A new fused Bayesian maximum entropy–variational analysis (BMEVA) method for enhanced radar/synthetic aperture radar (SAR) imaging is addressed as required for high-resolution remote sensing (RS) imagery. The variational analysis (VA) paradigm is adapted via incorporating the image gradient flow norm preservation into the overall reconstruction problem to control the geometrical properties of t...

We propose two variable weighted iterative reconstruction algorithms (VW-ART and VW-OS-SART) to improve the algebraic reconstruction technique (ART) and simultaneous algebraic reconstruction technique (SART) and establish their convergence. In the two algorithms, the weighting varies with the geometrical direction of the ray. Experimental results with both numerical simulation and real CT data ...

A new approach to Bayesian reconstruction is proposed that endows the prior probability distribution with an inherent geometrical flexibility, which is achieved through a transformation of the coordinate system of the prior distribution or model into that of the reconstruction. With this warping, prior morphological information regarding the object that is being reconstructed may be adapted to ...

A method for shape reconstruction and extraction from objects that have a certain regularity but are observed in a scanning electron microscopy image with some degree of overlap is presented. The proposed algorithm first calculates the curvature at each contour point of the object in the digitised binary image in order to detect the vertexes. Reconstruction of the shape of overlapping objects i...

C-arm computed tomography for axially long fieldof-view is an important extension to the current C-arm 3D imaging capability and can be crucial in some intra-operative cases. Recently, a novel data acquisition geometry, i.e., the EllipseLine-Ellipse trajectory, was proposed for this new technique. It has been shown that this trajectory satisfies mechanical motion constraints of a C-arm system a...

Visual perception for walking machines needs to handle more degrees of freedom than for wheeled robots. For humanoids, four or six legged robots, camera motion is a 6D one instead of 3-D or planar motions. Classical 3-D reconstruction methods cannot be applied directly because explicit sensor motion is needed. In this paper, we propose an algorithm for 3-D reconstruction of an unstructured envi...

Coplanarity is a relationship of a set of points that exist on a single plane. Coplanarities can be easily observed in a scene with planer surfaces, and these types of coplanarities have been widely used for 3D reconstructions based on geometrical constraints. Other types of coplanarities that can be observed from images are those observed as cross sections of planes and scenes; for example, po...

Peyronie's disease has been associated with penile shortening and some degree of erectile dysfunction. Surgical reconstruction should be based on giving a functional penis, that is, rectifying the penis with rigidity enough to make the sexual intercourse. The procedure should be discussed preoperatively in terms of length and girth reconstruction in order to improve patient satisfaction. The tu...