Target image acquisition system and method

A system for obtaining a target image, comprising:

• an acquisition camera having first pixels and second pixels, having a camera resolution, and being configured to respectively acquire a first wavelength image and a second wavelength image from a target area;
• a floodlight illumination source configured to provide illumination of a first wavelength for the target area;
• a structured light projector configured to project a structured light beam of a second wavelength, different from the first wavelength, to the target area;
• and
• a processor connected to the acquisition camera, the floodlight illumination source, and the structured light projector, and configured to:
• control the acquisition camera to acquire a target floodlight image under the illumination of the floodlight illumination source, wherein the target floodlight image has a first resolution lower than the camera resolution;
• recognize a foreground target in the target floodlight image, and obtain a foreground target area corresponding to the foreground target in the target floodlight image, wherein the foreground target area is smaller than the target area;
• control the acquisition camera to acquire a structured light image of the obtained foreground target area under projection of the structured light projector;
• and
• extract a pixel area of the structured light image that corresponds to the foreground target for obtaining a target structured light image.

A system for obtaining a target image, comprising:

• an acquisition camera having a camera resolution and configured to acquire an image from a target area;
• a floodlight illumination source configured to provide illumination for the target area;
• a structured light projector configured to project a structured light beam to the target area;
• and
• a processor connected to the acquisition camera, the floodlight illumination source, and the structured light projector, and configured to:
• control the acquisition camera to acquire a target floodlight image under illumination of the floodlight illumination source, wherein the target floodlight image has a first resolution lower than the camera resolution;
• recognize a foreground target in the target floodlight image;
• and
• control the acquisition camera to acquire a target structured light image on pixels corresponding to the foreground target and under projection of the structured light projector in a cropping mode.