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GPS is very popular for locating the unmanned vehicles. However, it cannot solve all the problems about location. As crossroad is very important for unmanned vehicles, it is necessary for unmanned vehicles to recognize the crossroad and to load some other recognition tasks (such as traffic light recognition and traffic sign recognition) at the same time. The precision of GPS can hardly tell us if...
We address the problem of automated face recognition on a social network using a loopy belief propagation framework. The proposed approach propagates the identities of faces in photos across social graphs. We characterize performance in terms of structural properties of a social network. This is accomplished by conducting extensive simulations on synthetic networks. We propose a distance metric defined...
Multiple light scattering, leading to blurring or loss of spatial resolution in dense fog regions, is not considered by previous imaging models. To better understand weather effects on vision and improve present defogging methods, this paper describes a new physics-based model, which can explain multiple scattering effects as well as the airlight and attenuation of reflections under fog conditions...
In vision navigation tasks, lane marks on roads are very important vision cues. Usually, these lane marks can be detected using Hough transform or vanishing point detection. However such methods always need great computing power, and they are difficult to be realized on board processors in real-time. In this paper, a vanishing point like reference point is set as a support vector. The points on the...
All dies are required to keep consistent angles in LED chip sorting. Generally, all chips are adhesive to wafer tape. When each die rotates, all other dies rotate and their positions change. To solve this problem, an on-line angle correction method is put forward. Techniques including reverse computing angle offset and moving displacement for die angle correction are discussed in detail. While, experimental...
All dies are required to keep consistent angles in LED chip sorting. Usually, rectification orient real-time vision is used for this but it may decrease production efficiency greatly, because one correction may need several adjustments. Considering that all dies to be sorted are adhesive to wafer tape, each is rotated, locations of all other dies change. It is a problem for following positioning and...
Images captured in foggy scenes suffer from degraded contrast and colors. It's imperative to overcome the weather effects and make outdoor vision systems more reliable. This paper describes a fast algorithm to enhance the visibility of foggy scenes with solely a single image. Firstly, the thickness of the fog is estimated with a Gaussian filter and an intensity image, which is composed of the foggy...
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