GradientThreshold=36 cannot reprodue example in paper

[geroldmeisinger]

Thank you for your implementation!

I'm using your program over at lllyasviel/ControlNet#318
However with the default settings using gradientThreshold=36 I'm not able to reproduce the examples in the paper.
I assume the value is derived from "Figure 1 shows the edge areas corresponding to our test image for a threshold value of 36. White edge areas correspond to pixels for which Gx + Gy >= 36. Black pixels are suppressed as non-edges.". The same value is used in the cpp implementaion https://github.com/hongxinliu/edge-drawing/blob/master/include/ed.hpp

implementation by original author https://github.com/CihanTopal/ED_Lib

Figure 1. High-pass filtering residue of Lena image.

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gradientThreshold=36

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gradientThreshold=10

[Yikkkkk]

hello! would you tell me the IR and IR_GT? Maybe there are dataset? thanks your repley~