Michael Joshua Landau

Johns Hopkins University Applied Physics Laboratory (APL) · Air and Missile Defense Sector

Structured-light (SL) depth sensors are widely used because of their simplicity in design and ability to process depth data with minimal computational expense. Certain SL light coding methods can, however, lead to a loss of information, as well as inhomogeneous depth errors that depend on the composition and properties of the scene. This results in...

With the emergence of the Microsoft Kinect sensor, many developer communities and research groups have found countless uses and have already published a wide variety of papers that utilize the raw depth images for their specific goals. New methods and applications that use the device generally require an appropriately large ensemble of data sets wi...

Since the emergence of the commodity-priced, small-sized Microsoft Kinect TM sensor, 3D object pose estimation has become prevalent in many applications across a wide variety of disciplines. However, because most current methods require a hard assignment between a measurement point cloud and a given CAD model point cloud for alignment, accurate pos...

The stochastic error characteristics of the Kinect sensing device are presented for each axis direction. Depth (z) directional error is measured using a flat surface, and horizontal (x) and vertical (y) errors are measured using a novel 3D checkerboard. Results show that the stochastic nature of the Kinect measurement error is affected mostly by th...

Atherosclerosis is a chronic inflammatory disease of large and medium-sized arteries characterized by leukocyte accumulation in the vessel wall. Both innate and adaptive immune responses contribute to atherogenesis, but the identity of atherosclerosis-relevant antigens and the role of antigen presentation in this disease remain poorly characterized...

Atherosclerosis is an immune-mediated disease associated with lipid accumulation and formation of atherosclerotic plaques in the major arteries of the body. Vascular dendritic cells (DC) are present throughout the adventitia of the normal mouse aorta and expand under atherosclerotic conditions, but their function remains incompletely understood. To...

Recent advances in multiphoton microscopy have allowed the capture of dendritic and T cells on video in a 3D volume. This paper reports on an approach for automatically detecting and tracking the cells and collecting statistics on their characteristics of motion and interaction durations. A novel method to extend the track longevity is presented, w...

Acoustical properties of speech have been shown to be related to mental states such as remission and depression. The objective of this project was to relate the energy in frequency bands with the severity of the mental state using the Beck Depression Inventory (BDI). Recorded speech was obtained from male and female subjects with mental states of r...