Abstract: A cam-driven wire mesh-type electrospinning apparatus and a use method therefor are provided. The cam-driven wire mesh-type electrospinning apparatus includes the following components: a high-voltage (HV) power supply unit, a wire mesh-type spinneret, a fiber receiving device, a cam unit, and a solution supply unit. The positions and connection relationships of all the components are as follows: any end of the wire mesh-type spinneret is connected to the HV power supply unit, and the other end of the wire mesh-type spinneret is connected to the cam unit; the wire mesh-type spinneret is installed on the solution supply unit; and the fiber receiving device is positioned right above the wire mesh-type spinneret. The cam-driven wire mesh-type electrospinning apparatus may induce a solution to be uniformly distributed on a wire mesh plane, and adjust the density of jet flow and the distribution position of the jet flow.

Abstract: The present invention relates to a method for correcting a fragmentary or deformed quadrangular image. The method comprises five steps, i.e. detection of an edge point, elimination of an abnormal edge point, straight-line fitting, vertex calculation and image correction. The method for correcting a fragmentary or deformed quadrangular image is applied to a recognition method and a recognition system for papers, such as valuable documents, bills, identity cards, etc., and can rapidly conduct edge detection and tilt correction on images of valuable documents, bills or papers which are fragmentary or deformed.

Abstract: The present invention relates to a method for correcting a fragmentary or deformed quadrangular image. The method comprises five steps, i.e. detection of an edge point, elimination of an abnormal edge point, straight-line fitting, vertex calculation and image correction. The method for correcting a fragmentary or deformed quadrangular image is applied to a recognition method and a recognition system for papers, such as valuable documents, bills, identity cards, etc., and can rapidly conduct edge detection and tilt correction on images of valuable documents, bills or papers which are fragmentary or deformed.