| 摘要 |
PROBLEM TO BE SOLVED: To reduce unevenness caused in summing average processing and smoothing associated with shading correction. SOLUTION: In an image processing device, the unevenness caused due to the processing associated with the shading correction whose key object is to extract the unevenness component referring to a uniform light source is reduced by a method where a correction value is extracted using a reference surface of the same uniform light source. The method includes the steps of: extracting a deflection rate to each pixel corresponding to the maximum value and minimum value of the unevenness level caused in a signal loaded by multiplying the shading correction value; and applying a combined correction value calculated by allowing the correction value of the shading correction to be multiplied by the deflection rate to luminance correction of the spherical aberration of a lens caused by carrying out an operation of signals outputted from a camera when carrying out real measurement thereof. COPYRIGHT: (C)2009,JPO&INPIT |
