Combine Objects¶

Combine objects together for downstream analysis, usually done after object filtering.

object_composition(img, contours, hierarchy, device, debug=False)

returns device, grouped object, image mask

• Parameters:
  • contours- object list
  • device- device number. Used to count steps in the pipeline
  • debug- Default value is False, if True, intermediate image with ROI will be printed
• Context:
  • This function combines objects together. This is important for downstream analysis of shape characteristics, if plant objects are not combined then one plant can appear to be many different objects.
• Example use:
  • Use In VIS Tutorial
  • Use In NIR Tutorial
  • Use In PSII Tutorial


Original image

Highlighted contours

import plantcv as pcv

# Combine objects so downstream analysis can be run on a single plant object
device, obj, mask = pcv.object_composition(img, roi_objects, hierarchy, device, debug=True)

Combined contours