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This paper proposes a new flight control method of UAV (Unmanned Aerial Vehicle) using LED panels and video camera on UAV. In this method, the LED panel displays some patterns related to commands for UAV, and it also displays a blinking pattern for panel detection. From images of video camera on UAV, first, a panel detection process is performed. In this process, the frequency of green blinking is...
The goal of our study is to provide wheelchair users with a novel device that allows them to easily see their calorie consumption while exercising to prevent metabolic syndrome. We previously proposed a system that measures wheelchair movement using a rotary encoder and accelerometer, and counted the number of wheelchair strokes for three levels of acceleration intensity. This paper presents the experimental...
This paper proposes a 3D shape and color estimation method based on the photometric stereo method that uses images taken from multiple linear light sources. The proposed method can estimate partial object shape accurately. Hence we estimate multiple object shapes with different light source positions, extract partial object shapes and integrate them. In addition we also use the binocular stereo method...
The goal of our study was to provide wheelchair users with a novel device that allows them to easily determine the level of activity necessary to prevent metabolic syndrome. Previously, we proposed a system that measured wheelchair movements using a rotary encoder and accelerometer, and counted the number of wheelchair strokes for three levels of acceleration intensity. This paper presents the experimental...
This study discusses a communication system using a LED panel and a video camera for an UAV control. The LED panel is used to display various patterns, such as QR codes, micro QR codes and AR markers. And, images of LED panel taken by the video camera on the UAV are used to extract some information to UAV. 3D position and pose of the camera from the LED panel are also estimated. In this paper, we...
The goal of our study is to provide wheelchair users with the novel device that can easily acquire the amount of activity for prevention of metabolic syndrome. In this paper, we proposed a small device which can count the number of the wheelchair strokes when wheelchair users drive their manual wheelchair. The device counts the number of the wheelchair strokes by detecting the peak of the forward...
This study proposes an information transmission device constructed by a LED panel and a video camera. The LED panel displays various patterns of AR markers and micro QR codes. Then, from images taken by the video camera, some information and 3D position and pose of the camera from the LED panel are extracted. We are planning to apply this system for a communication between a radio-controlled helicopter...
The houses of individuals with SCI (spinal cord injury) are remodeled according to their wheelchair operation ability, the method of body transfer, and their use of welfare equipment before they return from the hospital. In our rehabilitation center, house remodeling is demonstrated for individuals and family members using three-dimensional computer graphic images before the house construction is...
The decrease in the amount of physical activity in daily life can cause lifestyle diseases and metabolic syndrome for wheelchair users. Some able-bodied persons use step counters during walking to detect the amount of activity during a day. However, it is difficult for wheelchair users to get the amount of the activity during a day spent in a wheelchair. The purpose of this study is to propose a system...
This study proposes a method to recover 3D shape, color and specular reflections of an object from images taken by an image scanner which has multiple illuminations. The proposed method is based on the photometric stereo method and it is constructed by several processes. First is the initial shape estimation using four images, and then the color and specular component estimation are performed sequentially...
The purpose of this study is to make clear the side-approach transfer ability of spinal cord injury (SCI) patients. We evaluate the SCI patient’s skill and muscle power for the transfer motion by imaging patient’s transfer motion and measuring the floor reaction forces. In this study, the measurement of the side-approach transfer from the wheelchair to the platform was carried...
In this paper, we discuss the motion capture system which acquire 3D human motion data using camera images. In this system, in order to detect feature points of human’s parts, we use a few color markers and silhouette images of human to be able to move human without restriction. And, we estimate 3D positions of feature points by the stereo method using two cameras. Moreover, when the feature...
It is necessary for medical staff members to evaluate the computer input ability of patients with spinal cord injury (SCI) during the patients' rehabilitation. In this paper, we describe a system for measuring and evaluating the computer input ability of SCI patients. We measured the position locus of the mouse cursor when a patient operates a computer using a ball mouse. After this measurement, we...
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