Background: Scoliosis is the most common type of spinal deformity. A universal and standard method for evaluating scoliosis is Cobb angle measurement, but several studies have shown that there is intra- and inter- observer variation in measuring cobb angle manually.Objective: Develop a computer- assisted system to decrease operator-dependent errors in Cobb angle measurement.Methods: The spinal ...

i ntroduction: we studied and measured facial parameters of 160 students,aged 22-24 years attended at sahand university of technology in northwest of iran. mat erial and methods: in this paper, six linear and six angular facial parameters are measured. these parameters are measured in frontal and profile facial images. the measured values are the mean and standard deviation (sd) of distance bet...

We present a new application of the Nomarski interferometer, to measure the angular position of a parallel laser beam with interfero-metric precision. In our experimental realization we reach a resolution of 3 × 10 −9 rad (6 × 10 −4 ′′) for 1 kHz bandwidth in a 2 × 10 −2 rad (1 •) range. This alternative to the optical lever technique features absolute calibration, independence of the sensitivi...