IMAGING SYSTEM AND METHOD FOR DIAGNOSTIC IMAGING

• US 20160015264A1
• Filed: 07/17/2015
• Published: 01/21/2016
• Est. Priority Date: 07/17/2014
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Original Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Inventors: PANKAJAKSHAN, Praveen, CHAKROBORTY, Sandipan
• Application Number:
  US14/802,160
• Publication Number:
  US 20160015264A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 3/10 Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
• CPC Class Codes: G03H 1/0443 Digital holography, i.e. recording holograms with digital recording means holobject computation G03H1/0866
• CPC Class Codes: G03H 1/0866 Digital holographic imaging, i.e. synthesizing holobjects from holograms
• CPC Class Codes: G03H 1/16 using Fourier transform G03H1/10, G03H1/12, G03H1/14 take precedence; analogue computers G06G, e.g. G06G7/19
• CPC Class Codes: G03H 2001/0816 Iterative algorithms
• CPC Class Codes: G03H 2222/24 Low coherence light normally not allowing valuable record or reconstruction G03H1/06 takes precedence
• CPC Class Codes: G03H 2223/23 Diffractive element
• CPC Class Codes: G03H 2227/02 Handheld portable device, e.g. holographic camera, mobile holographic display

Abstract

An imaging system and method for using an optical device with an electronic device for diagnostic imaging is provided. The imaging system may include a controller configured to capture a series of holograms by powering a light source of the optical device to illuminate an object, wherein light from the light source is collimated onto the object through an aperture of the optical device. The controller may be configured to extract an interference pattern of the object from the series of holograms, wherein the interference pattern is produced by interference between a reflected beam from the object and a reference beam formed by a diffraction mirror of the optical device. The controller may be configured to record at least one image of the object based on the interference pattern. The imaging system may include a data storage configured to store the at least one image.

Claims

1. An imaging system for using an optical device with an electronic device for diagnostic imaging, wherein the imaging system comprises:

a controller configured to

capture a series of holograms by powering a light source of the optical device to illuminate an object, wherein light from the light source is collimated onto the object through an aperture of the optical device,

extract an interference pattern of the object from the series of holograms, wherein the interference pattern is produced by interference between a reflected beam from the object and a reference beam formed by a diffraction mirror of the optical device, and

record at least one image of the object based on the interference pattern; and

a non-transitory data storage configured to store the at least one image.

2. The imaging system of claim 1, wherein, when recording the at least one image of the object based on the interference pattern, the imaging system is configured to:

obtain a frequency spectrum of the object by obtaining a Fresnel transform of an amplitude and a phase retrieved from the interference pattern, wherein a high frequency portion in the frequency spectrum is recovered using an iterative restoration approach; and

obtain the at least one image of the object by obtaining a Fourier transform of the frequency spectrum, wherein the at least one image is a low-resolution image.

3. The imaging system of claim 1, wherein, when recording the at least one image of the image based on the interference pattern, the imaging system is configured to:

obtain a frequency spectrum of the object by obtaining a Fresnel transform of an amplitude and a phase retrieved from the interference pattern, wherein a high frequency portion in the frequency spectrum is recovered using an iterative restoration approach; and

obtain the at least one image of the object by obtaining an inverse Fourier transform of the frequency spectrum, wherein the at least one image is a high-resolution image.

4. The imaging system of claim 1, wherein the light is partially reflected and partially transmitted by a beam splitter.

5. The imaging system of claim 4, wherein the light is split by the beam splitter into an incident beam and the reference beam, and the incident beam passes through a phase plate and is reflected from the object.

6. The imaging system of claim 1, wherein the reference beam is formed by the light source.

7. The imaging system of claim 1, wherein the optical device comprises an adaptor, the adaptor comprising:

a housing facility comprising a proximal end and a distal end, the housing facility being configured to removably attach to the electronic device at the proximal end, and

the proximal end is configured to surround an imaging sensor of the electronic device and the distal end is configured to be fixed on or near the object using a head strap.

8. The imaging system of claim 1, wherein the imaging system is further configured to:

display the recorded at least one image on the electronic device; and

authenticate the recorded at least one image by comparing the recorded at least one image to at least one pre-stored image of the object.

9. A method of operating an optical device, the method comprising:

capturing a series of holograms by powering a light source associated with the optical device to illuminate an object, wherein light from the light source is collimated onto the object through an aperture;

extracting an interference pattern of the object from the series of holograms, wherein the interference pattern is produced by interference between a reflected beam from the object and a reference beam formed by a diffraction mirror associated with the optical device;

recording at least one image of the object based on the interference pattern; and

storing the at least one image in a data storage of an electronic device.

10. The method of claim 9, wherein the recording of the at least one image comprises:

obtaining a frequency spectrum of the object by obtaining a Fresnel transform of an amplitude and a phase retrieved from the interference pattern, wherein a high frequency portion in the frequency spectrum is recovered using an iterative restoration approach; and

obtaining the at least one image of the object by obtaining a Fourier transform of the frequency spectrum, wherein the at least one image is a low-resolution image.

11. The method of claim 9, wherein the recording of the at least one image comprises:

obtaining a frequency spectrum of the object by obtaining a Fresnel transform of an amplitude and a phase retrieved from the interference pattern, wherein a high frequency portion in the frequency spectrum is recovered using an iterative restoration approach; and

obtaining the at least one image of the object by obtaining an inverse Fourier transform of the frequency spectrum, wherein the at least one image is a high-resolution image.

12. The method of claim 9, wherein the light is partially reflected and partially transmitted by a beam splitter.

13. The method of claim 12, wherein the light is split by the beam splitter into an incident beam and the reference beam, and the incident beam passes through a phase plate and is reflected from the object.

14. The method of claim 9, wherein the reference beam is formed by the light source.

15. The method of claim 9, further comprising:

displaying the recorded at least one image on the electronic device; and

authenticating the recorded at least one image by comparing the recorded at least one image to at least one pre-stored image of the object.

16. An imaging system for recording at least one image of an object, the imaging system comprising:

a housing facility comprising a light source, an aperture, a diffraction mirror, a head strap, a display screen, a data storage, and a controller, wherein;

the housing facility comprises a proximal end and a distal end, and is configured to attach to the display screen at the proximal end; and

the controller is configured to

capture a series of holograms by powering the light source to illuminate the object, wherein light from the light source is collimated onto the object through the aperture,

extract an interference pattern of the object from the series of holograms, wherein the interference pattern is produced by interference between a reflected beam from the object and a reference beam formed by the diffraction mirror,

record at least one image of the object based on the interference pattern, and

store the at least one image in the data storage.

17. The imaging system of claim 16, wherein, when recording the at least one image of the object based on the interference pattern, the controller is further configured to:

obtain a frequency spectrum of the object by obtaining a Fresnel transform of an amplitude and a phase retrieved from the interference pattern, wherein a high frequency portion in the frequency spectrum is recovered using an iterative restoration approach; and

obtain the at least one image of the object by obtaining a Fourier transform of the frequency spectrum, wherein the at least one image is a low-resolution image.

18. The imaging system of claim 16, wherein, when recording the at least one image of the object based on the interference pattern, the controller is further configured to:

obtain a frequency spectrum of the object by obtaining a Fresnel transform of an amplitude and a phase retrieved from the interference pattern, wherein a high frequency portion in the frequency spectrum is recovered using an iterative restoration approach; and

obtain the at least one image of the object by obtaining an inverse Fourier transform of the frequency spectrum, wherein the at least one image is a high-resolution image.

19. The imaging system of claim 18, wherein the light is partially reflected and partially transmitted by a beam splitter.

20. The imaging system of claim 16, wherein the controller is further configured to:

display the recorded at least one image on the display screen; and

authenticate the recorded at least one image by comparing the recorded at least one image to at least one pre-stored image of the object.

21. An imaging adaptor comprising:

a housing configured to attach to an image sensor of an electronic device, and configured to be fixed to or near an object, wherein the imaging adaptor is configured to

emit light towards the object,

capture a series of holograms generated by light reflected from the object, and

generate an interference pattern from the series of holograms, wherein the interference pattern is configured to be processed to record an image of the object.

22. The imaging adaptor of claim 21, wherein the electronic device is a smartphone.

23. The imaging adaptor of claim 21, wherein the object is an eye.