Ink humanoid somatosensory projection is an interactive image projection effect realized by camera and computer graphics technology. The technology captures the movements and postures of the human body through a camera, and uses computer algorithms to process these data, and then projects the processed images onto the screen in real time. In the ink humanoid somatosensory projection, the camera will capture the contours and movements of the human body and transmit this information to the computer. According to the captured data, the computer will convert the shape of the human body into an ink style through a specific algorithm, and display it on the screen in real time. In this way, when a person stands in front of the camera and moves or makes an action, the ink figure on the screen will also make a corresponding action accordingly. The effect of ink and wash is usually achieved by processing the gray value of the image, edge detection and morphological transformation. This kind of projection effect gives people an artistic feeling, making people's movements and shapes become like ink painting.