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In video frame rate conversion, unavailable frames are reconstructed from existing frames based on interpolated motion vectors. Due to an error in estimating motion vectors and an occlusion effect, it is possible that intensity information is not provided to every pixel in the reconstructed frame. Pixels whose intensity is missing become holes in the reconstructed frame. This paper proposes the reconstruction...
In this paper, a new digital image stabilization (DIS) algorithm based on Circular-Projection is proposed to stabilize videos captured by self-rotating crafts. Considering the features of rotation movements and requirements of real-time, polar transformation and gradient projection are integrated into the algorithm, and DaVinci DM6446 ARM+DSP dual-core platform is utilized to build the system. The...
Road segmentation is an essential functionality for supporting advanced driver assistance systems (ADAS) such as road following and vehicle and pedestrian detection. Significant efforts have been made in order to solve this task using vision-based techniques. The major challenge is to deal with lighting variations and the presence of objects on the road surface. In this paper, we propose a new road...
In this paper, we propose a novel approach for video stabilization using Markov random field (MRF) modeling and maximum a posteriori (MAP) optimization. We build an MRF model describing a sequence of unstable images and find joint pixel matchings over all image sequences with MAP optimization via Gibbs sampling. The resulting displacements of matched pixels in consecutive frames indicate the camera...
This paper presents the design and implementation of an approach to creating a single-viewpoint full view panorama photograph from a set of image sequence. To ensure the simplicity for both shooting and stitching, input images are individual frames extracted from a panning video sequence. The ordered approach also proves to be computationally less expensive than the case where input images are disordered...
In recent years, facial expressions of pain have been the focus of considerable behavioral research. Such work has documented that pain expressions, like other affective facial expressions, play an important role in social communication. Enabling computer systems to recognize pain expression from facial images is a challenging research topic. In this paper, we present two systems for pain recognition...
We present a high-performance hardware architecture for H.264/AVC full-mode intra-frame encoding. We propose a novel method to alleviate performance bottleneck caused by the long data dependency loop among 4times4 blocks. Synthesized into a TSMC 0.13 mum CMOS cell library, our design takes 212 K gates to run at 138 MHz and is able to real-time encode 1080HD (1920times1088) video sequences at 30 frames...
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