A bow with horse tail hair is used to play the violin. New and worn-out bow hairs were observed by atomic force microscopy. The cuticles of the new bow hair were already damaged by bleach and delipidation, however the worn-out bow hairs were much more damaged and broken off by force, which relates to wearing out.

The influence of Cu-Al2O3-Zn powder mixtures for cold spraying on the properties coatings is studied. were deposited to restore worn-out copper contact wires, which used as a substrate. main parameters, such adhesion, specific electrical conductivity, hardness, and wear resistance, examined. content Al2O3 in mixture varied from 30% 60%, Zn, 0% 20%. results obtained indicate that 60Cu-40Al2O3 co...

The depiction of the irregularity in nature is crucial for the realistic representation of the virtual world. For example, real pavement blocks are not always paved evenly, but partially sink over time. Many games or virtual reality systems however represent the pavement too neatly with perfectly flattened surfaces and clean texture images. In this paper, we suggest a method for representing re...

Autonomous vehicles will be used without a driver. This will make them less inspected because the driver often listens to the engine and its sounds; however, a passenger in an autonomous vehicle will do other things and even sleep, so there will be no effective inspection on the engine and particularly on the pipes system. This paper suggests a technique to alert about worn out pipes before the...

We present a new technique, which we call ‘texture unmapping’, and its application to image reconstruction. A parametric model of an image is made, and then subtracted from the image to leave a non-parametric component. The two components may then be reconstructed independently and then recombined to give a final reconstruction. Results of the new technique are given on a range of images.

A method for the automatic reconstruction of 3D objects from multiple camera views for 3D multimedia applications is presented. Conventional 3D reconstruction techniques use equipment that restrict the flexibility of the user. In order to increase this flexibility, the presented method is characterized by a simple measurement environment, that consists of a new calibration pattern placed below ...