3D imaging and lensless imaging: light field camera/display, holography, and phase retrieval
ERRATA: at 48:43, the expression in the bottom right purple rectangle should be exp(-2 pi i K.X) instead of exp(-2 pi i K.x). (Thanks to YG123 for pointing this out)
Lecture notes: drive.google.com/drive/folder...
My PhD thesis on phase retrieval: doi.org/10.4233/uuid:c8adfe08...
0:00 Introduction
4:37 Light field camera
7:11 Holography
8:01 Inline holography
9:46 Off-axis holography
13:37 Reflection holography
16:55 Rainbow hologram
20:04 Phase imaging
21:38 Zernike phase contrast microscopy
25:01 Shack-Hartmann wavefront sensor
27:07 Digital holography microscopy
30:20 Coherent Diffractive Imaging (CDI)
32:25 CDI: inline holography
33:27 Fourier Transform Holography (off-axis holography)
35:48 Iterative CDI algorithms
47:20 Ptychography
52:26 Fourier ptychography
Пікірлер: 7
Hi, there may be a typo at 48:43, the expression in the bottom right purple rectangle should be exp(-2 PI i K.X) instead of exp(-2 PI i K.x).
@SanderKonijnenberg
Жыл бұрын
Yes, you are right. Thank you for pointing this out. I'll add this correction in the video description.
This is excellent - Thank you for making this material public. You have made amazing lectures, that i love to revisit when in doubt.
Thats amazing! Thank you, great lecture, helped me to better understand holography princples
Hi, I think this video is about 3d imaging, but for inline (Gabor) holography, many text book assumes the object is a plane which is represented as the transmittance coefficient t(x,y), as you can see it is 2D. So My question is that can we get a 3d imaging for Gabor holography? Especially, suppose we have reconstructed the wave/light for a Gabor holography, can we see the images in different views?
@SanderKonijnenberg
Жыл бұрын
Thanks for this interesting question. I think it is best answered by a direct quote from Gabor himself [GABOR, D. A, New Microscopic Principle. Nature 161, 777-778 (1948)]: 'One must expect that looking through such a properly processed diagram one will see behind it the original object, as if it were in place. [...] It is a striking property of these diagrams that they constitute records of three-dimensional as well as of plane objects. One plane after another of extended objects can be observed in the microscope, just as if the object were really in position.'
Hey sir I have a question can you help me please?