Image processing apparatus, method and program

摘要

An image analysis unit analyzes an image on which AE processing has been performed and obtains a coefficient for obtaining a gradient of a compression table for compressing a dynamic range of the image. A compression table creation unit creates a compression table. A correction amount calculation unit judges whether the gradient of the compression table is larger than a predetermined threshold value. If the judgment is YES, loss of fine texture in the image by dynamic range compression is significant. Therefore, the correction amount calculation unit calculates a correction amount by using an unsharp image of the image. If the judgment is NO, loss of fine texture in the image is insignificant, the correction amount calculation unit calculates the correction amount by using the image. A compression processing unit compresses the dynamic range of the image by the correction amount and obtains a processed image data set.