Abstract: A method includes receiving from a camera a 2D front-view digital image (FDI) and side-view digital image (SDI) of a human body; receiving one or more camera parameters (CPs); executing a front depth-estimation model (DEM) generated through pre-training a first machine-learning model (MLM) to convert the FDI and SDI into a front depth map (DM) and side DM, respectively; executing a rear DEM generated through pre-training a second MLM to estimate a rear DM based on the FDI, SDI, and front and side DMs; combining the front and rear DMs to generate a 3D model; executing a front key-point (FKP) estimation model generated through pre-training a third MLM to estimate one or more FKPs; and extracting a body measurement based on the 3D model and FKPs, the first and second MLMs each including a respective encoder and decoder, each respective decoder configured to be executed based on the CPs.