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Light scattering imaging is expected to shock the perspective

by:FOT     2020-07-18
Scattered light imaging is expected to shock the perspective

jian-ying zhou group: scattered light imaging is expected to shock the perspective

takeaway: state key laboratory of optoelectronic materials and technology of zhongshan university professor jian-ying zhou team developed a reverse recovery imaging experiment of new technologies, adopt unique optical system design is found in the chaos and decipher the secret key of the original image, combined with multiple wavelengths of light field separation, realize the real-time color imaging of large optical field.

state key laboratory of optoelectronic materials and technology of zhongshan university professor jian-ying zhou team developed a reverse recovery imaging experiment of new technologies, adopt unique optical system design is found in the chaos and decipher the secret key of the original image, combined with the separation of multiwavelength optical field, has realized the real-time color imaging optical field.

light scattering optical transmission and lower limit and the main factors of the optical imaging effect. For example, the fog haze of light scattering brings to the highway traffic safety concerns; Smoke to light scattering makes the scene of the fire escape, rescue the difficulties; Opaque brings great challenges to the medical diagnosis and treatment of biological tissue.

if we can eliminate the negative influence of scattering, turn fraud into the profit and make proper use of the light scattering of information, so these problems will be readily solved. People have been looking forward to have efficient perspective imaging technology - — Will be in the civil, medical, national security, and many other fields play a bigger application value, and the technology also has important scientific significance. In recent years, the research of this field and explore the progress, science and the application field of optical physics has become important and hot research topic.

recently, state key laboratory of optoelectronic materials and technology of zhongshan university professor jian-ying zhou team developed a reverse recovery imaging experiment of new technology, effective use of the diffuse light signal through the scatterer, realized the big optical field real-time color image reconstruction. The results of the study are published recently in the Scientific Report [6, 32696 ( 2016). ].

surface scattering process appears to be chaotic, but imaging information just be hidden in the speckle of chaos. In 1988, scientists found that thin scatterer is a special kind of nature - — 'Memory effect', and at the same time reveals the scattering imaging process is the convolution of point spread function and object. Point spread function (PSF), also known as the response function of the system, which to some extent contains information scatterer itself, in fact be interpreted from the chaos and the secret key of the original image.

jian-ying zhou professor team using convolution algorithm developed the reverse recovery imaging experiments in new technologies, adopt unique optical system design, realized the optical system the expansion of the field; Wiener filtering at the same time the introduction of graphics image processor to realize the millisecond level high quality imaging, so as to achieve the real-time requirements of transmission optical imaging. Further, through the multiple wavelength optical field separation, processing, and composite, the optical system also implements the recovery of hidden object color information, thus has to hide objects spectrum 'fingerprint' of material structure characteristics analysis ability. The figure below shows the perspective color image restoration technique in the laboratory environment and the experimental results of real-time dynamic imaging.

 surface scattering process appears to be chaotic, but imaging information just be hidden in the speckle of chaos. In 1988, scientists found that thin scatterer is a special kind of nature - — 'Memory effect', and at the same time reveals the scattering imaging process is the convolution of point spread function and object. Point spread function (PSF), also known as the response function of the system, which to some extent contains information scatterer itself, in fact be interpreted from the chaos and the secret key of the original image.

jian-ying zhou professor team using convolution algorithm developed the reverse recovery imaging experiments in new technologies, adopt unique optical system design, realized the optical system the expansion of the field; Wiener filtering at the same time the introduction of graphics image processor to realize the millisecond level high quality imaging, so as to achieve the real-time requirements of transmission optical imaging. Further, through the multiple wavelength optical field separation, processing, and composite, the optical system also implements the recovery of hidden object color information, thus has to hide objects spectrum 'fingerprint' of material structure characteristics analysis ability. The figure below shows the perspective color image restoration technique in the laboratory environment and the experimental results of real-time dynamic imaging.

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