-
公开(公告)号：US11788888B2
公开(公告)日：2023-10-17
申请号：US17608127
申请日：2020-09-08
发明人： Xingchao Yu , Zhe Ren , Bin Guo , Jinbiao Huang
CPC分类号： G01J3/027 , G01J3/2823 , G06T5/003 , G06T5/007 , G06T2207/10036
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：US12106543B2
公开(公告)日：2024-10-01
申请号：US17603318
申请日：2020-03-30
发明人： Min Liu , Zhe Ren , Xingchao Yu , Jinbiao Huang , Bin Guo
IPC分类号： G06K9/00 , G01J3/28 , G01N21/25 , G01N21/27 , G01N21/31 , G01N21/55 , G06T7/90 , G06V10/143 , G06V10/25 , G06V10/58 , H04N5/30 , H04N23/10
CPC分类号： G06V10/58 , G01J3/2803 , G01N21/25 , G01N21/27 , G01N21/31 , G01N21/55 , G06T7/90 , G06V10/143 , G06V10/25 , H04N5/30 , H04N23/10 , G01J2003/2826 , G01N2021/556 , G01N2021/557
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
2 条记录 (耗时 0.012 秒)
