The invention discloses an optical
body surface monitoring method and device applied to a radiotherapy room
system and a medium, and relates to the technical field of optical
body surface monitoring, and the method comprises the steps: employing a
checkerboard calibration algorithm, and determining a positioning external parameter and a treatment external parameter; performing positioning monitoring on the user according to the positioning reference
body surface, the body surface positioning real-time
point cloud of the user under multiple visual angles and the positioning external parameters of each camera in the positioning camera group, and moving the treatment
bed until the body surface positioning mark point of the user is aligned with the positioning
isocenter of the radiotherapy
machine; performing radiotherapy image
verification monitoring on the user according to the treatment reference body surface, the first body surface treatment real-time
point cloud and the treatment
external reference, and moving the treatment
bed until the body surface positioning mark point of the user is aligned with the
treatment center of the radiotherapy
machine; and performing
treatment monitoring on the user in the beam treatment process according to the second body surface treatment real-time
point cloud and the treatment
external reference, and determining a treatment real-
time error. The optical body surface monitoring can be completed based on the annular structure radiotherapy
machine by determining the positioning
external reference and the treatment external reference.