Patent ID: 8497938

Claim:
An image processing method comprising: determining an interpolation reliability of interpolated pixels in a progressive image generated by interpolating an interlaced image, by integrating a first interpolation reliability, said first interpolation reliability being determined based on difference absolute values between pixels on an upper line and pixels on a lower line, used to calculate pixel values to be interpolated, a second interpolation reliability, said second interpolation reliability being determined based on the width of an area used to determine pixels on an upper line and pixels on a lower line, used to calculate said pixel values to be interpolated, and a third interpolation reliability, the third interpolation reliability being determined based on four patterns used as a pattern in which a change in luminance of an upper line and a chance in luminance of a lower line are combined in the area, the four patterns including one of the two luminance changes having a flat characteristic, the two luminance changes having characteristics of increasing or decreasing in a same direction, the two luminance changes having characteristics curved convexly in the same direction, and one of the two luminance changes having an increasing or decreasing characteristic, the other of the two luminance changes having a characteristic curved convexly.