Optical-computing-based visualized computing ghost imaging system and imaging method

Abstract

The invention relates to an optical-computing-based visualized computing ghost imaging system and imaging method. The imaging system comprises a structured light spot emission source. Light emitted by the structured light spot emission source is split into two beams by a beam splitter; the beam I is irradiated to a to-be-imaged object and then the beam I is received by a barrel detector; and the beam II is processed by an external modulator and an optical information processing system for band-pass filter image enhancement processing and then the processed light is imaged to a low-speed light-sensing object. A signal output terminal of the barrel detector is connected to an internal modulator or the external modulator selectively by a double-throw switch; the signal is loaded to a control unit of the structured light spot emission source by the internal modulator or the signal is loaded to the beam II directly by the external modulator. According to the invention, with the internal modulation and external modulation processes, optical computing is introduced into ghost imaging to replace computer processing; and because the low-speed light-sensing object carries out time integral calculation automatically during observation, the average calculation of the traditional ghost imaging computer system is replaced, so that visualized ghost imaging of the to-be-imaged object is obtained at a high speed.

Description

technical field [0001] The invention relates to the field of imaging detection, in particular to a visual calculation ghost imaging system and imaging method based on light calculation. Background technique [0002] The optical ghost imaging technology realizes the restoration of the spatial information of the object to be measured through the coincidence detection of two-way optical signals. Its characteristic is that the signal beam (signal beam) containing object information is detected by a barrel detector without spatial resolution; the idler beam (idler beam) containing only the intensity distribution information of the light source does not pass through the object, but is directly detected by an area array with spatial resolution Detector to detect, such as CCD and so on. Therefore, the image of the object cannot be obtained through any signal of the two detectors corresponding to the dual optical path, but the image of the object can be obtained after matching the s...

AI Technical Summary

Problems solved by technology

[0003] Existing ghost imaging technologies require a large amount of data collection at the front end and computer processing at the back end, which consumes a lot of resources, and the imaging speed is slow and the system is complex

It often takes a certain amount of processing time from acquisition to imaging, and at the same time it cannot be directly visualized. It needs to go through the process of photoelectric conversion and then electro-optical conversion.

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