Image processing device, image processing method, and image processing program

Abstract

An image processing device (1) for performing image processing for reducing noise in a pickup image has: an image region calculation part (110) for predetermining, upon measuring a first texture quantity indicating a fluctuation in the luminance of multiple image regions from the multiple image regions obtained by dividing a pickup image, an image-processing target region, that is, a region to beimage-processed, on the basis of the first texture quantity; a luminance determination part (130) for determining whether or not the image processing needs to be applied to a present pickup image on the basis of the luminance of the image-processing target region in the present pickup image; a texture determination part (140) for determining, upon calculating a second texture quantity indicating afluctuation in the luminance of the image-processing target region which needs to be image-processed as determined by the luminance determination part, whether or not the image processing should be applied to the image-processing target region on the basis of the second texture quantity; and an image processing part (150) for executing the image processing of the image-processing target region which is to be image-processed as determined by the texture determination part (140).

Description

technical field [0001] The present invention relates to an image processing device, an image processing method, and an image processing program. Background technique [0002] When noise removal processing is performed on captured image data (hereinafter also referred to as “captured image”) acquired by an imaging device, a minute portion of a subject in the captured image may be blurred, that is, the image quality may deteriorate. As a countermeasure against this, a device has been proposed that determines whether noise removal processing is necessary based on the brightness of the captured image, and performs noise removal processing on the captured image when it is judged necessary (for example, refer to Patent Document 1). [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent Laid-Open No. 2005-94087 Contents of the invention [0006] The problem to be solved by the invention [0007] However, the above-mentioned convent...

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Problems solved by technology

[0002] When noise removal processing is performed on captured image data (hereinafter also referred to as "captured image") acquired by an imaging device, a small part of the subject in the captured image may be blurred, that is, the image quality may deteriorate.

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