| Ear Structure |
Ear Structure
I used VolSuite 3.3 from the Caldwell labs to do this assignment. I had originally chose Simian, but I was having some problems using this dataset with Simian. When I added a Tranfer function widget, the data would blank out and the gradient plot would disappear. I could not determine why.Below we show an image obtained from VolSuite:
This image shows many of the structures we were asked to identify quite clearly. On the right the cochlea is visible and on the left there is the hammer and anvil. However, there is also the stirrup, but it's very tough to make out in this shot.
I've sliced this image with three planes actually. In the next image you can see a portion of each of them on the right side:
My basic goal was two use two planes to get a fatten slice of the data in the y-axis, and then I use to the third plane from below to crop off more of the data.
This data was colored using normal data. I calculated the gradients of the data by using central differences to approximate them. Then I combined the data. The coloring is actually the diffuse and ambient light, but I've adjusted the opacity of the data as well, as show here:
In attempt to better view the stirrup, I rotated the data around so that there was nothing "behind" it, and I added a green-blue coloration to the data:
Here the stirrup is a bit more visible as a v-shaped structure in the center-top of this image. I used the following coloring with the color strip mode:
Overall, I found VolSuite's interface easy to use, but I would have liked the ability to color just a portion of the gradients one color, as in Simian. However, Simian's nonintuitive interface and buggy renderer really inhibited its use for me. VolSuite allowed me to easily manage both the data, calculate its normals for lighting, plus it made clipping intuitive.