Strictly speaking image processing is image in -> image out. And image analysis is image in -> data out. The author gives the expression that everything is image processing. Not a big thing but it helps to know the difference if you want to take the correct course :)
"In imaging science, image processing is processing of images using mathematical operations by using any form of signal processing for which the input is an image, a series of images, or a video, such as a photograph or video frame; the output of image processing may be either an image or a set of characteristics or parameters related to the image.[1]"
[1] Rafael C. Gonzalez; Richard E. Woods (2008). Digital Image Processing. Prentice Hall. pp. 1–3. ISBN 978-0-13-168728-8.
