Create a rectangular Region of Interest (ROI)¶

plantcv.roi.rectangle(x, y, h, w, img)

returns roi_contour, roi_hierarchy

• Parameters:
  • x - The x-coordinate of the upper left corner of the rectangle.
  • y - The y-coordinate of the upper left corner of the rectangle.
  • h - The height of the rectangle.
  • w - The width of the rectangle.
  • img - An RGB or grayscale image to plot the ROI on in debug mode.
• Context:
  • Used to define a region of interest in the image.

Reference Image

from plantcv import plantcv as pcv

# Set global debug behavior to None (default), "print" (to file), or "plot" (Jupyter Notebooks or X11)
pcv.params.debug = "print"

roi_contour, roi_hierarchy = pcv.roi.rectangle(x=100, y=100, h=200, w=200, img=rgb_img)