Image processing apparatus and method

摘要

According to one embodiment, an image processing apparatus includes following units. The correlation calculation unit calculates correlations between a first region and predetermined first basis vectors. The distance calculation unit calculates distances between the first region and second regions on a subspace generated by the second basis vectors selected from the first basis vectors. The feature quantity calculation unit calculates a feature quantity based on the correlations. The weight calculation unit calculates weights based on the distances and the feature quantity. The pixel value calculation unit calculates a weighted average of pixel values according to the weights to generate an output pixel value.

主权项

1. An image processing apparatus comprising a processor configured to:
calculate first correlations between a first region and a plurality of predetermined first basis vectors, the first region including a first pixel in an image; select one or more second basis vectors from the first basis vectors in accordance with magnitudes of the first correlations; calculate distances between the first region and a plurality of second regions on a subspace generated by the second basis vectors, the second regions including second pixels in the image, respectively; calculate a feature quantity indicating a feature of the first region based on one or more second correlations corresponding to one or more predetermined third basis vectors among the first correlations, the third basis vectors being selected from the first basis vectors; calculate weights to be respectively assigned to the second pixels based on the distances and the feature quantity; and calculate a weighted average of pixel values of the second pixels according to the weights to generate an output pixel value.