The mechanical response of magnesium alloy AZ31B is addressed thanks to four-point bending tests. These alloys are known have an asymmetrical behavior in tension-compression. test is, therefore, a good candidate analyze this effect because it combines the two solicitations. Digital image correlation used measure evolution strain fields during test. Measurements shift neutral line (zero strain) ...

The MPEG compression standard1 will be used for the distribution of many new digital TV services. Also, MPEG compression is already being used for contributions into the studio, because of bandwidth/bit-rate restrictions on some incoming connections. In addition, there will be pressure to use high levels of compression in future TV archives in order to give on-line access to thousands of hours ...

We address the problem of improving variable-length-toxed-length codes (VF codes). A VF code is an encoding scheme that uses a xed-length code, and thus, one can easily access the compressed data. However, conventional VF codes usually have an inferior compression ratio to that of variable-length codes. Although a method proposed by T. Uemura et al. in 2010 achieves a good compression ratio com...

In this paper we present a time domain signal compression scheme based on the coding of line segments which are used to approximate the signal. These segments are t in a way that is optimal given the number of retained signal samples. Although the approach is useful for many types of signals, we focus in this paper on compression of ElectroCardioGram (ECG) signals. ECG signal compression has tr...

ETRI Journal, Volume 28, Number 2, April 2006 ABSTRACT⎯This letter proposes a new near-lossless image compression method with only one line buffer cost for a digital camera with Bayer format image. For such format data, it can provide a low average compression rate (4.24bits/pixel) with high-image quality (larger than 46.37dB where the error of every pixel is less than two). The experimental re...

Most of the image compression techniques currently available were designed mainly with the aim of compressing continuous-tone natural images. However, if this assumption is not verified, such as in the case of histogram sparseness, a degradation in compression performance may occur. In this paper, we analyze the impact of histogram sparseness in three state-of-the-art lossless image compression...

In order to decrease the communication bandwidth and save the transmitting power in the wireless endoscopy capsule, this paper presents a new near-lossless image compression algorithm based on the Bayer format image suitable for hardware design. This algorithm can provide low average compression rate (2.12 bits/pixel) with high image quality (larger than 53.11 dB) for endoscopic images. Especia...