write shorter "Visualization of weights assigned to different vascular segments in under-(a) and over-(b) noise modes at rate of 0.6, where the blue and red annotations in the second column denote the removed and added vascular segments respectively. 
The vascular segments close to the removed ones in under-noise mode and the added ones themselves in the over-noise mode are given higher weights." In your entire response, the letter h should appear less than 5.
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