Huakai Zhang

Learn More
JPEG2000 is the latest still-image coding standard. It was designed to overcome the limitations of the original JPEG standard and provide high quality images at low bit rates. The JPEG2000 algorithm is fundamentally based on the Discrete Wavelet Transform (DWT) and Embedded Block Coding with Optimal Truncation (EBCOT). Both of the algorithms are(More)
Applications for constrained embedded systems require careful attention to the match between the application and the support offered by an architecture, at the ISA and microarchitecture levels. Generic processors, such as ARM and Power PC, are inexpensive, but with respect to a given application, they often overprovision in areas that are unimportant for(More)
Abstract One of the major technical issues facing the designers of modern, hand-held, portable, digital systems is the need to minimize the power consumption of the system to prolong battery life. Many of these systems perform signal processing functions on audio signals (e.g., communications systems, hearing aids, MP3 players, etc). As new signal(More)
Embedded applications are held to a higher standard than desktop applications along a number of dimensions. Not only must the functionality of the application be correct, it often must meet strict time constraints and function with restrictive resource limitations (e.g., memory size, power, weight). Conversely, the hardware systems used to execute embedded(More)
The cyber threat landscape is evolving at a much faster rate than corporate cyber defenses are. Malicious actors have become more audacious in their exploit attempts during the past two years as evidenced by the growing number of publicly acknowledged breaches in the commercial and industrial sectors. Motivations range the gamut from(More)
  • 1