1. A system for flow-based hemodynamic monitoring, comprising: a display device configured to visually display a physiological curve of a patient, the physiological curve comprising either a pulse pressure curve or a plethysmographic curve; a capture device comprising: a camera configured to capture the visual display of the physiological curve of the patient; capture storage media containing a capture set of instructions configured to be executed by the capture device, the capture set of instructions including instructions for enabling a user to manually extract an extracted portion of the visual display containing the physiological curve from the visual display; and a capture communication device configured to transmit and receive image information, the image information including the extracted portion of the visual display portion containing the physiological curve; and an analysis device configured to analyze the extracted portion of the visual display containing the physiological curve transmitted from the capture device to determine one or more hemodynamic parameters.