Title:
非接触血管解析装置
Document Type and Number:
Japanese Patent JP7274803
Kind Code:
B2
Abstract:
Provided is a non-contact blood vessel analyzer capable of easily analyzing the state of a blood vessel in a non-contact manner without limiting a place. This non-contact blood vessel analyzer 1 includes an image acquisition device 2 which acquires an image 2im which is a moving image or successive still images of a blood vessel, and an image processing device 3 which detects a beat and a thrill from temporal change of brightness or luminance of the image 2im. The image processing device 3 can detect, as the beat, a largest value vicinity area in a power spectrum of the brightness or the luminance of the image 2im, use a frequency at which power value is the largest in the power spectrum of the brightness or the luminance of the image 2im as a heart rate, and detect, as the thrill, a maximum value vicinity area when a maximum value increases temporarily after the maximum value decreases as the frequency increases in the power spectrum of the brightness or the luminance of the image 2im.
Inventors:
Hironori Shimazaki
Yoshifumi Kawakubo
Atsushi Mitsufuji
Yuhei Hayashi
Shinya Hatanabe
Yoshifumi Kawakubo
Atsushi Mitsufuji
Yuhei Hayashi
Shinya Hatanabe
Application Number:
JP2022560749A
Publication Date:
May 17, 2023
Filing Date:
October 29, 2021
Export Citation:
Assignee:
Ray Mac Co., Ltd.
International Classes:
A61B5/026; A61B5/0245
Domestic Patent References:
| JP2019170407A | ||||
| JP3159768U | ||||
| JP2005328941A |
Foreign References:
| WO2014038077A1 | ||||
| WO2018179150A1 | ||||
| WO2019188768A1 | ||||
| WO2016207951A1 |
Attorney, Agent or Firm:
Tsuneo Fujikawa