Interpolation-free subpixel motion estimation techniques in DCT domain
نویسندگان
چکیده
منابع مشابه
Interpolation-free subpixel motion estimation techniques in DCT domain
Currently existing subpixel motion estimation algorithms require interpolation of interpixel values which undesirably increases the overall complexity and data flow and deteriorates estimation accuracy. In this paper, we develop discrete cosine transform (DCT)-based techniques to estimate subpel motion at different desired subpel levels of accuracy in the DCT domain without interpolation. We sh...
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...
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Currently existing subpixel motion estimation algorithms require interpolation of inter-pixel values which undesirably increases the overall complexity and data ow and deteriorates estimation accuracy. In this paper, we develop DCT-based techniques to estimate subpel motion at diierent desired subpel levels of accuracy in DCT domain without interpolation. We show that subpixel motion informatio...
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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...
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The feedback loop for temporal prediction of traditional implementations of an MPEG-compliant video coder requires conversion of images from the spatial domain to the transform domain and then back to the spatial domain due to the restriction of motion estimation schemes performed only in the spatial domain, severely limiting the throughput of the coder. However, it was shown that the low-compl...
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ژورنال
عنوان ژورنال: IEEE Transactions on Circuits and Systems for Video Technology
سال: 1998
ISSN: 1051-8215,1558-2205
DOI: 10.1109/76.709412