CS 6620
Project 7

Chelsea Robertson

Required Images

The first required image contains one sample per pixel with no filtering.

In addition, I implemented the box filter for testing purposes.
This image shows the box filter of support 2 with nine jittered samples per pixel.

The second image contains nine jittered samples per pixel with a triangle filter of support 2.

The third required image contains nine jittered samples per pixel with a Gaussian filter of support 2.

I decided to try the sampling and filtering on the required image from homework 4 and my creative image from homework 6. Below are the results, using the same combinations of sampling and filtering as above.


The images above contain one sample per pixel and no filtering.

The images above contain nine jittered samples per pixel and a box filter with support 2.

The images above contain nine jittered samples per pixel and a triangle filter with support 2.

The images above contain nine samples per pixel using a Gaussian filter with support 2.

Code Listing

My source code for project 7 can be found here.

Creative Images

There are no creative images for this assignment.

Design Choices

Below are some of the design decisions I made for this assigment:

I decided to implement a Gaussian filter for my second filter.
I created the function images outside of my ray tracer because it seemed to be easier then implementing a way to render functions in my ray tracer.
I added an abstract Filter class. This class follows the interface given in the notes. There are three derived subclasses: BoxFilter, TriangleFilter, and GaussianFilter.
I also added an abstract Sample class. This class contains a constructor and one function called sampleAndFilter. This function samples and filters all the pixels in the image, and returns the image. There are two derived subclasses: UniformSample and JitteredSample.
I decided not to reuse samples from the previous pixel computations.

Extra Credit

I didn't implement the extra credit.