Robotics 1
Image Subtraction
Image Subtraction
This video shows how color images can be subtracted to isolate a single object of a particular color as a bright object on a dark background. Then, we learn the 'center of mass' approach to finding the location of the object in the image, in units of 'pixels'.
This video shows another application of image subtraction: background subtraction. Whereas color subtraction is useful for isolating an object of a particular color, background subtraction is useful for isolating an object that either enters or leaves the camera field of view. In this video, we also learn the difference between a 'grayscale' image and a 'black and white' image. We use the method of 'thresholding' to reduce image noise by converting a grayscale image to a black and white image.
To complete this lab activity, make a video that includes the following in one video:
(1) You saying your name
(2)
(3)
(4)
(1) You saying your name
(2)
(3)
(4)