Image processing apparatus, image processing method and recording medium

摘要

An image processing apparatus, including a first obtaining unit which obtains image data; a first generation unit which generates a plurality of levels of pixel values that are respectively smoothed in a plurality of levels of resolutions; a correction unit which corrects the pixel value of the obtained image data for each of the levels; and a control unit which controls so as to form image data in which the pixel value of the obtained image data is enhanced by utilizing a high frequency component in each of the levels of the image data having the pixel value corrected by the correction unit, the high frequency component corresponding to each of the levels of the resolutions.

主权项

1. An image processing apparatus, comprising:
a first obtaining unit which obtains image data with an expanded dynamic range which is obtained by performing pixel addition on images of nearly the same composition in which luminance is altered in a plurality of luminance levels; a first generation unit which generates a plurality of levels of pixel values that are respectively smoothed in a plurality of levels of resolutions by repeatedly performing smoothing processing and resolution conversion processing on a pixel value of the image data obtained by the first obtaining unit; a correction unit which corrects the pixel value of the obtained image data for each of the levels on the basis of a difference between the pixel value of the image data obtained by the first obtaining unit and the pixel value in each of the levels generated by the first generation unit; and a control unit which controls so as to form image data in which the pixel value of the obtained image data is enhanced by utilizing a high frequency component in each of the levels of the image data having the pixel value corrected by the correction unit, the high frequency component corresponding to each of the levels of the resolutions.