First of all, judging by the artefacts that Photoshop left on the borders of the petals, I'd say that it applies the mask by using a ... ... <看更多>

This source code is a MATLAB implementation of a nonlinear unsharp masking method, published in the proceeding of ICEIC 2020, Barcelona, Spain. ... <看更多>

Unsharp Mask is a sharpening filter. Intuitively, you apply high pass filter on an image and add the scaled result to the original image. ... <看更多>