read in images 1 to n
For each pixel
	Find local variance in n images
	Keep pixel with largest variance

This should generate image where all pixels are in focus
Create labeling for which pixel came from which image
The lable values correspond to the image index
Run a median filter to eliminate spurious lable values
This labeling creates approximate (psuedo) depth map for the image
  where 1 indicates object parts closest to the camera and
	n indicates parts farthest from the camera

2. Special effects
2a. Changing depth of field
Now you want to create an image where depth of field is
larger than in the input images. 
However, for parts outside the depth of field the image
should be blurred
Use the psuedo-depth map created above and choose samples accordingly


2b. Changing orientation for plane of focus
For each shaft (group of columns) left to right choose
shaft from successive image 1 to n.
This will create an image where plane of focus shifts from left to right
Experiment to create other focus slab orientations.

---------------------------Assignment Description---------------

Dataset1
Download from bug.zip from http://grail.cs.washington.edu/projects/photomontage/

Dataset2
Take atleast 5 pictures of a scene with varying focus
Keep objects at varying distance
Search on web for 'depth of field' tutorials for samples
Use remotecapture on Powershot
Do not change aperture or exposure settings

	-------------------------------------------------
Create HDF image
	Average the n images in Matlab to get an idea of what you should get
	Write Matlab code to create your own HDF image
	Implement special effects
Submit
	Due Oct 19th
	All code
	For dataset1: Average, label map, special effects results
	For dataset2: input images and three results
	Send me a link to your assignment
	

---------------------------End Assignment Description---------------