Computation of component image velocity from local phase information
International Journal of Computer Vision
Multidimensional Orientation Estimation with Applications to Texture Analysis and Optical Flow
IEEE Transactions on Pattern Analysis and Machine Intelligence
Numerical recipes in C (2nd ed.): the art of scientific computing
Numerical recipes in C (2nd ed.): the art of scientific computing
Image-flow computation: an estimation-theoretic framework and a unified perspective
CVGIP: Image Understanding
Performance of optical flow techniques
International Journal of Computer Vision
The robust estimation of multiple motions: parametric and piecewise-smooth flow fields
Computer Vision and Image Understanding
Computer Vision and Image Understanding - Special issue on empirical evaluation of computer vision algorithms
Accuracy vs. Efficiency Trade-offs in Optical Flow Algorithms
ECCV '96 Proceedings of the 4th European Conference on Computer Vision-Volume II - Volume II
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Measurement of motion in transabdominal ultrasound sequences of the small bowel is hampered by the unstructured, textured appearance of the images. We investigate a method of measuring Optical Flow in the sequences, based on an analysis of the spatio-temporal frequency spectrum. The method requires no unrealistic assumptions about the distribution of energy in the frequency spectrum and extends readily to deal with the aperture problem. Evaluation on synthetic image sequences indicates it has advantages in accuracy and precision of velocity estimates. Qualitative evaluation on real ultrasound sequences indicate encouraging performance, provided occurrence of the aperture problem is identified and appropriate processing applied.