Estimation of Subpixel Motion Using Bispectrum
نویسندگان
چکیده
منابع مشابه
DCT-based subpixel motion estimation
Ut-Va Koc K. J. Ray Liu Electrical Engineering Department and Institute for Systems Research University of Maryland, College Park, Maryland 20742 [email protected] and [email protected] ABSTRACT Inter-pixel interpolation is required for most subpixel motion estimation schemes but it undesirably increases the overall complexity and data ow and deteriorates estimation accuracy. In this paper, we d...
متن کاملSuper-resolution Frame Reconstruction Using Subpixel Motion Estimation
When video data is used for forensic analysis, it may transpire that the level of detail available is insufficient. This is particularly the case when it is derived from sensors deployed in the field since they have limited resolution. For example, a vehicle license plate number may not be legible in video captured during a traffic violation. In such cases, it is desirable to enhance the resolu...
متن کاملSubpixel motion estimation in DCT domain
Currently existing subpixel motion estimation algorithms require interpolation of inter-pixel values. However, it is shown in this paper that, by introducing the concept of pseudo phase shifts in DCT coeecients of a moving object's intensity, subpixel displacements can be estimated on two consecutive frames in DCT domain without interpolating inter-pixel values. Speciically, under a certain con...
متن کاملSubpixel Estimation
– Models of expected spatial variation: discrete structures, such as edges or lines, produce characteristic patterns of data when measured, allowing fitting of a model to the data to estimate the parameters of the structure. – Spatial integration during sampling: sensors typically integrate a continuous signal over a finite domain (space or time), leading to measurements whose values depend on ...
متن کاملSuper-Resolution Reconstruction Without Explicit Subpixel Motion Estimation
Super resolution images are widely used in many fields. Classic super-resolution techniques generally involve fusing a number of low-resolution images with sub-pixel motion difference and correct estimation of the motion. This kind of accurate estimate, however, is not always available. Incorrect estimation of the motion generally produces undesirable results. In this report, two super-resoluti...
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: Research Letters in Signal Processing
سال: 2008
ISSN: 1687-6911,1687-692X
DOI: 10.1155/2008/417915