Junzhou Chen

Learn More
In this work, we solve the pose estimation problem for robot motion by placing multiple cameras on the robot. In particular , we use four cameras arranged as two back-to-back stereo pairs combined with the Extended Kalman Filter (EKF). The reason for using multiple cameras is that the pose estimation problem is more constrained for multiple cameras than for(More)
The Extended Kalman Filter (EKF) is suitable for real-time pose estimation due its low computational demand and ability to handle the nonlinear perspective camera model. There are many EKF based approaches in the literature; some are very recent while others exist for about two decades. These methods differ in two main aspects: the number and arrangement of(More)
In the past decade, SIFT descriptor has been witnessed as one of the most robust local invariant feature descriptors and widely used in various vision tasks. Most traditional image-classification systems depend on the gray-based SIFT descriptors, which only analyze the gray level variations of the images. Misclassification may happen since their color(More)
  • Greg Lindsey, Hubert H Humphrey, Steve Hankey, Xize Wang, Junzhou Chen
  • 2013
(Minnesota Relay). You may also send an e-mail to bruce.lattu@state.mn.us. (Please request at least one week in advance). The purpose of this project was to develop methodologies for monitoring non-motorized traffic in Minnesota. The project included an inventory of bicycle and pedestrian monitoring programs; development of guidance for manual, field(More)
Many efforts have been devoted to develop alternative methods to traditional vector quantization in image domain such as sparse coding and soft-assignment. These approaches can be split into a dictionary learning phase and a feature encoding phase which are often closely connected. In this paper, we investigate the effects of these phases by separating them(More)
Wireless capsule endoscopy (WCE) has become a widely used diagnostic technique to examine inflammatory bowel diseases and disorders. As one of the most common human helminths, hookworm is a kind of small tubular structure with grayish white or pinkish semi-transparent body, which is with a number of 600 million people infection around the world. Automatic(More)