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Recently, several method have been proposed to capture 3D shapes of a moving object at a high frame rate. One of promising approach to reconstruct a 3D shape is a projector-camera system that projects structured light pattern. One of the problem of this approach is that it has difficulty to obtain texture simultaneously because the texture is interfered by the illumination from the projector. The...
Nowadays, digital image processing is the most common form of image processing. Digital image processing makes it possible to enhance image features of interest while attenuating detail irrelevant to a given application, and then extract useful information about the scene from the enhanced image. For instance, digital cameras usually include dedicated digital image processing chips in order to improve...
The objective of camera calibration is to establish the relationship between 3D world coordinates and their corresponding 2D image coordinates. There are various kinds of control points used in the calibration procedure. However, many of them are too sensitive to the thresholding error. Circular control points do not have this problem but they need to be corrected the distortion caused by the asymmetric...
An intensity modulated fiber-optic position sensor, based on a fiber to bundle coupling and a readout system using a CMOS image camera together with fast routines for position extraction and calibration, is experimentally demonstrated. Further, a simulation of the complete sensor system setup is made, and possible sources of error are analyzed experimentally. Our analysis indicates the theoretical...
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