add "1e-6" to avoid [RuntimWarning: divide by zero encountered in divide or cast] - #9

add "1e-6" to avoid [RuntimWarning: divide by zero encountered in divide or cast]#9

XavierJiezou wants to merge 3 commits into

Utkarsh-Deshmukh:masterUtkarsh-Deshmukh/Single-Image-Dehazing-Python:masterfrom

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