In robotics research is an increasing need for knowledge about human motions. However humans tend to perceive motion in terms of discrete motion primitives. Most systems use data-driven motion segmentation to retrieve motion primitives. Besides that the actual intention and context of the motion is not taken into account. In our work we propose a procedure for segmenting motions according to th...

reformatted images from non-gated and self-gated SPACE imaging. Note that images suffered from severe motion artifacts due to swallowing without self-gating motion compensation. Figure 2. (a) Correlation coefficients calculated between each projection and the reference profile; (b) Self-gating projection signals of the neck as a function of time; (c) Two projection signals acquired with and wit...

The paper presents a formal approach to structuring multi-robot system controllers. It was used to structure the MRROC++ based controllers. The deduced structure is such that on the one hand it is not too complex for implementation and on the other hand it does not limit the tasks that can be executed. Both coordinated and uncoordinated motions are taken into account. Use of diverse sensors is ...

In this paper, we propose a panorama-based object tracking scheme for wide-view surveillance systems that can detect and track moving objects with a pan-tilt camera. A dynamic mosaic of the background is progressively integrated in a single image using the camera motion informatin. For the camera motion estimation, we calculate affine motion parameters for each frame sequentially with respect t...

This paper presents a method for pixel-wise segmentation of moving regions using sparse motion cues on an image from a freely moving camera. The main idea is to utilize residual motion, i.e., motion relative to a background, on sparse grid points. Our algorithm consists of three parts: global motion estimation, characterization of points based on sparse motion cue, and pixel-wise labeling of mo...

We present, in this article, a new algorithm for motion compensation that uses a motion estimation method based on tangent distance. The method is compared with a BlockMatching based approach in various common situations. Whereas Block-Matching algorithms usually only predict positions of blocks over time, our method also predicts the evolution of pixels into these blocks. The prediction error ...

In this paper, we propose a frame rate upconversion algorithm using the weighted-adaptive motioncompensated interpolation (WAMCI) that reduces the block artifacts due to the failure of motion estimation and blockbased processing. The proposed method is based on the interpolation scheme by weighted sum of multiple motioncompensated interpolation (MCI) images. Also, in the proposed method, the bl...

† Work supported in part by Institute for Information Industry. Abstract The measure of the ‘goodness’ of a motion estimation algorithm is governed by it’s speed, the quality of motion compensation it provides, and the size of the resulting bitstream. Hence, algorithms should be evaluated based on this ‘speed-quality-bitrate’ tradeoff. Previously introduced fast motion estimation algorithms foc...

Existing schemes for 3-D Magnetic Resonance (MR) images, such as block matching method and uniform meshbased scheme, are inadequate to model the motion field of MR sequence because deformation within a mesh element may not all be similar. We propose a scheme consisting of (a) content-based mesh generation using optic flow between two consecutive images (b) forward motion tracking (c) motion com...