Chapter 3 Problems

1. Resolution
   Open this grayscale photograph of Georges Sand in Pixel Jelly. Note the original resolution of the image and then resample the image (Edit -> Resample) so that the resolution is 150 in width. Resample again so that the image is returned to it's original resolution. Describe any visually signicant changes that you observe between the source image and the final resampled image along with providing a hypothesis as to the underlying cause.
2. Color Depth
   
   1. Recall that color is a three-dimensional entity and that the color depth measures the color-representing capacity of an image. Consider, however, that each of these three dimensions can have it's own depth independently of the other dimensions. Since memory is a resource that is consumed by increasing color depth, we might consider choosing the lowest cost color depth and resolution to represent a particular image. For this assignment, you should open this color image by Camille Pissarro in Pixel Jelly. Your task is to choose a color model and adjust the color depth in order to minimize the cost of digital storage while simultaneously maintaining a good quality image. The color model and color depth can be altered by using the color depth lab. You should submit a copy of your modified image along with 1) the resolution, 2) the color model, 3) the color depth and 4) the total number of bits required to store the raster data (this number indirectly represents the storage cost).
   2. Apply the settings obtained above (same color model and color depth), to this color landscape. After doing this, perform the same excercise as above: looking for the color model and color depth to adequately represent this image.
   3. Find a color model and color depths that minimize the cost while maintaining adequate quality when applied to both of the above images. Analyze your results and specifically address the question of whether you think it is possible to identify a single color model and color depth to adequately represent the majority of images.