Abstract
Coded aperture correlation holography (COACH) is a relatively new technique to record holograms of incoherently illuminated scenes. In this review, we survey the main milestones in the COACH topic from two main points of view. First, we review the prime architectures of optical hologram recorders in the family of COACH systems. Second, we discuss some of the key applications of these recorders in the field of imaging in general, and for 3D super-resolution imaging, partial aperture imaging, and seeing through scattering medium, in particular. We summarize this overview with a general perspective on this research topic and its prospective directions.
Highlights
Holography is a tool for recording a visual scene and reproducing it as close as possible to reality.In holography, even though only intensity sensors are used, it is possible to record the phase pattern of light, and the depth information, along with the intensity variation
Once the system is calibrated by the recording of the point spread holograms for some longitudinal range, a 3D image of the object can be reconstructed by cross-correlation with the PSH library
The concept of Coded aperture correlation holography (COACH) was suggested as a different 3D incoherent holographic technique with better axial resolution than Fresnel incoherent correlation holography (FINCH)
Summary
Holography is a tool for recording a visual scene and reproducing it as close as possible to reality. One notable invention in the field of incoherent digital holography is Fresnel incoherent correlation holography (FINCH) which was developed based on the self-interference principle [23]. Alternative versions of incoherent holography systems called self-interference digital holography (SIDH) techniques, were developed and implemented for applications of adaptive optics [28,32]. A generalized version of the self-interference incoherent digital holography technique called coded aperture correlation holography (COACH) has been developed [46]. In this survey, we review various designs and applications of the COACH systems and other close techniques.
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