LIGHT SOURCE SPECTRUM AND MULTISPECTRAL REFLECTIVITY IMAGE ACQUISITION METHODS AND APPARATUSES, AND ELECTRONIC DEVICE

WIPO Patent Application WO/2022/247840

A1

Light source spectrum and multispectral reflectivity image acquisition methods and apparatuses, and an electronic device. The light source spectrum acquisition method comprises: acquiring a multispectral image, and determining a multispectral response value of each pixel in the multispectral image (S110); reconstructing an RGB image according to the multispectral image (S120); converting the RGB image into a grayscale image (S130); and determining a target area, a grayscale value of which is less than a threshold value or is less than or equal to a threshold value, in the grayscale image, and calculating a light source spectrum response value according to multispectral response values of respective pixels in the multispectral image that correspond to the target area (S140). Thus, the estimation precision of an ambient light spectrum can be improved.

JPH07122610	INDUSTRIAL APPLICABILITY: A photoelectric device for determining a substance in a sample that absorbs light in a spectrally different state.
WO/2021/042215	METHODS AND APPARATUS FOR NEAR INFRARED SPECTROSCOPY
JPS5666738	SPECTROMETER FOR GAS MEASUREMENT

LIU MIN (CN)
GONG BINGBING (CN)
SHI SHAOGUANG (CN)
HUANG ZEJIA (CN)
ZHANG DINGJUN (CN)
JIANG LONGYE (CN)

PCT/CN2022/094817

December 01, 2022

May 25, 2022

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ORBBEC INC (CN)

G01N21/25; G01N21/84; G06T5/00; G06T7/136

CN113340817A	2021-09-03
CN113340816A	2021-09-03
CN113297977A	2021-08-24
CN110046564A	2019-07-23
CN111368587A	2020-07-03
CN103268499A	2013-08-28
CN103234915A	2013-08-07
US20080046217A1	2008-02-21

SHENZHEN HUNS INTELLECTUAL PROPERTY (CN)

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