Image Representation Using 2D Gabor Wavelets
IEEE Transactions on Pattern Analysis and Machine Intelligence
The Frequency Structure of One-Dimensional Occluding Image Signals
IEEE Transactions on Pattern Analysis and Machine Intelligence
On the Fourier Properties of Discontinuous Motion
Journal of Mathematical Imaging and Vision
Spatio-Temporal Image Processing: Theory and Scientific Applications
Spatio-Temporal Image Processing: Theory and Scientific Applications
Measurement of Image Velocity
Spatiotemporal approach for time-varying global image motion estimation
IEEE Transactions on Image Processing
A harmonic retrieval framework for discontinuous motion estimation
IEEE Transactions on Image Processing
Using skew Gabor filter in source signal separation and local spectral orientation analysis
Image and Vision Computing
| Hi-index | 0.15 |
In the energy spectrum of an occlusion sequence, the distortion term has the same orientation as the velocity of the occluding signal. Recent works claimed that this oriented structure can be used to distinguish the occluding velocity from the occluded one. Here, we argue that the orientation structure of the distortion cannot always work as a reliable feature due to the rapidly decreasing energy contribution. This already weak orientation structure is further blurred by a superposition of distinct distortion components. We also indicate that the superposition principle of Shizawa and Mase for multiple motion estimation needs to be adjusted.