Fast and straightforward method to estimate sub-pixel level displacement field

• Type: Article in International Conference Proceedings Book
• Date: 2008

Authors

Sousa, A (Author) Other; Morais, J (Author) Other; Filipe, V (Author) Other; Jesus, A (Author) Other; Vaz, MAP (Author) FEUP

Conference proceedings International

Title: Computational Vision and Medical Image Processing: VipIMAGE 2007

Pages: 69-73

I ECCOMAS Thematic Conference on Computational Vision and Medical Image Processing: VipIMAGE 2007 Faculdade de Engenharia da Universidade do Porto, Porto, Portugal 17-19 October 2007

Faculdade de Engenharia da Universidade do Porto, Porto, Portugal, 17-19 October 2007

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 0 Citations

Scientific classification

FOS: Natural sciences > Computer and information sciences

Other information

Authenticus ID: P-004-5KS

Abstract (EN): This paper presents a fast and straightforward method to assess displacement fields on the surface of a planar specimen with sub-pixel resolution. First, pixel level displacements are obtained by cross correlation (CC) of two consecutive images, used as the image similarity measure. Next, sub-pixel displacement information is calculated from the CC coefficients matrix using a similarity interpolation method. Finally, sub-pixel estimation error cancellation is performed. Several experiments were conducted to validate the proposed method effectiveness, applied to chestnuts compression test for quality control purposes.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5