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Projector-camera systems use computer vision to analyze their surroundings and display feedback directly onto real world objects, as embodied by spatial augmented reality. To be effective, the display must remain aligned even when the target object moves, but the added illumination causes problems for traditional algorithms. Current solutions consider the displayed content as interference and largely...
Disability of visual text reading has a huge impact on the quality of life for visually disabled people.One of the most anticipated devices is a wearable camera capable of finding text regions in natural scenes and translating the text into another representation such as speech or braille.In order to develop such a device,text tracking in video sequences is required as well as text detection.The device...
Disability of visual text reading has a huge impact on the quality of life for visually disabled people. One of the most anticipated devices is a wearable camera capable of finding text regions in natural scenes and translating the text into another representation such as sound or braille. In order to develop such a device, text tracking in video sequences is required as well as text detection. We...
A robust whole-image super-resolution is highly demanded. Whole-image super-resolution requires target-region extraction and motion estimation because an image sequence usually includes multiple targets and a background. A single- motion model is insufficient to represent whole-image motion. In addition, high-accuracy motion estimation is necessary for super-resolution. Simultaneous target-region...
The appearance of a distant object, when viewed through a telephoto-lens, is often deformed nonuniformly by the influence of hot-air optical turbulence. The deformation is unsteady: an image sequence can include nonuniform movement of the object even if a stationary camera is used for a static object. This study proposes a multi-frame super-resolution reconstruction from such an image sequence. The...
When an autonomous robot tries to find text in the surrounding scene using an onboard video camera, some duplicate text images appear in the video frames. To avoid recognizing the same text many times, it is necessary to decrease the number of text candidate regions for recognition. This paper presents a text capturing robot that can look around the environment using an active camera. The text candidate...
This research proposes a framework for reconstructing an image of high dynamic range and high spatial resolution from a sequence of multi sampled images. In the framework, there are two key issues: robust motion estimation and appropriate measurement discarding for reconstruction. An approach to increase the robustness of motion estimation for a multi sampled image sequence is presented. By extracting...
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