Image processing apparatus, image processing method, and computer recording medium for reducing an amount of noise included in an image

摘要

An image processing apparatus can perform time-sequential weighting addition processing on a moving image constituted by a plurality of frames includes a filter unit configured to obtain an image by performing recursive filter processing on a frame image that precedes a present target frame, which is one of the plurality of frames constituting the moving image, a coefficient acquisition unit configured to acquire a weighting coefficient for the present target frame based on a noise statistic of a differential image between an image of the present target frame and the image obtained by the filter unit, and an addition unit configured to perform addition processing on the moving image constituted by the plurality of frames based on weighting coefficients acquired by the coefficient acquisition unit.

主权项

1. An image processing apparatus that can perform time-sequential weighting addition processing on a moving image constituted by a plurality of frames, the apparatus comprising:
a decomposition unit configured to generate decomposed image data of a plurality of different frequency bands; a filter unit configured to obtain an image by performing recursive filter processing on a preceding frame that precedes a present target frame of the decomposed image data, which is one of the plurality of frames of the decomposed image data constituting the moving image; a coefficient acquisition unit configured to acquire a weighting coefficient for the present target frame of the decomposed image data based on a noise statistic of a differential image data between an image of the present target frame of the decomposed image data and the image of the preceding frame of the decomposed image data obtained by the filter unit in different frequency bands; and a reconstruction unit configured to reconstruct image data of a plurality of different frequency bands, wherein the filter unit adds the present target frame of the decomposed image data with the weighting coefficient acquired by the coefficient acquisition unit to the preceding frame of the decomposed image data.