| 摘要 |
PROBLEM TO BE SOLVED: To provide an image conversion device, an image conversion method and an image conversion program capable of solving a problem that the multiplication frequency for convolution integral increases in super-resolution processing.SOLUTION: A super-resolution processor 30 reads out an observation image picked up by an optical system from a memory, and performs super-resolution processing on the observation image by using the convolution integral between the observation image and a point spread function representing the transfer function of the optical system to generate a high-resolution image having higher resolution than the observation image. The super-resolution processor 30 calculates the convolution integral between the point spread function and an input image by using adders 330, 340 for obtaining the sum of pixel values at rotationally symmetrical positions in an input image based on the rotational symmetry of the point spread function when the convolution integral between the input image and the point spread function is performed, and multipliers 322, 323 for multiplying the sum of the pixel values obtained by the adders 330, 340 and coefficient values at the rotationally symmetrical positions of the point spread function.SELECTED DRAWING: Figure 4 |
