3D Reconstruction

Laura Dong
CSE455 Computer Vision
Project 3 Artifact

Discussion

Reconstruction generally worked well for the given source images. Normal and depth calculations were able to capture the overall geometry of the objects as well as finer details. Albedos were quite accurate at distinguishing colors from the surface. The results for the rock image set seemed to turn out particularly well, given the rough and irregular surface.

Some problems with reconstruction are most apparent in the owl image set. The limited viewing angle results in distorting the owl's face at the edges of the reconstructed figure. There seemed to be a small amount of specular highlights that created artifacts in the normals as well as the albedos, seen in the ridges of the eye and pupil and the torso. Perhaps smoothing images before calculating normals would help reduce this effect for slightly specular materials.

Buddha Image Set

Normals

Albedos

Depths


Owl Image Set

Normals

Albedos

Depths


Rock Image Set

Normals

Albedos

Depths


Totem Pole Image Set

An attempt at taking my own source images of this wooden totem pole figurine thing.

The reconstruction results are fairly decent, considering my lack of understanding about using cameras in general and not really having the right resources for taking photos in controlled lighting conditions. The source images were all taken with the same aperture and shutter speeds. I used a sphere-like object for calibrating lighting directions.

However, using the source images as captured resulted in a uniform set of normals and great disappointment. To remedy this, I batch-adjusted the color brightness/contrast and saturation on images of the figurine, which produced the following results.

Source images

Normals

Albedos

Depths