Image quality evaluation apparatus and method of controlling the same

A method of controlling an image quality evaluation apparatus for evaluating a noise characteristic of a moving image, comprising:

• an acquisition step of, by an acquisition unit, acquiring autocorrelation coefficients for three dimensions defined by a horizontal direction, a vertical direction, and a time direction of evaluation target moving image data;
• a calculation step of, by a calculation unit, calculating a plurality of noise amounts by executing frequency analysis of the autocorrelation coefficients for the three dimensions acquired in the acquisition step and multiplying each frequency analysis result by a visual response function representing a visual characteristic of one of a spatial frequency and a time frequency;
• and
• an evaluation value calculation step of, by an evaluation value calculation unit, calculating a product of the plurality of noise amounts calculated in the calculation step as a moving image noise evaluation value of the evaluation target moving image data.

A computer-readable storage medium which stores a program that causes a computer to control an image quality evaluation apparatus for evaluating a noise characteristic of a moving image, causing the computer to function as:

• an acquisition unit configured to acquire autocorrelation coefficients for three dimensions defined by a horizontal direction, a vertical direction, and a time direction of evaluation target moving image data;
• a calculation unit configured to calculate a plurality of noise amounts by executing frequency analysis of the autocorrelation coefficients for the three dimensions acquired by said acquisition unit and multiplying each frequency analysis result by a visual response function representing a visual characteristic of one of a spatial frequency and a time frequency;
• and
• an evaluation value calculation unit configured to calculate a product of the plurality of noise amounts calculated by said calculation unit as a moving image noise evaluation value of the evaluation target moving image data.