System and method for anti-moire imaging
AssigneeInternational Business Machines Corporation
InventorViktors Berstis
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Abstract
A two-dimensional sensor array of non-uniformly spaced sensors for using in digitizing images and avoiding moiré patterns within those images. The non-uniform distribution of the sensors allows the array to avoid having an inherent “frequency” that may interfere with details or harmonics present in the image source, thereby eliminating or reducing the occurrence of moiré patterns and the need for application of image processing to remove moiré patterns.
Claims19
A method of producing a two-dimensional sensor array for imaging, said method comprising the steps of:
- determining a plurality of sensor positions, each position having a spacing in a first axis from a datum point according to a first non-uniform distribution schema, and each position having a spacing in a second axis from said datum point according to a second non-uniform distribution schema;
- providing a two-dimensional array of sensors, each sensor being positioned on said array according to the determined positions in said first and second axes;
- and
- providing a means for sampling said sensors such that a two-dimensional imaging sensor array having non-uniform sensor distribution is realized.
A computer readable medium encoded with software for creating a synthesized uniformly-spaced data set from a dithered data set in an imaging system, said software when executed by a processor causing the processor to perform the steps of:
- receiving a dithered set of data samples;
- and
- performing interpolation to synthesize a set of data samples representing uniformly spaced data samples from said dithered set of data samples.
A digital imaging system comprising:
- a sensor array means, said sensor array having a set of sensors arranged in first axis in a non-uniform manner according to a first schema and in a second axis in a non-uniform manner according to a second schema;
- a sampling means for sampling said sensors;
- and
- a dithered data set creation means for storing data samples from said sampling means.
Dependencies are inferred from the claim text.