BPQA: A Blind Point Cloud Quality Assessment Method

A point cloud quality assessment method, called the Blind Point Cloud Quality Assessment (BPQA), is proposed to evaluate the perceptual quality of point clouds compressed by various point cloud codecs. BPQA consists of three modules. First, it selects points of various salience degrees based on the color information. Second, it projects the local neighborhood of selected points along one of the three orthogonal axes to yield a five-channel map (namely, RGB, depth, and pairwise-point-distance-mean channels). Third, it extracts features using the channel-wise Saab transform (c/w Saab) and the relevant feature test (RFT) and trains an XGBoost regressor to predict the Mean Opinion Score (MOS). BPQA offers competitive performance in no-reference quality assessment tasks of the ICIP 2023 PCVQA Chanllenge.