In this note we show that the height function of a lattice of flats of suitable classes of matroids satisfies the polymatroidal axioms. Moreover, we present a novel proof, by applying matroid theory, for the fact that the minimum distance of a graph-theoretic code C is the smallest number of edges among the edge sets of cycles of G, where G is the graph arising C. AMS Subject Classification: 81Q99

The most common approach for geometric correction is the use of mapping polynomial. . It depends on selection of several clearly discernible points, called ground control points (GCPs), in the distorted image, and map them either to their true positions in ground coordinates (e.g. latitude, longitude) measured from a map, or to georeferenced image (corrected before), coordinates of correspondin...

Since the angular deviation produced when shooting a QR code image by a camera would cause geometric distortion of the QR code image, the traditional algorithm of QR code image correction would produce distortion. Therefore this paper puts forward the algorithm which combines corner detection with convex hull algorithm. Firstly, binaryzation of the collected QR code image with uneven light is o...

Computer vision based projector-camera calibration approaches usually involve with complex geometry transformation and trivial operations, mostly inappropriate for scenarios that under poor illumination or interfering background. An automatic geometric correction method for projector using projection board embedded with optic sensors is proposed, aiming at simplifying the calibration operations...

Problem statement: Cryptosystem using linear codes was developed in 1978 by Mc-Eliece. Later in 1985 Niederreiter and others developed a modified version of cryptosystem using concepts of linear codes. But these systems were not used frequently because of its larger key size. In this study we were designing a cryptosystem using the concepts of algebraic geometric codes with smaller key size. Er...

Diagrammatic problem solving in domains such as architecture and design often involves continual redrawing of existing figures. Drawing programs, such as Visio and CorelDraw, accommodate redrawing using secondary correction techniques. These techniques act when a visual element is moved or changed, making additional changes to the drawing that maintain key preexisting visual relationships. Thes...

The activity of samples in gamma-ray spectrometry is derived from the efficiency curve ε(E) determined for a calibration source (standard). In the case of volume sources the method gives excellent results when the sample and the standard are handled in the same geometric setup as they have the same chemical composition and density and hence the same self-absorption. In practical applications, i...