Image collection chip, object imaging recognition device and object imaging recognition method

1. An image collection chip, comprising an optical modulation layer and an image sensing layer, wherein

the optical modulation layer is located on the image sensing layer;

the optical modulation layer is provided with at least two modulation units and the image sensing layer is provided with sensing units corresponding to the at least two modulation units in a form of up and down;

each of the at least two modulation units is provided with at least one modulation subunit; and

two or more modulation units among the at least two modulation units have different graphic structures, and the two or more modulation units having different graphic structures have different modulation roles on spectrum.

2. The image collection chip of claim 1 , further comprising at least two sets of pixel confirmation modules, wherein

each of the at least two sets of pixel confirmation modules comprises at least one of the at least two modulation units and at least one of the sensing units; and

positions of a modulation unit and a sensing unit in a same pixel confirmation module are corresponded in the form of up and down.

3. The image collection chip of claim 1 , wherein the at least one modulation subunit is provided with at least one modulation hole.

4. The image collection chip of claim 3 , wherein respective modulation holes inside a same modulation subunit are arranged into a two-dimensional graphic structure having a specific pattern, and two or more modulation units among the at least two modulation units comprise modulation subunits having different two-dimensional graphic structures.

5. The image collection chip of claim 3 , wherein respective modulation holes inside a same modulation subunit are arranged into a two-dimensional graphic structure having a specific pattern, the specific pattern of the two-dimensional graphic structure comprises:

the modulation holes inside the same modulation subunit have a same specific cross-sectional shape, and the respective modulation holes inside the same modulation subunit are arranged in an array in an order that sizes of structural parameters are gradually varied; or

the respective modulation holes inside the same modulation subunit respectively have a specific cross-sectional shape, and the respective modulation holes inside the same modulation subunit are combined and arranged according to specific cross-sectional shapes of the modulation holes in the same modulation subunit.

6. The image collection chip of claim 5 , wherein the specific cross-sectional shape comprises circle, ellipse, cross, regular polygon, star, or rectangle.

7. The image collection chip of claim 3 , wherein the modulation hole penetrates or does not penetrate the optical modulation layer.

8. The image collection chip of claim 1 , wherein one or more modulation subunits among the at least one modulation subunit are not provided with a modulation hole.

9. The image collection chip of claim 1 , further comprising a signal processing circuit layer, wherein

each of the sensing units comprises at least one sensing subunit, respective sensing subunits are arranged in an array, each of the at least one sensing subunit is provided with at least one image sensor, and the sensing subunits are electrically connected through the signal processing circuit layer.

10. The image collection chip of claim 1 , further comprising a light-transmitting medium layer between the optical modulation layer and the image sensing layer.

11. The image collection chip of claim 10 , wherein the light-transmitting medium layer has a thickness of 50 nm to 1 μm, and comprises silicon dioxide.

12. The image collection chip of claim 1 , wherein the optical modulation layer is made of a silicon-based material.

13. The image collection chip of claim 1 , wherein a size of the image collection chip is smaller than 1 cm×1 cm×0.4 cm.

14. An object imaging recognition device, comprising a light source and the image collection chip of claim 1 , wherein

the light source is configured to emit spectra to an object to be imaged, and the spectra are incident on the image collection chip as incident light after the spectra pass through the object to be imaged; and

the image collection chip is configured to perform light modulation on the incident light to obtain modulated spectra, and detect light intensity of the modulated spectra to determine pixel data of respective pixel points.

15. The object imaging recognition device of claim 14 , wherein

the image collection chip comprises at least two sets of pixel confirmation modules, and each of the at least two sets of pixel confirmation modules comprises at least one of the at least two modulation units and at least one of the sensing units; and

positions of a modulation unit and a sensing unit in a same pixel confirmation module are corresponded in the form of up and down.

16. The object imaging recognition device of claim 15 , wherein each of the at least two sets of pixel confirmation modules performs light modulation on the incident light respectively to obtain at least two modulated spectra.

17. An object recognition method based on the object imaging recognition device of claim 14 , comprising:

emitting spectra to the object to be imaged using the light source, and the spectra are incident on the image collection chip as incident light after the spectra pass through the object to be imaged;

performing light modulation on the incident light to obtain modulated spectra, and detecting light intensity of the modulated spectra using the image collection chip to determine pixel data of respective pixel points; and

integrating the pixel data to form an image of the object to be imaged.

18. The object recognition method of claim 17 , wherein

the image collection chip comprises at least two sets of pixel confirmation modules, and each of the at least two sets of pixel confirmation modules comprises at least one of the at least two modulation units and at least one of the sensing units; and

positions of a modulation unit and a sensing unit in a same pixel confirmation module are corresponded in the form of up and down.

19. The object recognition method of claim 18 , wherein each of the at least two sets of pixel confirmation modules performs light modulation on the incident light respectively to obtain at least two modulated spectra.