Actas de congresos
Ultrasonic image compounding method based on the instantaneous phase image
Fecha
2017-03-08Registro en:
2016 12th IEEE International Conference on Industry Applications, INDUSCON 2016.
10.1109/INDUSCON.2016.7874462
2-s2.0-85016995477
6405339510883203
0000-0003-4201-5617
Autor
Universidade Tecnológica Federal Do Paraná-UTFPR
Universidade Estadual Paulista (Unesp)
Institución
Resumen
The quality of ultrasonic images depends on array configuration, image beamforming algorithm, propagation modes and signal-to-noise ratio. Some alternatives to improve image quality are related to the use of coherence weighting factors and image compounding techniques. This work proposes an image compounding method based on the Instantaneous Phase (IP) image. From the analysis of this image and the application of the respective threshold, a coherence weighting factor is created, which is multiplied by the conventional amplitude images to reduce artifacts and improve contrast. The images are then combined according to the indication of the presence of reflectors in the IP image. The method was experimentally tested on an aluminum plate with artificial defects. As result artifacts and dead zone are reduced, and contrast and defects detection are improved.