Image Subtract¶

Obtain a image of the pixelwise input values within two image files. This is a wrapper for the OpenCV function subtract.

image_subtract(img, img2, device, debug=None)

returns device, subtracted image

• Parameters:
  • img - image to be analyzed
  • img2 - image to subtract
  • device - Counter for image processing steps
  • debug - None, "print", or "plot". Print = save to file, Plot = print to screen. Default = None
• Context:
  • Get features that are different between images
• Example use:
  • Use In NIR Tutorial

Original grayscale image (image 1)

Image to be subtracted (image 2)

from plantcv import plantcv as pcv

# Subtract image from another image. 
device, subtracted_img = pcv.image_subtract(img, img2,  device, debug="print")

Subtraction of image 2 from image 1