We present a camera‐based human body parameters measurement approach and develop a human postural assessment system. The approach combines the conventional contact measurement method and the non‐contact measurement method to overcome some shortcomings in terms of time, expense, and professionalism in early methods. The entire measurement system consists of a computer, a high‐definition camera, and the sticky points that are applied to the participant's body before the measurement. The camera captures the triple view image of human body. Then the human body outline and the joint points of the human skeleton ere extracted to locate the bone feature points. Finally, measurements and extractions of the human parameters are made. Experimental results demonstrate that the global postural assessment system provides quantitative guidance for human postural evaluation, and it completely changing how human postural is evaluated. The postural assessment system is significance for early diagnosis of diseases and medical rehabilitation treatment.This article is protected by copyright. All rights reserved.