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In this paper, we extend image stitching to video stitching for videos that are captured for the same scene simultaneously by multiple moving cameras. In practice, videos captured under this circumstance often appear shaky. Directly applying image stitching methods for shaking videos often suffers from strong spatial and temporal artifacts. To solve this problem, we propose a unified framework in...
This paper presents a method to stabilize shaky stereoscopic videos captured by hand-held devices. Directly applying traditional monocular video stabilization techniques to two views independently is problematic as it often brings undesirable vertical disparities and produces inaccurate horizontal disparities, which violate original stereoscopic disparity constraints, leading to erroneous depth perception...
This paper presents a dynamic resolution asynchronous event-based dynamic vision sensor(DVS) that benifits from low power consumption. Pixel core in this kind of sensor can be divided into two parts: photoreceptor and motion detection circuit. In this design, power is kept low by turning off some pixels' motion detection circuits when there is no event nearby. The full resolution of this sensor is...
We prove a complexity dichotomy for complex-weighted Holant problems with an arbitrary set of symmetric constraint functions on Boolean variables. In the study of counting complexity, such as #CSP, there are problems which are #P-hard over general graphs but P-time solvable over planar graphs. A recurring theme has been that a holographic reduction [Val08] to FKT precisely captures these problems...
We propose a novel 3D graphics architecture based on scan-line rendering. Scan-line rendering does not require a frame buffer and depth buffer, therefore it can reduce memory usage as compared with the widely used frame buffer architecture. On the other hand, scan-line rendering requires a huge volume of memory access. Some algorithms to solve this problem were proposed in the field of 2D graphics,...
We show that an effective version of Siegel's Theorem on finiteness of integer solutions for a specific algebraic curve and an application of elementary Galois theory are key ingredients in a complexity classification of some Holant problems. These Holant problems, denoted by Holant(f), are defined by a symmetric ternary function f that is invariant under any permutation of the k >= 3 domain elements...
In mobile Ad Hoc networks the established path is often disconnected because of nodes mobility, which results in communication discontinuity and adverse effects on real-time services, and a new multi-path routing algorithm based on link lifetime is proposed. This algorithm tries to find more than on stable and independent path to transport packets based on link lifetime. Simulations prove that can...
This paper proposes a new per-class bandwidth constraint algorithm, namely multipath selection algorithm (MSA), for a DiffServ-aware traffic engineering (DiffServ-TE). The MSA is achieved in three steps. First, the source uses the MSA to find multiple label switch paths (LSPs) from the source to the destination for a class type (CT). Second, the source uses the available bandwidth of the CT on all...
Corrugated horns are usually used as the feeds of reflectors or lens antennas. In this article, we study the large aperture corrugated conical horns. Then, we design a kind of corrugated conical horn which has sine profile. This horn has shorter length when the size of aperture hold the line. At the same time, we ensure the performance of the horn. This support the forward designing and machining...
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