System and method for providing augmented reality interactions over printed media

A computer implemented method for image recognition, comprising:

• Receiving a candidate image for comparison against a plurality of pre-stored images;
• Applying a first recognition algorithm whose output includes a plurality of potential matches for the candidate image, the potential matches including images showing an optical similarity to the candidate image;
• Applying a second recognition algorithm for detecting, from the plurality of potential matches, a single match for the candidate image, the second recognition algorithm being adapted to detect a common object in the candidate image and one of the potential matches;
• wherein a distortion is applied to the candidate image before comparing it to the pre-stored images, to compensate for natural curvature of flexible medium aimed at, wherein the distortion pattern is inverted using interpolation image distortion where nodes of an interpolation net are accumulation points of a Hough transform.

A computer implemented method for image recognition, comprising:

• Receiving a candidate image for comparison against a plurality of pre-stored images;
• Applying a first recognition algorithm whose output includes a plurality of potential matches for the candidate image, the potential matches including images showing an optical similarity to the candidate image;
• Applying a second recognition algorithm for detecting, from the plurality of potential matches, a single match for the candidate image, the second algorithm being adapted to detect a common text in the candidate image and one of the potential matches;
• wherein the second recognition algorithm uses an aspect of separation based recognition, the second recognition algorithm being adapted to select the single match for the candidate image based on a presence of similar separations between words of a given paragraph in the candidate image and in a PDL of the potential matches, and
• wherein analyzing a separation between words is done on a line by line basis, looking downward of a current line and its word spaces to examine relative position of nearest word spacing on another line below the current line.

A computer implemented method for image recognition, comprising:

• Receiving a candidate image for comparison against a plurality of pre-stored images;
• Applying a first recognition algorithm whose output includes a plurality of potential matches for the candidate image, the potential matches including images showing an optical similarity to the candidate image;
• Applying a second recognition algorithm for detecting, from the plurality of potential matches, a single match for the candidate image, the second algorithm being adapted to detect a common object in the candidate image and one of the potential matches;
• wherein the second recognition algorithm analyzes a relative length of an alternance of words like and space like patterns on a line or a group of lines, such alternance defining a unique pattern that is searched for in the potential matches to select the single match.

A computer implemented method for image recognition, comprising:

• Receiving a candidate image for comparison against a plurality of pre-stored images;
• Applying a first recognition algorithm whose output includes a plurality of potential matches for the candidate image, the potential matches including images showing an optical similarity to the candidate image;
• Applying a second recognition algorithm for detecting, from the plurality of potential matches, a single match for the candidate image, the second algorithm being adapted to detect a common object in the candidate image and one of the potential matches;
• wherein each candidate image that is overexposed is diagnosed using a frequency analysis in a low saturation area to determine an ellipsoidal shape of gradient of saturation where a frequency analysis has a predominance of low frequencies which allows to adjust parameters that fit a best ellipsoid matching theses low frequencies and where this ellipsoid allows to determine a tonal correction in this area.