Patent application number | Description | Published |
20090003601 | ALPHA-MASKED IMAGE MATCHING - A method and system is disclosed for authenticating a physical medium ( | 01-01-2009 |
20090021551 | METHOD OF MEASURING PRINTER CHARACTERISTICS | 01-22-2009 |
20090033957 | CALIBRATION CHART CONFIGURATION SYSTEM | 02-05-2009 |
20090148051 | CORRELATABILITY ANALYSIS FOR SPARSE ALIGNMENT - Disclosed herein is a method of estimating a geometrical relationship between a first image ( | 06-11-2009 |
20090148175 | LIGHT SCATTERING PROPERTY MEASUREMENT METHOD | 06-11-2009 |
20090161945 | Geometric parameter measurement of an imaging device - Disclosed is a method of determining at least one three-dimensional (3D) geometric parameter of an imaging device. A two-dimensional (2D) target image is provided having a plurality of alignment patterns. The target image is imaged with an imaging device to form a captured image. At least one pattern of the captured image is compared with a corresponding pattern of the target image. From the comparison, the geometric parameter of the imaging device is then determined. The alignment patterns include at least one of (i) one or more patterns comprising a 2D scale and rotation invariant basis function, (ii) one or more patterns comprising a 1D scale invariant basis function, and (iii) one or more patterns having a plurality of grey levels and comprising a plurality of superimposed sinusoidal patterns, the plurality of sinusoidal patterns having a plurality of predetermined discrete orientations. Also disclosed is a two-dimensional test chart for use in testing an imaging device, the test chart comprising a plurality of alignment patterns, at least one of said alignment patterns including one of those patterns mentioned above. | 06-25-2009 |
20100149247 | NOZZLE FUNCTIONALITY DETECTION OF INKJET PRINTERS | 06-17-2010 |
20100161637 | METHOD OF PRODUCING PROBABILITIES OF BEING A TEMPLATE SHAPE - A method of identifying a printed page from a scan of the printed page is disclosed. The method comprises the steps of generating a page key of the printed page on the basis of the scan ( | 06-24-2010 |
20110149331 | DYNAMIC PRINTER MODELLING FOR OUTPUT CHECKING - Disclosed is a method ( | 06-23-2011 |