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1. WO2021005105 - IMAGING SYSTEMS, DEVICES AND METHODS

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

CLAIMS

1. An imaging system comprising circuitry configured to obtain image data of a scene that is illuminated with patterned light, determine bright regions and dark regions based on the image data, and relate image information related to the bright regions to image information related to the dark regions in order to determine characteristics of atmospheric aerosol particles.

2. The imaging system of claim 1, wherein the circuitry is configured to calculate an intensity ratio based on the image information related to the bright regions and the image information related to the dark regions.

3. The imaging system of claim 2, wherein the circuitry is further configured to compare the intensity-ratio with a threshold value.

4. The imaging system of claim 1 , wherein the circuitry is configured to determine if atmos pheric aerosol particles are present.

5. The imaging system of claim 1 comprising circuitry configured to illuminate the scene with patterned light.

6. The imaging system of claim 5, wherein the patterned light comprises high-intensity light ar eas and low-intensity light areas.

7. The imaging system of claim 1, wherein the circuitry is further configured to determine in tensity information of the image data for each pixel of the image.

8. The imaging system of claim 1, wherein the circuitry is further configured to apply a local-maxima filter on the image information to identify the bright regions.

9. The imaging system of claim 1, wherein the circuitry is further configured to apply a local-minima filter on the image information to identify the dark regions.

10. The imaging system of claim 1, wherein the image information related to the bright regions and the image information related to the dark regions comprises intensity information.

11. The imaging system of claim 1, wherein the circuitry is further configured to determine re gions of interest within the image data and to relate, for each region of interest, image information related to the bright regions to image information related to the dark regions in order to determine characteristics of atmospheric aerosol particles.

12. A method to:

obtain image data of a scene that is illuminated with patterned light,

determine bright regions and dark regions based on the image data,

relate image information related to the bright regions to image information related to the dark regions in order to determine characteristics of atmospheric aerosol particles.

13. An imaging system comprising circuitry configured to:

obtain a first image data of a scene that is illuminated with patterned light and a second im age data of a scene that is illuminated with patterned light, and

compare the first image data with the second image data in order to determine characteristics of atmospheric precipitation particles.

14. The imaging system of claim 13, wherein the circuitry is configured to obtain a motion vec tor field based by comparing the first image data with the second image data.

15. The imaging system of claim 14, wherein the circuitry is further configured to determine an average velocity and average direction angel of the motion vectors of the motion vector field and configured to compare the average velocity with a threshold velocity and the average direction angel of the motion vectors with a threshold angle.

16. The imaging system of claim 13, wherein the circuitry is configured to determine precipita tion articles are present.

17. The imaging system of claim 13 comprising circuitry configured to illuminate the scene with patterned light.

18. The imaging system of claim 17, wherein the patterned light comprises high-intensity light areas and low-intensity light areas.

19. The imaging system of claim 13, wherein the circuitry is further configured to determine in tensity information of the image data for each pixel of the image.

20. The imaging system of claim 13, wherein the circuitry is further configured to apply a local-maxima filter on the image information to identify the bright regions.

21. The imaging system of claim 13, wherein the circuitry is further configured to apply a local-minima filter on the image information to identify the dark regions.

22. The imaging system of claim 13, wherein the image information related to the bright regions and the image information related to the dark regions comprises intensity information.

23. The imaging system of claim 13, wherein the circuitry is further configured to determine re gions of interest within the image data and to compare, for each region of interest, the first image data with the second image data in order to determine characteristics of atmospheric precipitation particles.

24. The system of claim 13, wherein the circuitry is further configured to obtain the first image data and the second image data based on the bright regions.

25. A method to:

obtain image data of a scene that is illuminated with patterned light,

determine bright regions and dark regions based on the image data,

relate image information related to the bright regions to image information related to the dark regions in order to determine characteristics of atmospheric aerosol particles.

26. A time of flight camera comprising the imaging system of claim 1 and the imaging system of claim 13.