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New synthesis algorithm developments and hardware implementations for image processing applied to medical diagnostic and communication systems

 

Name of the host institutions:        Nanyang Technological University, Singapore

Singapore Project Manager:          Professor Anamitra Makur

School of EEE

Polish Project Manager:                 Prof. dr hab. inż. Krzysztof Wawryn

Electronics and Information Science Faculty

 

            The main objective of the project is to develop real time system for image analysis and enhancement dedicated to image recognition, medical diagnostic and communication systems. The system performance will be based on numerically robust techniques for two-dimensional signal processing. The scope of the project covers: research of synthesis algorithms, realization structures, and DSP implementation. 2-D FIR and IIR linear digital filters are planned to be analyzed with special consideration to low sensitivity to finite precision arithmetic, limit circle, absence of overflow oscillations, and natural stability.

DSP processing is closely related to A/D, D/A versatility and different format conversions. To provide a versatility to the system, it is necessary to implement techniques which allow to adopt converter parameters to different input signals. One can achieve it using reconfiguration and parameterization of input A/D blocks so it could be possible to choose optimal resolution and processing speed by a DSP system. The most effective approach is to start processing right after the signal leave CCD converter. It allows to obtain source information about received signals and control acquiring process. Further constrains occur for mobile applications. Such peripherals should be small, have suitable resolution (16-22 bits) and speed (100 000 samples per picture), and low power dissipation.

Enumerated constraints are beyond currently manufactured A/D and D/A converters, so to meet the demands we have to design dedicated A/D's and D/A's.

 

1)      Performance analysis of currently available two dimensional (2-D) synthesis algorithms considering such affects as low sensitivity to coefficient changes, low noises, no limit circles, etc.

2)      Performance analysis of currently available a/d and d/a converters interfacing DSP
2-D filtering

3)      Development of 2-D effective synthesis algorithms suitable to numerical evaluation with stress on loss-less structures including lifting or lifting-like scheme approach.

4)      Development of reconfigurable a/d and d/a structures satisfying conversion speed and resolution

5)      Usefulness verification of the elaborated algorithms and converter structures via simulation analysis.

6)      Hardware implementation of the obtained 2-D structures in FPGA and DSP processors and interfacing to a/d and d/a converters. Practical verification of the system performance in mobile application.

7)      Application of 2-D systems for medical data processing and communication, such as denoising, feature extraction, and compression of MRI images.