-
公开(公告)号：US20220326078A1
公开(公告)日：2022-10-13
申请号：US17608127
申请日：2020-09-08
发明人： Xingchao YU , Zhe REN , Bin GUO , Jinbiao HUANG
摘要： A method and device for restoring and reconstructing a light source spectrum based on a hyperspectral image are provided. A hyperspectral image is processed to obtain a first maximum spectrum. The first maximum spectrum is matched with a light source spectral basis vector set in a light source spectrum dictionary, and a linear decomposition is performed to obtain a dictionary set. The maximum value of each waveband is obtained and iterative approximation is performed. Therefore, it can quickly restore the spectrum of the light source of the shooting environment from a single hyperspectral image using a relatively simple calculation process, and can still achieve a good restoration effect for monochromatic image scenes or image scenes with few colors, even close to the real light source spectrum. After the light source spectrum is obtained, this information can be further utilized for different kinds of applications.
-
公开(公告)号：US20220187127A1
公开(公告)日：2022-06-16
申请号：US17425644
申请日：2020-07-09
发明人： Mingliang ZHEN , Pingping YU , Bin GUO , Jinbiao HUANG
摘要： A system for testing a spectral response speed of a tunable filter is disclosed, which includes a collimating light source, a beam splitting element, a focusing lens, and an image recording device of light spot position arranged successively. The tunable filter is disposed between the collimating light source and the beam splitting element and configured to be continuously tuned within a certain wavelength range during testing. The beam splitting element is used to form light beams of different wavelength bands passing through the tunable filter into diffracted beams or refracted beams corresponding to different wavelength bands. The focusing lens is used to perform focusing. The image recording device of light spot position is used to record change information about positions where the diffracted beams or refracted beams corresponding to different wavelength bands are imaged.
-
3.发明公开公开(公告)号：US20230324670A1
公开(公告)日：2023-10-12
申请号：US18042576
申请日：2020-08-24
发明人： BIN GUO , Jinbiao HUANG
CPC分类号： G02B26/001 , G02B26/0858
摘要： A tunable Fabry-Perot cavity device having movable mirror is disclosed, said movable mirror being provided opposite another mirror, said movable mirror and said another mirror being bonded to each other at the periphery to form a Fabry-Perot cavity between said mirror, said movable mirror comprising a silicon film inlaid with glass, a central region of said silicon film being inlaid with glass to form a light transmitting region, surface of the light-transmitting region facing the Fabry-Perot cavity is provided with mirror material, transition region of the silicon film between bonded periphery region and the central region is inlaid with glass to form an elastic structure. Since the Young's modulus of silicon is much higher than that of glass, the silicon film inlaid with glass can have good mechanical strength and stable elastic coefficient and free from being affected by stress.
-
公开(公告)号：US20220207856A1
公开(公告)日：2022-06-30
申请号：US17603318
申请日：2020-03-30
发明人： Min LIU , Zhe REN , Xingchao YU , Jinbiao HUANG , Bin GUO
摘要： A method for extracting spectral information of a substance under test includes: identifying a pixel region A(x, y) occupied by an object under test from a hyperspectral image acquired; extracting a specular reflection region Aq and a diffuse reflection region Ar from the pixel region A(x, y), and calculating a representative spectrum Iq(ω) of the specular reflection region Aq and a representative spectrum Ir(ω) of the diffuse reflection region Ar, respectively; by comparing each element in the representative spectrum Iq(ω) of the specular reflection region Aq with each element in the representative spectrum Ir(ω) of the diffuse reflection region Ar, separating information of a light source from spectral information of the object to obtain a first spectral invariant C(ω). This method does not require additional spectral information of the light source, which improves the analysis efficiency.
-
-
-
搜索结果
4 条记录 (耗时 0.014 秒)
