Abstract
The intent of study is to establish a criterion for the experimental setup of rasterstereography, one that is more efficient, simple, accurate and precise to examine and analyse the curvature of the object or the subject. Firstly, the setup is needed to be calibrated and for this purpose we considered a reference plane, eleven cylinders of different diameter ranging from 30-119mm were used for calibration of curvature maps of cylinders and cylindrical objects through the regression line. Further this model was tested on subjects and for that we reckoned cylindrical body parts of boys and a total of 30 college students were involved as subjects in this process. The body parts to be measured had curvature like cylinders of different diameters ranging from 42-120mm. The distortion of raster grid was observed, quantified and recorded with the help of different tools and results were established. The regression line was obtained between the measured (x) and computed (y). The standard error of the cylindrical object was 0..04 and that of cylindrical body parts of subjects was 0.0407. This technique was validated through the coefficient of correlation for objects and subjects which was found to be 0.99982 and 0.999141 respectively. Accuracy and Precision were also calculated for this model, which were 99.60% accurate and 99.49% precise. Curvature maps were found more than 99%. This technique is inexpensive, reliable, reproducible and may be installed easily in hospitals to examine appraise body shape, composition and deformities of young men.
Highlights
Ihumanity to develop more efficient new methods to determine the surface type and shapes
There were different types of methods used for range images, one segmentation method for detecting various surfaces yields three types of surfaces, whereas other methods consider eight basic types of surfaces based on signs of mean and Gaussian curvatures
Calibration and Validation of an Experimental Setup for the Measurement of the Cylindrical Body Shapes and Curvatures of the Objects and Subjects through the Techniques of Rasterstereography methods can be applied to many fields, including medical sciences
Summary
Ihumanity to develop more efficient new methods to determine the surface type and shapes. Rasterstereography is an inexpensive, simple, noninvasive, noncontact optical-imaging technique, which provides three-dimensional curvature maps of the object or the subject under study It is being used in some countries for the diagnosis, the documentation, the follow-up and the quantification of different types of body shapes deformities, when the raster grid projected on the body. Accuracy and precision of this technique is relatively better than the other techniques and that is why it is more reliable This technique measures and examines the minimum abnormalities on the surface of the subjects which can be ignored by physicians and doctors during examinations and can timely identify any structural anomalies and by doing serial measurements by this technique appropriate treatment can be commenced and so adverse outcomes can be avoided and thereby making this technique efficient and effective. For the accuracy of the results we need to calibrate and validate it by using some statistical tools
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