Apparatus based on image for detecting heart rate activity and method thereof

摘要

An apparatus and method based on image for detecting heart rate activity is provided. The method includes: obtaining a plurality of color images; based on a complexion target condition, defining a target region; performing color composition analysis on the target region to obtain red channel signal, green channel signal and blue channel signal, respectively; performing independent component analysis on separate red, green and blue channel signals to obtain separate first independent component signal, second independent component signal and third independent component signal; performing frequency domain transform, signal energy computation and signal optimization processes on separate first, second and third independent component signals to obtain a filter signal, comparing filter signal based on a pre-set condition to determine if target region belonging to a human, and performing a physiological information analysis.

主权项

1. An image-based apparatus for detecting heart rate activity, comprising:
a detecting unit, configured to obtain a plurality of color images of a monitored target; a memory unit, coupled to the detecting unit, configured to store the color images obtained by the detecting unit; and a processor, coupled to the memory unit, wherein the processor further comprising: a target area defining module, configured to execute a target area detection process targeting the color images, wherein the target area detection process performing computation analysis on the color images to define a target area in the monitored target in the color image according to a predefined skin color target condition; a color image composition analysis module, configured to perform a color image composition analysis on the target area, wherein the color image composition analysis performing statistic computation for a red channel, a green channel and a blue channel of the target area to obtain a red channel signal, a green channel signal and a blue channel signal; an independent component analysis module, based on an independent component analysis method, configured to perform computation on the red channel signal, the green channel signal and the blue channel signal to obtain a first independent component signal, a second independent component signal, and a third independent component signal; a signal processing module, configured to perform a frequency domain transform process, a signal energy computation process and a signal fitness process for the first independent component signal, the second independent component signal, and the third independent component signal to obtain a filtered signal; a comparison module, configured to compare the filtered signal with at least a pre-defined condition to confirm the monitored target as a real human and provide an analysis instruction accordingly; and a physiological information analysis module, based on the analysis instruction, configured to execute a physiological information analysis process, wherein the signal energy computation process comprises the Euclidean norm.