Shading correction method for shuttle scanning device
AssigneeSamsung Electronics Co., Ltd.
InventorHyuk-Jae Lee
Life of this patent
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Abstract
A method of calculating a precise scanning reference value for a shading correction by dividing a scanning area under a reciprocating scanner into a practical scanning area and a shading correction scanning area. This method includes the steps of: entering a shading correction mode; moving the scan head to the shading correction scanning area; reading a plural number of scanning values in moving within the shading correction scanning area; and calculating the scanning reference value by using said plural number of scanning values.
Claims19
A method of performing a shading correction for a reciprocating scanner, comprising the steps of:
- entering a shading correction mode;
- moving a scan head to a reference area having a plurality of pixel positions;
- when said reference area is reached by said scan head, obtaining a plurality of scan values from each of said pixel positions while moving the scan head across the reference area;
- and
- determining a value of a shading correction factor from said scan values.
A method of performing a shading correction for a reciprocating scanner, comprising the steps of:
- entering a shading correction mode;
- moving a scan head to a reference area having a plurality of pixel positions;
- when said reference area is reached by said scan head, obtaining a plurality of scan values from each of said pixel positions while moving the scan head across the reference area without stopping in the reference area;
- and
- determining a value of a shading correction factor from said scan values.
A shading correction apparatus, comprising:
- a reference panel including an area having a plurality of pixel positions;
- a scan head disposed to move to said area of said reference panel, and obtain a plurality of scan values from each of said pixel positions while moving over said reference panel;
- and
- a controller coupled to said scan head to generate a value of a shading correction factor in accordance with said scan values for each of said pixel positions.
Dependencies are inferred from the claim text.