Systems and methods for performing machine vision using diffuse structured light
View Patent ↗Systems for performing machine vision using diffuse structured light comprising: a linear diffuser having an axis of diffusion; a light source that projects an illumination pattern through the linear diffuser and onto a scene, wherein the illumination pattern has transiationai symmetry in a. direction of translation that is aligned with the axis of diffusion; and an image sensor that detects tight reflecting from the scene and that outputs signals corresponding to the detected light. Methods for performing machine vision using diffuse structured light comprising: projecting an illumination pattern from a light source through a linear diffuser and onto a scene, wherein the linear diffuser has an axis of diffusion and the illumination pattern has transiationai symmetry in a direction of translation that is aligned with the axis of diffusion; and detecting light reflecting from, the scene using an image sensor that outputs signals corresponding to the detected light.
1. A system for performing machine vision using diffuse structured light, comprising:
a linear diffuser having a plane of diffusion;
a light source that projects a non-random, two-dimensional illumination pattern through the linear diffuser and onto a scene, wherein the illumination pattern has translational symmetry in a direction of translation that is parallel to the plane of diffusion; and
an image sensor that detects light reflecting from the scene and that outputs signals corresponding to the detected light.
2. The system of claim 1 , further comprising a hardware processor coupled to the image sensor that receives the output signals.
3. The system of claim 1 , wherein the linear diffuser includes refractive elements.
4. The system of claim 1 , wherein the linear diffuser includes reflective elements.
5. The system of claim 1 , wherein the linear diffuser includes a lenticular lens.
6. The system of claim 1 , wherein the linear diffuser is a planar diffuser.
7. The system of claim 1 , wherein the linear diffuser includes a polarizer.
8. The system of claim 1 , wherein the image sensor includes a polarizer.
9. The system of claim 1 , wherein the illumination pattern includes at least one of a binary light pattern, a De Bruijin light pattern, a N-ary light pattern, a continuous ramp brightness function pattern, a triangular brightness function pattern, a sinusoidal brightness function pattern, and a high frequency strip pattern.
10. A method for performing machine vision using diffuse structured light, comprising:
projecting a non-random, two-dimensional illumination pattern from a light source through a linear diffuser and onto a scene, wherein the linear diffuser has a plane of diffusion and the illumination pattern has translational symmetry in a direction of translation that is parallel to the plane of diffusion; and
detecting light reflecting from the scene using an image sensor that outputs signals corresponding to the detected light.
11. The method of claim 10 , further comprising receiving the output signals at a hardware processor coupled to the image sensor.
12. The method of claim 10 , wherein the linear diffuser includes refractive elements elements.
13. The method of claim 10 , wherein the linear diffuser includes reflective elements.
14. The method of claim 10 , wherein the linear diffuser includes a lenticular lens.
15. The method of claim 10 , wherein the linear diffuser is a planar diffuser.
16. The method of claim 10 , wherein the linear diffuser includes a polarizer.
17. The method of claim 10 , wherein the image sensor includes a polarizer.
18. The method of claim 10 , wherein the illumination pattern includes at least one of a binary light pattern, a De Bruijin light pattern, a N-ary light pattern, a continuous ramp brightness function pattern, a triangular brightness function pattern, a sinusoidal brightness function pattern, and a high frequency strip pattern.