Dynamic Occlusion Analysis in Optical Flow Fields
نویسندگان
چکیده
منابع مشابه
Turbulence in Optical Flow Fields
In this thesis I will examine the relations between turbulence as found in physical systems and turbulence in optic ow elds. I will record some image sequences of a theoretically well understood turbulent physical system and from these image sequences I will examine the relations between the optic ow of the image sequences and the physical parameters of the turbulent system. I will examine the ...
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It has been recently shown that a convolutional neural network can learn optical flow estimation with unsupervised learning. However, the performance of the unsupervised methods still has a relatively large gap compared to its supervised counterpart. Occlusion and large motion are some of the major factors that limit the current unsupervised learning of optical flow methods. In this work we int...
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Psychophysical thresholds for the detection of divergence (expansion and contraction) in the presence of a translational component are determined. Stimuli consist of sparse random dot patterns. Lifetime, number of dots, divergence, and translational velocity are varied over a wide range. Moreover, the two major characteristics of a divergence pattern, namely, the direction of and the velocity a...
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valuable as a source of spatial information. Current techniques provide flow fields which are noisy and sparse, mak ing the recovery of spatial proper ties difficul t at best. This paper describes a technique for locating discontinuities in optical flow, which typically correspond to object boundaries. A simple blurring interpolator is used to smooth out noise and produce denser fields. Discont...
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Modern large displacement optical flow algorithms usually use an initialization by either sparse descriptor matching techniques or dense approximate nearest neighbor fields. While the latter have the advantage of being dense, they have the major disadvantage of being very outlier-prone as they are not designed to find the optical flow, but the visually most similar correspondence. In this artic...
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ژورنال
عنوان ژورنال: IEEE Transactions on Pattern Analysis and Machine Intelligence
سال: 1985
ISSN: 0162-8828
DOI: 10.1109/tpami.1985.4767677