ADJUSTING PERSPECTIVE DISTORTION OF AN IMAGE

摘要

The present disclosure concerns a method and system to accurately remove a three-dimensional distortion in an image of a document and convert the image into an accurate two dimensional image. A method for accurately deducing an image of a document to a precise document boundary is also disclosed. A portable computing device may employ the disclosed method and system. The methods involve a marker embedded in a document which provides three-dimensional positional information of a recording device with reference to the marker continuously in real time.

主权项

1. A method of correcting a three-dimensional distortion in an image of a document comprising the steps of:
embedding a marker in the document, the marker including a predetermined marker orientation; capturing a full image that includes the image of the document; identifying a marker orientation of the marker within the image of the document; comparing the marker orientation of the marker within the image of the document to the predetermined marker orientation; determining a transformation to remove the three-dimensional distortion in the image of the document; and applying the transformation to the captured full image.