Patent ID: 8035871

Claim:
An image correcting apparatus comprising: representative luminance value calculation circuit for calculating a representative luminance value in a particular image included in an image represented by fed image data; noise amount calculation circuit for calculating a noise amount included in particular image data representing the particular image; target luminance value determination circuit for determining a target luminance value depending on the noise amount calculated by the noise amount calculation circuit; circuit for producing data representing a luminance conversion straight line or a luminance conversion curve such that the represented luminance value calculated by the representative luminance value calculation circuit is corrected to the target luminance value determined by the target luminance value determination circuit; and luminance correction circuit for correcting the luminance of at least the particular image data representing the particular image on the basis of the produced data representing the luminance conversion straight line or the luminance conversion curve; and comprising desired target luminance value input circuit for accepting input of a desired target luminance value, and predicted noise amount calculation circuit for calculating a predicted noise amount that may be included in the particular image data after luminance correction on the basis of the representative luminance value calculated by the representative luminance value calculation circuit, the desired target luminance value inputted by the target luminance value input circuit and the noise amount calculated by the noise amount calculation circuit, the target luminance value determination circuit determining the target luminance value depending on the predicted noise amount calculated by the predicted noise amount calculation circuit.