-Bit Plane Complexity Segmentation (BPCS) digital picture steganography is a technique to hide data inside an image file. BPCS achieves high embedding rates with low distortion based on the theory that noise-like regions in an image’s bit-planes can be replaced with noise-like secret data without significant loss in image quality. . In this framework we will propose a collaborate approach for s...

This paper presents a new approach based on light striping for reconstructing a 30 model from a real object. The proposed system consists of a light plane projector, camera and cube frame with LEDs attached. As in other light striping systems, the correspondence problem is solved by projecting light plane onto an object inside a frame. However, we use only cross-ratios and vanishing points to s...

We study a model of random surfaces arising in the dimer model on the honeycomb lattice. For a fixed “wire frame” boundary condition, as the lattice spacing ǫ → 0, Cohn, Kenyon and Propp [3] showed the almost sure convergence of a random surface to a non-random limit shape Σ0. In [11], Okounkov and the author showed how to parametrize the limit shapes in terms of analytic functions, in particul...

Abstract. This paper investigates the problem of reconstruction of 3D human motion pose from uncalibrated monocular video sequences. Firstly, we prove that the transform between the change of Z coordinate, (dz), and the corresponding change of scale factor s, (ds), is a linear transformation under perspective camera model. Then, we locate a frame in which the human figure with three linked body...

In the initial phase of structural part design, wire-frame models are sometimes used to represent the shapes of curved faces. Finite element analysis (FEA) of the curved faces requires that a well-shaped, well-sized mesh be smoothly generated on them. The algorithm described in this paper generates such a mesh from a wireframe model by the following three steps: (1) projection of the vertices o...

Recently, a high frame rate (HFR) imaging method based on limited diffraction beam (LDB) theory has been developed. In this method, a twodimensional (2D) or three-dimensional (3D) image is constructed with a single plane wave transmission and thus a theoretical frame rate of 3750 frames/second can be obtained for biological soft tissues at a depth of about 200 mm. Because a plane wave is used t...

Timber platform-frame shear walls are characterized by high ductility and diffuse energy dissipation but limited in-plane shear resistance. A novel lightweight constructive system composed of steel columns braced with oriented strand board (OSB) panels was conceived and tested. Preliminary laboratory tests were performed to study the OSB-to-column connections with self-drilling screws. Then, th...

We study a model of random crystalline surfaces arising in the dimer model on the honeycomb lattice. For a fixed “wire frame” boundary condition, as the lattice spacing ǫ → 0, Cohn, Kenyon and Propp [3] showed the almost sure convergence of a random surface to a non-random limit shape Σ0. We show here that when Σ0 has no facets, for a large family of boundary conditions approximating the wire f...

Recently, the availability of low cost depth cameras has provided 3D sensing capabilities for mobile robots in the form of dense 3D point clouds, usable for applications like 3D mapping and reconstruction, shape analysis, pose tracking and object recognition. For all the aforementioned applications, processing the raw 3D point cloud in real time and at full frame rates may be infeasible due to ...