A Method of Analyzing a Shape with Potential Symmetry and Its Application to Detecting Spinal Deformity.
01/1995; pp.465-470 In proceeding of: Computer Vision, Virtual Reality and Robotics in Medicine, First International Conference, CVRMed'95, Nice, France, April 3-6, 1995, Proceedings
[show abstract] [hide abstract]
ABSTRACT: Spinal deformity is a serious disease, mainly suffered by teenagers during their growth stage. In this paper, we propose a new technique for an automatic judgment method of spinal deformity from moire topographic images. Normally the moire stripes show a symmetric pattern, as a human subject is almost symmetric. According to the progress of the deformity of a spine, asymmetry becomes larger. Medical doctors check the asymmetric moire patter from the moire topographic image on visual screening. Nu-merical representation of the degree of asymmetry is therefore useful in evaluating the deformity. In this study, displacement of local centroids and difference of gray values are evaluated statistically between the left-hand side and the right-hand side regions of the moire images with respect to the extracted middle line. The degree of the displacement and differences of gray values are learned by using a neural network employing the back propagation algorithm and satisfactory classification rates are obtained. An experiment was performed employing 1200 real moire images and 90.3% of the images were classified correctly.
Data provided are for informational purposes only. Although carefully collected, accuracy cannot be guaranteed. The impact factor represents a rough estimation of the journal's impact factor and does not reflect the actual current impact factor. Publisher conditions are provided by RoMEO. Differing provisions from the publisher's actual policy or licence agreement may be applicable.