Construction site video-based labor, material and machine element analysis and acquisition system and method

The invention discloses a construction site video-based labor, material and machine element analysis and acquisition system and method, and relates to the technical field of construction management. The position of a monitoring point is adjusted by using an optimization algorithm, a quality coefficient is constructed by image parameters of independent frames, and the image quality of a monitoring video is judged according to the quality coefficient; if the image quality is not lower than the expectation, training to obtain an image recognition model used for recognizing the monitoring video, recognizing the monitoring video by the trained image recognition model, generating track data according to recognition results in the recognition data set, generating efficiency degree according to efficiency data obtained through analysis, and if the efficiency degree is lower than the expectation, determining that the monitoring video is abnormal. The construction cost in the construction area is predicted through the