RGB to HSV¶

Convert image from RGB colorspace to HSV colorspace and split the channels.

rgb2gray_hsv(img, channel, device, debug=None)

returns device, split image (h, s, or v channel)

• Parameters:
  • img- Image to be converted
  • channel- Split 'h' (hue), 's' (saturation), or 'v' (value) channel
  • device- Counter for image processing steps
  • debug - None, "print", or "plot". Print = save to file, Plot = print to screen. Default = None
• Context:
  • Used to help differentiate plant and background
• Example use:
  • Use In VIS Tutorial
  • Use In PSII Tutorial

Original RGB image

from plantcv import plantcv as pcv

# image converted from RGB to HSV, channels are then split. Hue ('h') channel is outputed.

device, h_channel=pcv.rgb2gray_hsv(img, 'h', device, debug="print")

Hue channel image

from plantcv import plantcv as pcv

# image converted from RGB to HSV, channels are then split. Saturation ('s') channel is outputed.

device, s_channel= pcv.rgb2gray_hsv(img, 's', device, debug="print")

Saturation channel image

from plantcv import plantcv as pcv

# image converted from RGB to HSV, channels are then split. Value ('v') channel is outputed.

device, v_channel=pcv.rgb2gray_hsv(img, 'v', device, debug="print")

Value channel image