Two species of desert ants - the North African Cataglyphis fortis and the central Australian Melophorus bagoti - differ markedly in the visual complexity of their natural habitats: featureless salt pans and cluttered, steppe-like terrain, respectively. Here we ask whether the two species differ in their navigational repertoires, in particular, whether in homing they place different emphasis on ...

For the fast and accurate self-localization of mobile robots, landmarks can be used very efficiently in the complex workspace. In this paper, we propose a simple color landmark model for self-localization and a fast landmark detection and tracking algorithm based on the proposed landmark model. We develop a color landmark with a symmetric and repetitive structure, which shows invariant color hi...

This paper discusses a new approach to improve tone recognition by modeling the tone nucleus with vowel landmark detection. The tone nucleus region is identified based on vowel landmark frames derived by an automatic landmark recognition system. In the corresponding tone recognition experiments, the best results with landmark-based tone nucleus regions outperform the best baseline system result...

Ultrasonography is a safe, rapid, and non-invasive diagnostic tool that has been previously used for imaging infants and canine neonatal brains. The purpose of the present study was to describe the ultrasonographic appearance of the brain in clinically normal caprine neonates. Ultrasonographic examination was done on 12 day-old goat kids, transverse and sagittal transcranial scans were obtained...

and includes sites of high botanical interest. From 2000 to 2004, volunteers sent by the environmental charity Earthwatch helped to gather biodiversity data to back the scientific case for the sanctuary. Using this research, Earthwatch and NCRC demonstrated to the tribal chiefs that the creation of a sanctuary would provide a profitable alternative to unsustainable hunting and fishing. Investme...

From the large amount of web photos and other meta knowledge, recognizing landmark images has been actively studied in recent years. Previous landmark recognition research based on visual similarities have several limitations in terms of sparseness, efficiency and functionality. In this paper, I proposed a landmark hierarchy which consists of images, geographical clusters, visual clusters and t...

background: long-term tunneled catheters are used for the hemodialysis or chemotherapy in many patients. proper placement of the catheter tip could reduce early and late catheter related complications. aim of the present study was to evaluate a new formula for proper placement of tunneled hemodialysis or infusion port device by using an external anatomic landmark. materials and methods: a total...

We present a simple artificial landmark model and a robust tracking algorithm for the navigation of indoor mobile robots. The landmark model is designed to have a three-dimensional structure consisting of a multicolored planar pattern. A stochastic algorithm based on Condensation [1] tracks the landmark model robustly using the color distribution of the pattern . A new selflocalization algorith...

We present a novel convolutional neural network (CNN) design for facial landmark coordinate regression. We examine the intermediate features of a standard CNN trained for landmark detection and show that features extracted from later, more specialized layers capture rough landmark locations. This provides a natural means of applying differential treatment midway through the network, tweaking pr...