Could we use a high-pass filter to perform edge detection in a program such as Photoshop or GIMP? The traditional edge detection mechanisms that I have heard of involve looking at the gradients of the intensity of neighboring pixels. A quick look at stack overflow suggests that in terms of computational concerns, high-pass filters might perform quickly, but would not be as accurate as desired: https://dsp.stackexchange.com/questions/2830/can-edge-detection-be-done-in-the-frequency-domain. Could there perhaps be a combined approach that first applied a high-pass filter, then performed further computations in the spatial domain to detect edges?
Could we use a high-pass filter to perform edge detection in a program such as Photoshop or GIMP? The traditional edge detection mechanisms that I have heard of involve looking at the gradients of the intensity of neighboring pixels. A quick look at stack overflow suggests that in terms of computational concerns, high-pass filters might perform quickly, but would not be as accurate as desired: https://dsp.stackexchange.com/questions/2830/can-edge-detection-be-done-in-the-frequency-domain. Could there perhaps be a combined approach that first applied a high-pass filter, then performed further computations in the spatial domain to detect edges?