Assignment 3 Camera Simulation

Doug Johnston

Date submitted: ?? May 2006

Code emailed: ?? May 2006

Compound Lens Simulator

Description of implementation approach and comments

I made an effort to take this one step at a time, so I wouldn't run into big problems with no idea what to fix.

My first step was to setup the rendering system, and make sure I get thr raster->camera and camera->world coordinate transformations correct. I tested this by setting the direction vector normal to the film plane (ie: (0,0,1) in camera coords.), and let everything run, which should produce a very small orthonormal projection. This is what I got:


which looks like it should. Its the very middle of the image, flipped upside down like a good film plane should be.

Next, I got the lens files reading in properly, and verified the output. I wrote a Ray-Sphere intersection routine, and tested it using only the back lens, with orthonormal rays, which produced the following output of interesections: [[br]]

[[br]]

which looks pretty spherical lens-like. Next, I aimed the rays at the lensUV point after converting to a disk with concentricSampleDisk, and got what I expected:

Final Images Rendered with 512 samples per pixel

My Implementation

Reference

Telephoto

hw3telephoto_512

Double Gausss

hw3dgauss_512

Wide Angle

hw3wide_512

Fisheye

hw3fisheye_512

Final Images Rendered with 4 samples per pixel

My Implementation

Reference

Telephoto

blank300x300

hw3telephoto_4

Double Gausss

blank300x300

hw3dgauss_4

Wide Angle

blank300x300

hw3wide_4

Fisheye

blank300x300

hw3fisheye_4

Experiment with Exposure

Image with aperture full open

Image with half radius aperture

blank300x300

blank300x300

Observation and Explanation

......

Autofocus Simulation

Description of implementation approach and comments

......

Final Images Rendered with 512 samples per pixel

Adjusted film distance

My Implementation

Reference

Double Gausss 1

mm

blank300x300

hw3afdgauss_closeup

Double Gausss 2

mm

blank300x300

hw3afdgauss_bg

Telephoto

mm

blank300x300

hw3aftelephoto

Any Extras

...... Go ahead and drop in any other cool images you created here .....

DougJohnston/assign3 (last edited 2006-05-17 11:20:08 by DougJohnston)