1. A measurement system, comprising: a two-dimensional (2D) image capturing device configured to capture at least one macroscopic 2D image of an object to be measured, wherein the macroscopic 2D image corresponds to all areas of the object; a three-dimensional (3D) information acquisition device configured to acquire microscopic 3D measurement data of the object, wherein the microscopic 3D measurement data corresponds to some of the areas of the object; and an integration and estimation device coupled to the 2D image capturing device and the 3D information acquisition device, configured to receive the macroscopic 2D image and the microscopic 3D measurement data and perform a 2D and 3D image correction on the macroscopic 2D image and the microscopic 3D measurement data to map the microscopic 3D measurement data into the macroscopic 2D image so as to output 3D topography data corresponding to the macroscopic 2D image of the object; and a display device coupled to the integration and estimation device, configured to display one or more measurement results corresponding to the object; wherein the integration and estimation device performs a matching procedure on at least one connection feature between any two positions in the 3D topography data with a plurality of 2D models in a database based on a machine learning mechanism to elect an adapted model, and estimates all of the connection features of the 3D topography data based on at least one fitting function corresponding to the adapted model so as to output at least one estimated feature amount, thereby obtaining the one or more measurement results corresponding to the object.