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#196 Scale background for subtraction

Jaak Kütt requested to merge feature/196-scale-rolling-ball into main

Well, it is faster - a few seconds to do subtraction with a ball of a 300-500 radius. But looking at the comparison from the examples below (done with method=ball and radius=120) it is also noticeably different. This result is using a generic image scaling provided by skimage together with the scaling factors that ImageJ used - but ImageJ is also doing a bit extra work which is reflected in their rolling ball implementation.

Raw Scaled BG Unscaled BG
AVG_AMPK_Gel5-raw AVG_AMPK_Gel5-ball-120-scaled AVG_AMPK_Gel5-ball-120-unscaled
COX4_p-AMPK_gel5_60secHR1-raw COX4_p-AMPK_gel5_60secHR1-120-ball-scaled COX4_p-AMPK_gel5_60secHR1-120-ball-unscaled
Edited by Jaak Kütt

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