= Assignment 3 Camera Simulation = == Murad Akhter == == Date submitted: 11th May 2006 == == Code emailed: 11th May 2006 == == Compound Lens Simulator == === Description of implementation approach and comments === ...... === Final Images Rendered with 512 samples per pixel === || || '''My Implementation''' || '''Reference''' || || '''Telephoto''' ||attachment:hw3.telephoto_512.png|| http://graphics.stanford.edu/courses/cs348b-06/homework3/hw3.telephoto_512.png|| || '''Double Gausss''' ||attachment:hw3.dgauss_512.png||http://graphics.stanford.edu/courses/cs348b-06/homework3/hw3.dgauss_512.png|| || '''Wide Angle''' ||attachment:hw3.wide_512.png||http://graphics.stanford.edu/courses/cs348b-06/homework3/hw3.wide_512.png|| || '''Fisheye''' ||attachment:hw3.fisheye_512.png||http://graphics.stanford.edu/courses/cs348b-06/homework3/hw3.fisheye_512.png|| === Final Images Rendered with 4 samples per pixel === || || '''My Implementation''' || '''Reference''' || || '''Telephoto''' ||attachment:hw3.telephoto.png|| http://graphics.stanford.edu/courses/cs348b-06/homework3/hw3.telephoto_4.png|| || '''Double Gausss''' ||attachment:hw3.dgauss.png||http://graphics.stanford.edu/courses/cs348b-06/homework3/hw3.dgauss_4.png|| || '''Wide Angle''' ||attachment:hw3.wide.png||http://graphics.stanford.edu/courses/cs348b-06/homework3/hw3.wide_4.png|| || '''Fisheye''' ||attachment:hw3.fisheye.png||http://graphics.stanford.edu/courses/cs348b-06/homework3/hw3.fisheye_4.png|| == Experiment with Exposure == || '''Image with aperture full open''' || '''Image with half radius aperture''' || || attachment:hw3.dgauss_512.png || attachment:dgauss_dim.png || === 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 || http://graphics.stanford.edu/courses/cs348b-06/homework3/blank300x300.jpg|| http://graphics.stanford.edu/courses/cs348b-06/homework3/hw3.afdgauss_closeup.png|| || '''Double Gausss 2''' || __ mm ||http://graphics.stanford.edu/courses/cs348b-06/homework3/blank300x300.jpg||http://graphics.stanford.edu/courses/cs348b-06/homework3/hw3.afdgauss_bg.png|| || '''Telephoto''' || __ mm ||http://graphics.stanford.edu/courses/cs348b-06/homework3/blank300x300.jpg||http://graphics.stanford.edu/courses/cs348b-06/homework3/hw3.aftelephoto.png|| == Extras == === Stopping Down the Telephoto Lens === || '''Image with aperture full open''' || '''Image with quarter diameter aperture''' || '''Exposure increased by 4-stops in Photoshop''' || || attachment:hw3.telephoto_512.png || attachment:hw3.telephoto_lessBright.png || attachment:hw3.telephoto_brightAgain.png || I reduced the aperture to 1/4 th its original value to observe a 4-stop change in exposure. Increasing the exposure in Photoshop gave an image that seemed similar to the original. The reduced aperture size causes the images to be noisier since fewer rays end up making it to the scene from the camera. This is easy to see when comparing the Photoshop image with the original image on the leftmost column. ...... Go ahead and drop in any other cool images you created here .....