Postural assessment of arbitrarily taken portrait and profile photographs using ImageJ

Summary A generic methodology to compare and quantify two photographs of body posture, taken under non-standard conditions is proposed in the current work. Suitable digital image processing tools are employed to accentuate the use of imaging technology to assess the posture. ImageJ , a versatile public domain image-processing tool has been employed to carry out the postural analysis. In this paper, we have described two case studies. Postural analysis is carried out on the portrait and profile photographs of the subjects taken arbitrarily, before and after one yoga session to demonstrate the method. Since this study deals with the photographs of the subject, which are arbitrarily taken, emphasis is laid on the normalization aspect of the photographs, after which the postural assessment aspect is discussed.