| 摘要 |
Without repeating arithmetic processing on a plurality of frames, an image is sharpened by using frequency components exceeding Nyquist frequency. An image enhancement apparatus 1 according to the present invention for generating an output image obtained by sharpening an input image includes a non-linear processing unit 10 configured to carry out non-linear processing on an input image signal representing the input image, a filter unit 20 configured to generate a second signal by removing at least a DC component of the frequency components included in the first signal, a limiter 30 configured to generate a third signal by adjusting the second signal, and an adder 40 configured to generate an output image signal representing the output image by adding the third signal to the input image signal. |
