5. Method according to claim 2 , wherein said step of estimating text baselines comprises a step of clustering eigenpoints into eigenpoint groups, wherein said eigenpoint groups fulfil at least one of the following conditions: a point to point distance between the eigenpoints of the group is below a first distance threshold, a point to line distance between each eigenpoint of the group and a line formed by the eigenpoints of the group is below a second distance threshold, an off horizontal angle of the line formed by the eigenpoints of the group is below a maximum angle, and the eigenpoint group contains a minimum number of eigenpoints; and wherein said text baselines are estimated based on said eigenpoint groups.
5. Method according to claim 2 , wherein said step of estimating text baselines comprises a step of clustering eigenpoints into eigenpoint groups, wherein said eigenpoint groups fulfil at least one of the following conditions: a point to point distance between the eigenpoints of the group is below a first distance threshold, a point to line distance between each eigenpoint of the group and a line formed by the eigenpoints of the group is below a second distance threshold, an off horizontal angle of the line formed by the eigenpoints of the group is below a maximum angle, and the eigenpoint group contains a minimum number of eigenpoints; and wherein said text baselines are estimated based on said eigenpoint groups. 6. Method according to claim 5 , wherein said first distance threshold, said second distance threshold, said maximum angle and said minimum number of eigenpoints are set adaptively based on content of the image.