Towards Space-Time Semantics in Two Frames (CROSBI ID 187782)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Brkić, Karla ; Pinz, Axel ; Kalafatić, Zoran ; Šegvić, Siniša
engleski
Towards Space-Time Semantics in Two Frames
We present a novel, low-level scheme to analyze spatial and temporal change within a local support region. Assuming available region correspondences between two adjacent frames, we divide each region into a regular grid of patches. Depending on the change of an image function inside the patch over time, each patch is assigned weights for the following four labels: “C” for a constant patch, “O” when new information originates from outside the support region, “I” for “inner” changes, and “N” for information from neighboring patches. Our method goes beyond optical flow, as it provides an additional semantic level of understanding the changes in space-time. We demonstrate how our novel “COIN” scheme can be used to categorize local space-time events in image pairs, including locally planar support regions, 3D discontinuities, and virtual vs. real crossings of 3D structures.
video analysis; space-time semantics; space-time descriptor
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Podaci o izdanju
7585
2012.
121-130
objavljeno
0302-9743
10.1007/978-3-642-33885-4_13