NOISE DETERMINATION APPARATUS AND METHOD, AND NOISE FILTER

摘要

A technique for determining noise is provided that suppresses misrecognition of significant components in an image as noise in any image captured under any condition. A noise determination apparatus for determining noise in image data that is input in units of frames decomposes the image data into frequency components, samples a predetermined number of data pieces for low-frequency components that have relatively low frequencies and a predetermined number of data pieces for high-frequency components that have relatively high frequencies from the frequency components, and analyzes whether or not the image data includes an edge image, on the basis of a ratio of high-frequency data to low-frequency data.

主权项

1. A noise determination apparatus for determining noise in image data that is input in units of frames,
said noise determination apparatus comprising circuitry configured to: decompose said image data into frequency components: sample a predetermined number of data pieces for low-frequency components that have relatively low frequencies and a predetermined number of data pieces for high-frequency components that have relatively high frequencies from the frequency components; and analyze whether or not said image data includes an edge image, on the basis of a ratio of high-frequency data to low-frequency data.