| 摘要 |
A distortion of image data is corrected by performing a coordinate transformation of the image data by using <maths id="MATH-US-00001" num="00001"> <math overflow="scroll"> <mrow> <mo>{</mo> <mtable> <mtr> <mtd> <mrow> <mi>X</mi> <mo>=</mo> <mrow> <mi>x</mi> <mo>+</mo> <mrow> <mi>f</mi> <mo></mo> <mrow> <mo>(</mo> <mrow> <mrow> <mi>x</mi> <mo>-</mo> <msub> <mi>x</mi> <mn>0</mn> </msub> </mrow> <mo>,</mo> <mrow> <mi>y</mi> <mo>-</mo> <msub> <mi>y</mi> <mn>0</mn> </msub> </mrow> </mrow> <mo>)</mo> </mrow> </mrow> </mrow> </mrow> </mtd> </mtr> <mtr> <mtd> <mrow> <mi>Y</mi> <mo>=</mo> <mrow> <mi>y</mi> <mo>+</mo> <mrow> <mi>g</mi> <mo></mo> <mrow> <mo>(</mo> <mrow> <mrow> <mi>x</mi> <mo>-</mo> <msub> <mi>x</mi> <mn>0</mn> </msub> </mrow> <mo>,</mo> <mrow> <mi>y</mi> <mo>-</mo> <msub> <mi>y</mi> <mn>0</mn> </msub> </mrow> </mrow> <mo>)</mo> </mrow> </mrow> </mrow> </mrow> </mtd> </mtr> </mtable> </mrow> </math> </maths> where X and Y represent coordinates of a transformation source which is the image data after the correction of the distortion, x and y represent coordinates of a transformation destination which is the image data having the distortion, x0 and y0 are offset values in x direction and y direction, respectively, and f and g are correction functions.
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