Rapid super-resolution compression digital holographic microimaging system and method
A digital holographic microscope and imaging system technology, applied in the field of image processing, can solve the problems of cumbersome operation steps and long time-consuming image acquisition methods
Active Publication Date: 2021-04-09
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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[0005] The purpose of the present invention is to solve the problems of long time-consuming and cumbersome operation steps in the image acquisition method in the prior art, and propose a fast super-resolution compression digital holographic microscopic imaging system and method
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Embodiment 1
[0028] Such as figure 1 As shown, this embodiment proposes a fast super-resolution compression digital holographic microscopic imaging system (hereinafter referred to as the imaging system or system for short), which is used to perform super-resolution imaging on the tested sample, including a laser 1 placed in optical path connection, an expansion Beam collimation unit, first beam splitting cube 5, first spatial light modulator 4, first microscopic objective lens 6, second microscopic objective lens 8, second beam splitting cube 11, second spatial light modulator 9, image Sensor 12; the light emitted by the laser 1 is collimated by the beam expander and collimation unit to become a parallel beam, and the parallel beam passes through the first beam splitting cube 5 and is projected onto the first spatial light modulator 4 to be modulated into structured light. The structured light of the micro-objective lens 6 passes through the second micro-objective lens 8 and the second bea...
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The invention discloses a rapid super-resolution compression digital holographic microimaging system and method. According to the system and method, a structural pattern is loaded through a first spatial light modulator; a light beam emitted by a laser irradiates on the first spatial light modulator after being subjected to beam expansion and collimation, so as to form linear structured light; the linear structured light passes through a first microscope objective and then irradiates the surface of a measured sample; the measured sample is amplified by a second microscope objective after being modulated by the structured light and then irradiates a second spatial light modulator to perform sampling, and then a hologram is formed on the surface of an image sensor and recorded. In one exposure period of the image sensor, a plurality of object images modulated by the structured light are sampled; a plurality of sampled images are compressed and imaged in the same image; image reconstruction is performed through a compressed sensing algorithm and a structured light reconstruction algorithm, so that a plurality of holograms illuminated by the structured light can be imaged in an extremely short time, and the problems of long consumed time and complicated operation steps of a traditional image acquisition method are avoided.
Description
technical field [0001] The invention relates to the field of image processing, in particular to a fast super-resolution compressed digital holographic microscopic imaging system and method. Background technique [0002] Optical imaging is a very common phenomenon that has penetrated into every aspect of our lives and is inseparable from our lives. Digital holography is a typical optical imaging technology, which is based on the interference of light and records the information of three-dimensional objects through holograms. When holographic imaging technology reconstructs the original image, it can reconstruct the amplitude information and phase information of the object at the same time, which is a typical advantage of holographic technology that distinguishes it from other imaging technologies. At first, the recording of holographic images depends on holographic film, which needs to go through developing, fixing and other processes. Later, photoelectric sensing devices w...
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IPC IPC(8): G02B27/58G03H1/12G03H1/00G02B21/36G01N21/45G01J9/00G01B9/04
CPCG02B27/58G03H1/12G03H1/0005G02B21/361G01B9/04G01J9/00G01N21/453G03H2001/005
Inventor 苏萍李英杰王钦骅马建设
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV