Table 2 Segmentation parameters
From: GiA Roots: software for the high throughput analysis of plant root system architecture
Thresholding Algorithm | Parameter | Description |
|---|---|---|
Global thresholding | Threshold value | Threshold value of pixel intensity to be considered as part of the root. |
Adaptive thresholding | Block size | The size of square regions to measure the average local pixel intensity. |
… | Mean shift | Threshold offset that a focal pixel intensity must exceed relative to the pixel intensity averaged over a local region for it to be considered as part of the root. |
Double adaptive thresholding | Neighborhood size | Critical size of a growing square centered on a pixel for which average pixel intensity is calculated. |
… | Bound drop value | Threshold decrease in average pixel intensity in square neighborhoods of increasing size that must be reached for a pixel to be considered as part of the root. |
All methods | Ignore con comp of size less | All connected components with fewer than this many pixels are removed. |