Two Dimensional Pseudo-Wiener Filtering in Ultrasonic Imaging for Nondestructive Evaluation Applications

This paper deals with the use of a two dimensional pseudo-Wiener filter for ultrasonic image enhancement. Experimental results are presented to demonstrate the effectiveness of the technique for the improvement of the lateral resolution and image enhancement of ultrasonic images in materials such as graphite/epoxy composites and stainless steel. The difficulties encountered in the implementation of the filter will be delineated. Methods of overcoming some of these ‘implementational hurdles’ will be suggested

Blur Reduction in Ultrasonic Images Using Pseudo Three-Dimensional Wiener Filtering

The ability to quantitatively image material anomalies with ultrasonic methods is severely restricted by the axial and lateral resolution of the interrogating transducer. Axial resolution is controlled by the pulse duration of the transducer with shorter pulse durations yielding better axial resolution. Lateral resolution is controlled by the width of the interrogating beam with narrower beams providing better lateral resolutio

Two Dimensional Pseudo-Wiener Filtering in Ultrasonic Imaging for Nondestructive Evaluation Applications

This paper deals with the use of a two dimensional pseudo-Wiener filter for ultrasonic image enhancement. Experimental results are presented to demonstrate the effectiveness of the technique for the improvement of the lateral resolution and image enhancement of ultrasonic images in materials such as graphite/epoxy composites and stainless steel. The difficulties encountered in the implementation of the filter will be delineated. Methods of overcoming some of these 'implementational hurdles ' will be suggested

Providing World-Class Facilities and Supporting Systems for the Economic Integration of Hong Kong and the Pearl River Delta

The Pearl River Delta (PRD) has entered a new phase of development because of globalisation and China's accession to the World Trade Organisation (WTO). The PRD has made a rapid advancement in manufacturing, the high-tech industry, logistics, finance, and tourism. At the same time, competition among different cities in the PRD, and from other regions in China, has also intensified. To promote regional competitiveness, the PRD has to integrate its advantages in the manufacturing sector with that of Hong Kong's service sector. Hong Kong has to transform from a city that just plays a middleman's role into a regional business centre. To realize this transformation, the provision of world-class "hardware" facilities is not sufficient. More importantly, Hong Kong has to eradicate - within the provision of "one country, two systems" - all barriers that impede it from functioning as a regional service centre by improving cross-border freight and passenger traffic and restructuring the service sector to attract more businessmen from the Mainland to use services in Hong Kong. Together with an effective talent policy and urban development strategy, Hong Kong can become a regional financial and business centre that provides world-class facilities and supports for further advances in the development of the PRD