Image processing apparatus, image processing method, and program

An image processing method comprising the steps of:

• allowing parameter input means for receiving a parameter including an output phase which corresponds to coordinates of an output pixel, a size of the output pixel, and a variable used for a condensing model;
• allowing tap extraction means for extracting a tap including a pixel value of a focus pixel which corresponds to the output phase of an input image and pixel values of neighboring pixels of the focus pixel;
• allowing predictive coefficient calculation means for calculating a predictive coefficient to be multiplied by each of elements of the tap using the parameter and a coefficient configuration value stored beforehand;
• and
• allowing pixel value calculation means for calculating a value of the output pixel by performing a product-sum operation of the calculated predictive coefficient and each of the elements of the tap.

A program allowing a computer to function as an image processing apparatus comprising:

• parameter input means for receiving a parameter including an output phase which corresponds to coordinates of an output pixel, a size of the output pixel, and a variable used for a condensing model;
• tap extraction means for extracting a tap including a pixel value of a focus pixel which corresponds to the output phase of an input image and pixel values of neighboring pixels of the focus pixel;
• predictive coefficient calculation means for calculating a predictive coefficient to be multiplied by each of elements of the tap using the parameter and a coefficient configuration value stored beforehand;
• and
• pixel value calculation means for calculating a value of the output pixel by performing a product-sum operation of the calculated predictive coefficient and each of the elements of the tap.

An image processing apparatus comprising:

• a parameter input unit that receives a parameter including an output phase which corresponds to coordinates of an output pixel, a size of the output pixel, and a variable used for a condensing model;
• a tap extraction unit that extracts a tap including a pixel value of a focus pixel which corresponds to the output phase of an input image and pixel values of neighboring pixels of the focus pixel;
• a predictive coefficient calculation unit that calculates a predictive coefficient to be multiplied by each of elements of the tap using the parameter and a coefficient configuration value stored beforehand;
• and
• a pixel value operation unit that calculates a value of the output pixel by performing a product-sum operation of the calculated predictive coefficient and each of the elements of the tap.