An embodiment of the present invention is an image correction terminal, user authority authentication performing process for performing user authority authentication; a public record image extraction process in which the image correction terminal cuts out and extracts only the public record image from the scanned electronic file of the public record when user authorization is obtained; a tilt adjustment process in which the image correction terminal adjusts the tilt of the public record image to be horizontal and vertical; The image correction terminal puts a plurality of tilt-adjusted public records images in one image correction folder and displays a plurality of them in the form of thumbnails, and image properties for displaying image properties including DPI, pixels, and file formats for each public record image display process; an image correction setting value input process in which the image correction terminal receives an image correction setting value to be image corrected for a plurality of public records images contained in the image correction folder; an image correction process in which the image correction terminal equally processes the correction of the plurality of public records images contained in the image correction folder based on the input image correction setting value; and an image property checking process in which the image calibration terminal checks the image properties for each of the plurality of public records images contained in the corrected image calibration folder and outputs the test results.
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