Systems and methods for removing grid lines from digital graph images

A system comprising:

• a display configured to illustrate a first digital image, the first digital image including plural pixels comprising data lines plotted against grid lines;
• and
• a control unit including one or more processors configured to generate a first spectrum graph of a Fourier transform of the first digital image, the control unit configured to create a second digital image by removing one or more of the plural pixels from the first digital image, the one or more of the plural pixels removed from the first digital image including at least some of the data lines and at least some grid lines,
• the control unit configured to generate a second spectrum graph of a Fourier transform of the second digital image, and create a filter based on the second spectrum graph of the Fourier transform of the second digital image, the second spectrum graph including plural pixels of data having different characteristics, the filter identifying at least first and second subsets of the plural pixels, wherein the data of the plural pixels of the first subset has a first set of characteristics, and the data of the plural pixels of the second subset having a second set of characteristics, the filter identifying the first subset of the plural pixels as a first classification, and the filter identifying the second subset of the plural pixels as a second classification,
• the control unit configured to apply the filter to the first spectrum graph of the Fourier transform of the first digital image to create a third spectrum graph, and
• the control unit configured to perform an inverse Fourier transform on the third spectrum graph to convert the third spectrum graph to a third digital image, the third digital image including the data lines of the first digital image, wherein at least some of the grid lines of the first digital image are removed from the third digital image.

A non-transitory computer-readable storage medium comprising executable instructions that, in response to execution, cause one or more processors to perform the operations comprising:

• generating a first spectrum graph of a Fourier transform of a first digital image, the first digital image including plural pixels comprising data lines plotted against grid lines;
• removing one or more of the plural pixels from the first digital image to create a second digital image, the one or more pixels removed from the first digital image including at least some of the data lines and at least some of the grid lines extending within the removed pixels;
• generating a second spectrum graph of a Fourier transform of the second digital image;
• creating a filter based on the second spectrum graph of the Fourier transform of the second digital image, the second spectrum graph including plural pixels of data having different characteristics, the filter identifying at least first and second subsets of the plural pixels, wherein the data of the plural pixels of the first subset has a first set of characteristics, and the data of the plural pixels of the second subset having a second set of characteristics, the filter identifying the first subset of the plural pixels as a first classification, and the filter identifying the second subset of the plural pixels as a second classification;
• applying the filter to the first spectrum graph of the Fourier transform of the first digital image to create a third spectrum graph;
• and
• performing an inverse Fourier transform on the third spectrum graph to convert the third spectrum graph to a third digital image, the third digital image including the data lines of the first digital image, wherein at least some of the grid lines of the first digital image are removed from the third digital image.