OBJECTIVES The aim of this study was to emphasize the necessity of a standard in segmentation threshold and algorithm for measuring volume and surface area of mastoid air cell system (MACS). METHODS First, we obtained axial computed tomography scans of 54 normal temporal bones from 27 subjects. Then, we manipulated Hounsfield units (HU) image data in DICOM (digital imaging and communications ...

Abstract For abelian surfaces of Picard rank 1, we perform explicit computations the cohomological functions ideal sheaf one point, and in particular basepoint-freeness threshold . Our main tool is relation between Bridgeland stability. In virtue recent results Caucci Ito, these provide new information on syzygies polarized surfaces.

The problem of binarization of gray level images acquired under nonuniform illumination is reconsidered. Yanowitz and Bruckstein proposed to use for image binarization an adaptive threshold surface, determined by interpolation of the image gray levels at points where the image gradient is high. The rationale is that high image gradient indicates probable object edges, and there the image values...