The following paper introduces the work conducted to create a relative virtual mouse based on the interpretation of head movements and face gesture through a low cost camera and the optical flow of the images. This virtual device is designed specifically as an alternative noncontact pointer for people with mobility impairments in the upper extremities and reduced head control. The proposed virt...

The Digital Micromirror Device (DMD) has made great strides in both performance and reliability. Each device consists of more than 500,000 individually addressable micromirrors. Digital Light Processing technology, based on the DMD, has been used in such diverse products as projection displays with film-like projected images and photographic-quality printers. Reliability testing of the DMD has ...

A new digital signal processor (DSP)-based data acquisition system has been designed and installed at the Advanced Photon Source. This system uses a commercial VME-based DSP card to acquire and process x-ray blade signals to determine x-ray beam position for both bending magnet and insertion device beamlines. The system also acquires and processes position data from the narrowband rf BPMs that ...

In this paper we report on a multi-resonant transducer that may be used to replace a traditional speech processor in cochlear implant applications. The transducer, made from an array of micro-machined polymer resonators, is capable of passively splitting sound into its frequency sub-bands without the need for analog-to-digital conversion and subsequent digital processing. Since all bands are me...

A large range of devices (from PDA to high-end TV) can receive and decode digital video. However, the capacity of one device is very different from the capacity of another device. This paper discusses how the same video but differently encoded can be efficiently distributed to a set of receiving devices. The key technology is scalable video coding. The paper shows how a framework assists in ada...

We have developed spectrally encoded photoacoustic microscopy using a digital mirror device for multi-wavelength tomography, which enables fast spectral imaging of optical absorption. The optical illumination wavelengths are multiplexed at a laser pulse repetition rate of ≈ 2 kHz. Liquid samples, whole blood, and blood vessels in mouse ears were imaged. Compared with internal wavelength tuning ...

A write blocker allows read-only access to digital data on a secondary storage device by placing a hardware or software filter between the host computer and the storage device. The filter monitors I/O commands sent from the application on the host computer, only allowing commands to the device that make no changes to its data. This paper examines the I/O commands used to access secondary storag...

An active device is an electron device, such as a transistor, capable of delivering power amplification by converting dc bias power into time varying signal power. It delivers a greater energy to its load than if the device were absent. The charge control framework [1-3] presents a unified understanding of the operation of all electron devices and simplifies the comparison of the several active...

It is the dream of every digital imaging operator: dealing with a picture that always looks the same, regardless of the processing device: scanner, monitor or printer. Absolute consistency is impossible to achieve, due to objective limitations with colors that each device can render and/or process, but high quality results can be obtained with a color management system that is up to the job; an...

This paper proposed a fast resampling method for digital image. Recently, using mobile device is very popular. It is very important to make the images suitable for every different mobile device. There are many methods to change the size of image. The most important methods are image resampling and image retargeting. This paper proposed a fast resampling method. The method is suitable for mobile...