Background: In China, there are a growing number of young women being diagnosed with breast cancer. Fear of Cancer Recurrence (FCR) has become one of the major psychological concerns reported by young breast cancer patients. Yet, there is a lack of psychological intervention tailored for reducing FCR for Chinese young breast cancer patients.
View Article and Find Full Text PDFLight field camera calibration is much more complicated by the fact that a single point in the 3D scene appears many times in the image plane. Compared to the previous geometrical models of light field camera, which describe the relationship between 3D point in the scene and 4D light field, we proposed an epipolar-space (EPS) based geometrical model in this paper, which determines the relationship between 3D point in the scene and 3-parameter vector in the EPS. Moreover, a close-form solution for the 3D shape measurement based on the geometrical model is accomplished.
View Article and Find Full Text PDFIn three-dimensional profilometry, the primary disadvantage of the monocular system equipped with a projector and a camera is that it is often highly dependent on the projector calibration. The projector calibration errors of the principal point and focal length are analyzed in this paper, and result in measuring the object deviation, including not only the rigid transformation, but also the scale transformation. Unfortunately, the deviation cannot be revealed by reprojection, the normal error analysis method.
View Article and Find Full Text PDFZhongguo Yi Liao Qi Xie Za Zhi
March 2016
The three-dimensional facial wrinkle measurement and quantification have important applications in many fields, which are implemented by an entire system proposed in this paper. The system uses stereo vision method based on structured-light to achieve three-dimensional facial wrinkle measuring, where the system calibration, corresponding points matching and three-dimensional reverse method are implemented. Furthermore, the facial wrinkle is considered as the noise attached on smooth facial profi le so that the facial wrinkle is acquired quantitatively by three-dimensional noise acquisition and morphologic processing method.
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