Signature match system and method

A tangible, non-transitory, machine-readable medium of a signature matching system storing instructions that when executed by one or more processors effectuate operations comprising:

• extracting an electronic image of a signature from an electronic document;
• responsive to extracting the electronic image of the signature from the electronic document, pre-processing the electronic image, the pre-processing comprising:
• receiving a black and white electronic image of the signature, or converting a color electronic image of the signature to a black and white electronic image of the signature;
• converting the black and white electronic image of the signature into a two dimensional binary matrix that stores a “1” in the matrix for a black pixel in the black and white electronic image and a “0” in the matrix for a white pixel in the black and white electronic image;
• and trimming the two dimensional binary matrix such that a left most “1” in the matrix is positioned on a left edge of the trimmed matrix, an upper most “1” in the matrix is positioned at an upper edge of the trimmed matrix, a right most “1” in the matrix is positioned at a right edge of the trimmed matrix, and a lower most “1” in the matrix is positioned at a lower edge of the trimmed matrix;
• determining, using the extracted electronic image of the signature, values of slopes of lines that bound the signature in the electronic image, wherein determining the values of the slopes of the lines comprises assigning, with the one or more processors of the signature matching system, Cartesian co-ordinates to the 1's and 0's in the trimmed matrix and determining values of four slopes of four lines that bound the signature using the Cartesian co-ordinates, the four lines comprising a line between the left most “1” and the upper most “1”, a line between the upper most “1” and the right most “1”, a line between the right most “1” and the lower most “1”, and a line between the lower most “1” and the left most “1” of the trimmed matrix;
• comparing the values of the slopes of the lines that bound the signature in the electronic image to values of slopes of corresponding lines that bound other signatures stored in a signature database of the signature matching system;
• and
• determining whether the signature matches one or more of the other signatures based on the values of the slopes of the lines that bound the signature in the electronic image matching values of corresponding slopes of lines that bound one or more of the other signatures to within predetermined tolerances for the slopes.

A system for matching signatures, the system comprising one or more processors configured by machine-readable instructions to:

• extract an electronic image of a signature from an electronic document;
• responsive to extracting the electronic image of the signature from the electronic document, pre-process the electronic image, the pre-processing comprising:
• receiving a black and white electronic image of the signature, or converting a color electronic image of the signature to a black and white electronic image of the signature;
• converting the black and white electronic image of the signature into a two dimensional binary matrix that stores a “1” in the matrix for a black pixel in the black and white electronic image and a “0” in the matrix for a white pixel in the black and white electronic image;
• and
• trimming the two dimensional binary matrix such that a left most “1” in the matrix is positioned on a left edge of the trimmed matrix, an upper most “1” in the matrix is positioned at an upper edge of the trimmed matrix, a right most “1” in the matrix is positioned at a right edge of the trimmed matrix, and a lower most “1” in the matrix is positioned at a lower edge of the trimmed matrix;
• determine, using the extracted electronic image of the signature, values of slopes of lines that bound the signature in the electronic image, wherein determining the values of the slopes of the lines comprises assigning Cartesian co-ordinates to the 1's and 0's in the trimmed matrix and determining values of four slopes of four lines that bound the signature using the Cartesian co-ordinates, the four lines comprising a line between the left most “1” and the upper most “1”, a line between the upper most “1” and the right most “1”, a line between the right most “1” and the lower most “1”, and a line between the lower most “1” and the left most “1” of the trimmed matrix;
• compare the values of the slopes of the lines that bound the signature in the electronic image to values of slopes of corresponding lines that bound other signatures stored in a signature database of the signature matching system;
• and
• determine whether the signature matches one or more of the other signatures based on the values of the slopes of the lines that bound the signature in the electronic image matching values of corresponding slopes of lines that bound one or more of the other signatures to within predetermined tolerances for the slopes.