IMAGE PROCESSING APPARATUS AND METHOD, AND PROGRAM

摘要

An image processing apparatus includes a color variation amount/normalized dynamic range operation unit that operates color variation amounts indicating variation amounts of a first color component and a second color component for a third color component of the plurality of color components in pixels of the designated region of a first image output from a single-plate type pixel portion, and a coefficient reading unit that reads a coefficient stored in advance on the basis of a result of class sorting of the designated region, in which an operation method of pixel values of the second image formed by pixels of only the first color component and an operation method of pixel values of the second image formed by pixels of only the second color component are changed on the basis of the color variation amounts and the normalized dynamic ranges.

主权项

1. An image processing apparatus comprising:
a color variation amount/normalized dynamic range operation unit that selects a designated region which is a region including a predetermined number of pixels, from a first image formed by image signals which are output from a single-plate type pixel portion where pixels respectively corresponding to a plurality of color components are regularly disposed on a plane, and operates color variation amounts indicating variation amounts of a first color component and a second color component for a third color component of the plurality of color components in pixels of the designated region, and normalized dynamic ranges obtained by normalizing dynamic ranges of a pixel value of the first color component and a pixel value of the second color component; a class sorting unit that performs class sorting on the designated region on the basis of a feature amount obtained from pixel values of the designated region; a coefficient reading unit that reads a coefficient stored in advance on the basis of a result of the class sorting; and a product-sum operation unit that uses a prediction tap including pixel values related to predetermined pixels of the designated region for the prediction tap as a variable, and operates pixel values of second images through a product-sum operation using the read coefficient, each of the second images being formed by pixels of only a single color component of the plurality of color components, wherein an operation method of pixel values of the second image formed by pixels of only the first color component and an operation method of pixel values of the second image formed by pixels of only the second color component are changed on the basis of the color variation amounts and the normalized dynamic ranges.