Patent ID: 9626751
Date: 2017-04-18
CPC Classifications: G06T,H04N

Claim:
1. A computer program product, for use in a method of manipulating the spatial frequencies of a multichannel image, said computer program product comprising a non-transitory computer-readable storage medium storing instructions that, when executed on a processor, cause the processor to manipulate the image according to said method, said method comprising: inputting the multichannel image; converting the multichannel image into a single channel image; separating the single channel image into a first component image comprising the high spatial frequencies, and a second component image comprising the low spatial frequencies; filtering said first component image for filtering out frequencies above an upper high-spatial-frequency threshold, and for filtering out frequencies below a lower high-spatial-frequency threshold; blurring said filtered first component image at each of said upper high-spatial-frequency threshold and said lower high-spatial-frequency threshold; filtering said second component image for filtering out frequencies above an upper low-spatial-frequency threshold, and for filtering out frequencies below a lower low-spatial-frequency threshold; and producing a composite image by subtracting the filtered and blurred first component image from the filtered second component image.