Asymmetric autocorrelation function to resolve directional ambiguity in PIV images
نویسندگان
چکیده
منابع مشابه
Asymmetric Autocorrelation Function To Resolve Directional Ambiguity In PIV Images
Autocorrelation of a double-exposed image, unlike cross-correlation between two images, produces a correlation function that is symmetric about the origin. Thus, while it is possible to calculate the speed and direction of tracer particles in a particle image velocimetry (PIV) image using autocorrelation, it is impossible to tell whether the velocity is in the positive or negative direction. Th...
متن کاملUsing Context to Resolve Ambiguity in Sketch
This thesis presents methods for improving sketch understanding, without knowledge of a domain or the particular symbols being used in the sketch, by recognizing common sketch primitives. We address two issues that complicate recognition in its early stages. The first is imprecision and inconsistencies within a single sketch or between sketches by the same person. This problem is addressed with...
متن کاملUsing Subcategorization to Resolve Verb Class Ambiguity
Levin's (1993) taxonomy of verbs and their classes is a widely used resource for lexical semantics. In her framework, some verbs, such as give exhibit no class ambiguity. But other verbs, such as write, can inhabit more than one class. In some of these ambiguous cases the appropriate class for a particular token of a verb is immediately obvious from inspection of the surrounding context. In oth...
متن کاملUsing Context to Resolve Ambiguity in Sketch Understanding
This thesis presents methods for improving sketch understanding, without knowledge of a domain or the particular symbols being used in the sketch, by recognizing common sketch primitives. We address two issues that complicate recognition in its early stages. The first is imprecision and inconsistencies within a single sketch or between sketches by the same person. This problem is addressed with...
متن کاملNon-Local Contexts Help Resolve Ambiguity
This paper addresses nonlocal context effects in the interpretation of ambiguous utterances in natural language. We examine equivocation as a form of discourse ambiguity and demonstrate that nonlocal contexts can resolve ambiguity by providing a method for exploring the effects of global context. Of particular relevance is that the locus of ambiguity within the texts analyzed is within and acro...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Experiments in Fluids
سال: 1998
ISSN: 0723-4864,1432-1114
DOI: 10.1007/s003480050247