The invention belongs to the field of infusion monitoring, and particularly relates to a target container liquid level
visual detection and early warning method and
system.The method comprises the steps that an enhanced image and a three-dimensional
point cloud sequence are obtained by collecting a target container deformation image, a three-dimensional
point cloud and flexibility attribute data and conducting polarized light enhancement preprocessing; obtaining a deformation feature space and a deformation liquid
level line feature sequence of the target container at different time points by means of a spatial-temporal
feature extraction model, and constructing a three-dimensional dynamic deformation model in combination with three-
dimensional modeling, finite
element analysis and a NeoHookean model; based on the model, an undeformed
standard model and a
simulation algorithm, obtaining a correlation mapping function of the liquid
level line deviation and a deformation
characteristic space; the correlation mapping function is fed back to the spatial-temporal
feature extraction model, the height and coordinates of the corrected deformation-free liquid
level line are obtained in combination with the real-time target container deformation image, real-time monitoring and early warning in the infusion process are finally achieved in combination with a preset early warning rule, and the accuracy and reliability of infusion monitoring are improved.