Isfahan MISP Dataset

Kashefpur, Masoud; Kafieh, Rahele; Jorjandi, Sahar; Golmohammadi, Hadis; Khodabande, Zahra; Abbasi, Mohammadreza; Teifuri, Nilufar; Fakharzadeh, Ali Akbar; Kashefpoor, Maryam; Rabbani, Hossein

doi:10.4103/2228-7477.199157

Cited by 7 publications

(1 citation statement)

References 13 publications

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“…In many scenarios in daily life, such as driving in foggy weather, detection of biological tissues through skin [1] and observation of phenomena occurring under surging waves, geometric optical scattering problems often occur. In recent decades, researchers have proposed many innovative approaches to overcome scattering, including optical coherence tomography [2], guidestar-assisted wavefront shaping [3][4][5][6], transmission matrix measurement methods [7][8][9], digital holography [10], phase conjugation methods [11][12][13] and speckle auto-correlation methods [14,15]. Among these techniques, the speckle correlation with deconvolution method based on the optical 'memory effect' (ME) [16,17] stands out because it does not require a coherent light source or an iteration algorithm.…”

Section: Introductionmentioning

confidence: 99%

Depth detection capability and ultra-large depth of field in imaging through a thin scattering layer

Xie

Gao

et al. 2019

J. Opt.

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A wavelength-depth-matching method based on speckle correlation is proposed to achieve an ultra-large depth of field (DOF) of 90.5 mm experimentally on one side in imaging through a thin scattering layer. By making rational use of chromatic aberrations to compensate for the effects of depth differences, we determine the depth information of a target object using a incoherent wavelength-tunable light source. A random matrix that satisfies the distribution with a root mean square of 1 μm and a correlation length of 100 μm is generated to simulate the varying heights of the scattering surfaces which is used to demonstrate that larger DOF can be attained theoretically. This method, with its improved depth detection capability and ultra-large DOF, makes 3D dynamic imaging through scattering media possible.

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