| 摘要 |
PROBLEM TO BE SOLVED: To reduce the blurring of a picture at the time of enlarging the picture. SOLUTION: A first multiplication part 6 multiplying picture element data of upper and lower scanning lines of an original picture by a first vertical interpolation coefficient of not more than '1', a second multiplication part 7 multiplying picture element data of the scanning line delayed by one line by a second vertical interpolation coefficient obtained by subtracting the first vertical interpolation coefficient from '1', a first addition part 8 adding the multiplication results of the first and second multiplication parts 6 and 7, a third multiplication part 10 multiplying picture element data at the right/left of the inputted scanning line by the first horizontal interpolation coefficient of not more than '1', a fourth multiplication part 11 multiplying picture element data delayed by one picture element by a second horizontal interpolation coefficient obtained by subtracting the first horizontal interpolation coefficient from '1', a second addition part 12 adding the multiplication results of the third and fourth multiplication parts 10 and 11 and an interpolation coefficient generation part 4 generating the first and second horizontal interpolation coefficients and the first and second vertical interpolation coefficients, which have non-linear characteristics are installed. |
