hicCorrectMatrix correct

[wangguiqian]

I first use the V991.hic_matrix.h5 file generated by hicBuildMatrix, and then draw the picture:
hicCorrectMatrix diagnostic_plot -m V991.hic_matrix.h5 -o V991_corrected.png

I use this command:
hicCorrectMatrix correct -m V991.hic_matrix.h5 --filterThreshold -1.8 5.1 -o 1C32.hic_corrected.h5
Finally, I used the 1C32.hic_corrected.h5 file filtered by the previous step to draw:

Is there something wrong with the threshold I set? Can you help? I have inquired about this many times but still have no results. Hope that helps.