harry potter uses that cloak to become invisible color dectection technique and segmentation in greeen screening we remove background in this techniqu we remove the background
alias python='/Library/Frameworks/Python.framework/Versions/3.6/bin/python3.6' replace the pixels corresponding with background pixels to generate the invisibilty feature
Hue : This channel encodes color information. Hue can be thought of an angle where 0 degree corresponds to the red color, 120 degrees corresponds to the green color, and 240 degrees corresponds to the blue color. Saturation : This channel encodes the intensity/purity of color. For example, pink is less saturated than red. $Value : This channel encodes the brightness of color. Shading and gloss components of an image appear in this channel reading the videocapture video