Road sign for determining position of robot, device, and method for distinguishing labels with different functions in road sign
AssigneeHit Robot Group Shanghai Co.,Ltd.
InventorsHui QIAO, Zhaowen HE
Life of this patent
Estimating the term…
Abstract
A road sign for determining the position of a robot, a device, and a method for distinguishing labels with different functions in a road sign, wherein the road sign is composed of more than one label with different functions; a label is composed of more than one mark; and the marks are coated with a conversion material capable of exciting light with a specific wavelength, or made of the conversion material. Excited light can be used to excite the conversion material to emit emission light, and the road sign is recognized by collecting the emission light, so that interference when the road sign is recognized can be effectively reduced.
Claims25
A road sign for determining the position of a robot, the road sign consisting of more than one label with different functions, the label consisting of more than one mark, the mark being coated with a conversion material capable of exciting light with a specific wavelength or made of the conversion material.
A method for distinguishing labels with different functions in a road sign, the labels with different functions being coated with different conversion materials or made of different conversion materials, the conversion materials exciting light with a specific wavelength, characterized in that the method comprises:
- (1) projecting an excitation light onto the road sign such that one of the conversion materials of the road sign excites emitted light;
- (2) selecting an optical filter, the emitted light in the step 1 being permeable to the optical filter;
- (3) using a camera to collect the emitted light passing through the optical filter in step 2 so that an image of a corresponding one of the labels is obtained and the corresponding label is marked;
- (4) repeating steps 1 through 3 until all the labels with different functions in the road sign are collected and marked;
- (5) combining the images of all the collected labels into one image.
Dependencies are inferred from the claim text.