Lossless clear reconstruction method for optical image under micro-nano scale
An optical image, micro-nano technology, used in image enhancement, image analysis, image data processing, etc., can solve the problems of information loss, lossy sharpening methods, non-blind deconvolution blurring, etc., to avoid the calculation process, realize The effect of precise observation
Active Publication Date: 2018-08-03
NORTHEASTERN UNIV
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However, in practical applications, non-blind deconvolution is affected by blur and noise, and there is a problem of information loss, that is, these clearing methods are lossy and difficult to use in high-precision observations
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[0037] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0038] In this embodiment, the non-destructive and clear reconstruction method of optical images at the micro-nano scale is used for experiments on standard nano-grids. The standard grids are 500nm high and 1500nm wide, and the error is within 3%. In this embodiment, a HIROX-7700 microscope is used as a camera, which can magnify the standard nanogrid by 7000 times.
[0039] A lossless and clear reconstruction method for optical images at the micro-nano scale, such as figure 1 shown, including the following steps:
[0040] Step 1: The same camera, when the focal length f=0.357mm, the image distance R=0.399mm, and the numerical aperture D=2, collect the first image E 1 (x...
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The invention provides a lossless clear reconstruction method for an optical image under micro-nano scale, and relates to the technical field of digital image processing. The method comprises the steps of firstly obtaining two images by changing a distance between a video camera and an object to serve as a source image and a target image; secondly calculating optical energy transmission time fromthe source image and a clear image corresponding to the target image to the target image, thereby obtaining the clear image; and finally calculating average gradients and image entropies of the targetimage and the clear image to measure the definition of the reconstructed clear image. According to the lossless clear reconstruction method for the optical image under the micro-nano scale, providedby the invention, the clear image is reconstructed dynamically and losslessly by applying an optical energy transmission equation, so that a conventional complex calculation process for reconstructingthe clear image by utilizing a deconvolution solving method is avoided, accurate observation of target features under micro-nano vision is realized, and a theoretical research foundation is providedfor research of image recovery in the micro-nano vision.
Description
technical field [0001] The invention relates to the technical field of digital image processing, in particular to a method for lossless and clear reconstruction of optical images at the micro-nano scale. Background technique [0002] Optical observation has the advantages of real-time, non-destructive to samples, and strong adaptability to the environment. Therefore, it is widely used in the fields of microelectronics, semiconductors, new materials, biomedicine, and precision manufacturing. However, in micro-nano-scale vision, the depth of field of high-power optical microscopes is very short, and it is easy to appear blurred images. The blurring of the image to be observed greatly affects the accurate extraction of target features under micro-nano vision. Therefore, the study of non-destructive and clear restoration methods for blurred optical images at the micro-nano scale is of great importance to the promotion of micro-nano observation technology and related research. T...
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IPC IPC(8): G06T5/50G06T5/00G06T7/00
CPCG06T5/50G06T7/0002G06T2207/30168G06T2207/20221G06T2207/10061G06T5/00
Inventor 魏阳杰刘永俊王义
Owner NORTHEASTERN UNIV