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The technique of Projection Mapping, which is useful for merging real-world geometry with an augmented appearance, is a promising core technology for augmented reality (AR). In recent years, dynamically changing environments, mainly a consequence of the growing demand for interactive user experiences, have contributed to a new style of AR applications. However, performance levels of current systems...
Dynamic projection mapping for moving objects has attracted much attention in recent years. However, conventional approaches have faced some issues, such as the target objects being limited to rigid objects, and the limited moving speed of the targets. In this paper, we focus on dynamic projection mapping onto rapidly deforming non-rigid surfaces with a speed sufficiently high that a human does not...
Automatic traffic light detection (TLD) plays an important role for driver-assistance system and autonomous vehicles. State-of-the-art TLD systems showed remarkable results by exploring visual information from static frames. However, traffic lights from different countries, regions, and manufactures are always visually distinct. The existing large intra-class variance makes the pre-trained detectors...
High-speed vision technology in which not just image capturing and recording but also image processing are executed simultaneously at high frame rates, exceeding video rates (30 Hz), has recently been considered an important technology for various applications, such as robotics, and man-machine interfaces. However, the image processing performed in conventional high-speed vision systems is mainly...
In this paper, we propose a new book digitization system that can obtain high-resolution document images while flipping the pages automatically. The distinctive feature of our system is the adaptive capturing that has a crucial role in achieving high speed and high resolution. This adaptive capturing requires observing the state of the flipped pages at high speed and with high accuracy. In order to...
Mobile devices are too small to operate freely using their input surfaces. To solve this problem, non-contact and natural gesture interfaces have been the focus of recent research. In this paper we propose a method of estimating multi-finger position and pose for operating such devices at high speed using a single camera. Our method achieves the finger tracking based on the appearance and shape deformation...
There is a growing importance of the in-air hand operation for the input devices. In order to introduce such in-air operation, we require an image sensing technology that enables 3D position detection of the user's hand in wide range. In this paper, as a practical application system, we focus on the Zooming Touch Panel [1] that connects the touch-panel and in-air operations seamlessly. In order to...
We propose a new method of indoor-scene stereo vision that uses probabilistic prior knowledge of indoor scenes in order to exploit the global structure of artificial objects. In our method, we assume three properties of the global structure — planarity, connectivity, and parallelism/orthogonality — and we formulate them in the framework of maximum a posteriori (MAP) estimation. To enable robust estimation,...
There is a strong demand for a method of acquiring a non-rigid shape under deformation with high accuracy and high resolution. However, this is difficult to achieve because of performance limitations in measurement hardware. In this paper, we propose a model based method for estimating non-rigid deformation of a developable surface. The model is based on geometric characteristics of the surface, which...
In this paper, we propose a wide-range image sensing method using a camera thrown up into the air. By using camera thrown up in this way, we can get images that are otherwise difficult to obtain, such as those taken from overhead. As an example of wide-range image sensing, we integrated video images captured by a thrown-up camera using an image mosaicing technique. When rotation about the optical...
Recognition of dynamic scenes based on shape information could be useful for various applications. In this study, we aimed at improving the resolution of three-dimensional (3D) data obtained from moving targets. We present a simple clean and robust method that jointly estimates motion parameters and a high-resolution 3D shape. Experimental results are provided to illustrate the performance of the...
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