Aiming at the SLAM problem faced by humanoid robot path planning in unknown environment. firstly. based on the analysis of feature region location and information description in the region. a feature extraction algorithm based on LPP has been researched to reduce the computational complexity of SLAM and the sensitivity to wrong data association. https://www.diegojavierfares.com/quick-sale-Bettanin-Brilhus-Broom-Multiuso-top-mega/