| Paper: | BIO-P3.12 | ||
| Session: | Biomedical Imaging | ||
| Time: | Thursday, May 18, 10:00 - 12:00 | ||
| Presentation: | Poster | ||
| Topic: | Bio Imaging and Signal Processing: Ultrasound imaging | ||
| Title: | TWO-DIMENSIONAL SUB-SAMPLE SHIFT ESTIMATION USING PLANE PHASE FITTING | ||
| Authors: | Adrian Basarab, Hervé Liebgott, CREATIS, France; Cristian Grava, Applied Electronics Laboratory, Romania; Philippe Delachartre, CREATIS, France | ||
| Abstract: | This paper investigates the problem of two-dimensional shift estimation between two sinusoids, proposing a method based on a least square plane fitting of the phases of two complex functions. The complex functions are defined using the cross-correlation and its Hilbert transforms. This estimation method is shown to be unbiased for long signals and high signal-to-noise ratios. The case of truncated signals is considered and an iterative version of the estimator, giving more accurate results in these situations, is proposed. | ||
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