Saturday, September 22, 2012

3D Segmentation Algorithms

This paper is about segmentation and compares seven algorithms (K-means, random walks, fitting primitives, Normalized Cuts, Randomized Cuts, Core Extraction and Shape Diameter Function) with human segmentation. Some important metrics are also presented to evaluate these algorithms.

A Benchmark for 3D Mesh Segmentation
Xiaobai Chen, Aleksey Golovinskiy, Thomas Funkhouser
ACM Transactions on Graphics (Proc. SIGGRAPH), August 2009.

What follows is learning how to use LDraw library and initiate the retrieval process, using some LEGO bricks. Although the algorithms presented doesn't consider color information, I'm going to use it in my work.

Tuesday, September 11, 2012

Features & Segmentation

I am reading some articles about segmentation (how to combine both color and depth information) and feature extraction (knowing more about SIFT, SURF, NARF, etc). Although the last reference is out of scope, it gives some ideas about the use of Microsoft Kinect, Features and how to do feature matching.

Color image segmentation in RGB using vector angle and absolute difference measures

Sanmati S. Kamath and Joel R. Jackson
[14th European Signal Processing Conference (EUSIPCO 2006)]

Sparse Distance Learning for Object Recognition Combining RGB and Depth Information
Kevin Lai, Liefeng Bo, Xiaofeng Ren, and Dieter Fox

Building a 3D map from RGB-D sensors
Virgile Hogman


Wednesday, September 5, 2012

More Research

I have read some articles about descriptors and how to use depth and color segmentation together, which are going to be an important phase of my work.


Shape Distributions on Voxel Surfaces for 3D Object Classification From Depth Images 
Walter Wohlkinger, Markus Vincze 
Vision4Robotics Group, Automation and Control Institute, Vienna University of Technology, Austria
[2011 IEEE International Conference on Signal and Image Processing Applications (ICSIPA2011)]

3DNet: Large-Scale Object Class Recognition from CAD Models 
Walter Wohlkinger and Aitor Aldoma and Radu B. Rusu and Markus Vincze
[2012 IEEE International Conference on Robotics and Automation]

Object Detection using the Kinect
Jason Owens,Vehicle Technology Directorate, ARL

Due to configuration process, I still have problems in using PCL. Probably I will spend more time on achieving this next week.