Image Quality Improvement Performance Using the Synthetic Aperture Focusing Technique Data
A wavelet application to improve image quality using the Synthetic Aperture Focusing Technique (SAFT) Data is presented. This Application is based on a wavelet package analysis applied to RF signals sensed by transducers in a scanning process. SAFT is performed for each level in the wavelet package decomposition tree. For image forming, an addition and delay algorithm with focusing on pixels has been implemented, and calculations have been carried out using the Matlab toolbox. This method has been applied to image forming for a point reflector simulated using the Field II toolbox and for a phantom constructed using nine acrylic reflectors. Obtained results show that axial resolution is improved and formed images have a better signal-noise ratio.
KeywordsSynthetic aperture focusing Ultrasonic imaging Data processing Wavelets
The authors acknowledge the support of DGAPA-UNAM (PAPIIT IN-109207).
- 2.Walker, J.S.: A primer on Wavelets and their scientific application, University of Wisconsin-Eua Claire, CHAPMAN & HALL/CRC (1999)Google Scholar
- 4.Jensen, J.A., Svendsen, N.B.: Field: A program for simulating ultrasound systems. Med. Biol. Eng. Comp., 10th Nordic-Baltic Conference on Biomedical Imaging, vol. 4, Supplement1, Part 1: 351-353 (1996b)Google Scholar
- 5.Onda Corporation. Available: http://www.ondacorp.com/index1.html