Non-invasive biofeedback system

Abstract

A method, system, and computer program for non-invasively monitoring a physiological parameter and providing biofeedback. The method, system, and computer program provide for the non-invasive detection of a physiological parameter by detecting changes in color channel values of a user in a live video feed and presenting biofeedback to the user indicating the relative position of the physiological parameter to an optimal range.

1 . A method for non-invasively monitoring a user under a workload, the method comprising the steps of:
 collecting information about a user for determining said user's optimal range;   tracking a facial area of the user in a live video feed;   detecting a first set of at least two channel values from the facial area of the user in each frame of the live video feed;   making corrective adjustments for user motion and changes in lighting conditions on the first set of at least two channel values, wherein the results of the correction produce a second set of at least two channel values corresponding to the first set of at least two channel values, such that a total of at least four channel values are associated to each frame of the live video feed;   converting each of the at least four channel values associated to each frame of the live video feed into a frequency wave pattern;   selecting a single channel amongst the at least four channel values, wherein said single channel provides the strongest indicia for physiological parameter detection;   processing the single channel for detecting a physiological parameter; and   presenting a biofeedback to the user on a display, wherein the biofeedback notifies the user at least where the detected physiological parameter is relative to the user's optimal range.   
     
     
         2 . The method of  claim 1 , further comprising the step of resizing the resolution of video frames for faster processing. 
     
     
         3 . The method of  claim 1 , wherein the user's optimal range is a preferred physiological parameter determined by at least the user's minimum heart rate value and the user's maximum heart rate value. 
     
     
         4 . The method of  claim 1 , wherein the facial area tracking step utilizes skin-color detection. 
     
     
         5 . The method of  claim 1 , wherein the facial area tracking step utilizes Haar-like feature detection. 
     
     
         6 . The method of  claim 1  wherein the physiological parameter is heart rate. 
     
     
         7 . The method of  claim 1 , wherein the corrective adjustment step is an independent component analysis. 
     
     
         8 . The method of  claim 1 , wherein the conversion into a frequency wave pattern step is a Fast Fourier Transformation. 
     
     
         9 . The method of  claim 1 , wherein the selecting of a single channel step selects a frequency spike indicative of a highest ratio of peak power over a cumulative power. 
     
     
         10 . The method of  claim 1 , wherein the selecting of a single channel step selects a frequency spike where a ratio between a highest spike and a second highest spike is maximized. 
     
     
         11 . The method of  claim 1 , wherein the selecting of a single channel step is a most common frequency rate produced by a majority number of channels. 
     
     
         12 . The method of  claim 1 , wherein the video feed is captured utilizing a webcam or mobile device camera. 
     
     
         13 . The method of  claim 1 , wherein the biofeedback comprises at least one of heart rate, respiration, oxygen saturation, and lactate levels. 
     
     
         14 . A non-transitory computer-readable medium having a computer program stored thereon for execution by a processor, the computer program operable to non-invasively monitor a user under a workload, wherein execution of the computer program by the processor performs the steps of:
 collecting information about a user for determining said user's optimal range;   tracking a facial area of the user in a live video feed;   detecting a first set of at least two channel values from the facial area of the user in each frame of the live video feed;   making corrective adjustments for user motion and changes in lighting conditions on the first set of at least two channel values, wherein the results of the correction produce a second set of at least two channel values corresponding to the first set of at least two channel values, such that a total of at least four channel values are associated to each frame of the live video feed;   converting each of the at least four channel values associated to each frame of the live video feed into a frequency wave pattern;   selecting a single channel amongst the at least four channel values, wherein said single channel provides the strongest indicia for physiological parameter detection;   processing the single channel for detecting a physiological parameter; and   presenting a biofeedback to the user on a display, wherein the biofeedback notifies the user at least where the detected physiological parameter is relative to the user's optimal range.   
     
     
         15 . The non-transitory computer-readable medium of  claim 14 , further comprising the step of resizing the resolution of video frames for faster processing. 
     
     
         16 . The non-transitory computer-readable medium of  claim 14 , wherein the optimal range is preferred physiological parameter having a minimum heart rate value and maximum heart rate value. 
     
     
         17 . The non-transitory computer-readable medium of  claim 14 , wherein the facial area tracking step utilizes skin-color detection. 
     
     
         18 . The non-transitory computer-readable medium of  claim 14 , wherein the facial area tracking step utilizes Haar-like feature detection. 
     
     
         19 . The non-transitory computer-readable medium of  claim 14  wherein the physiological parameter is heart rate. 
     
     
         20 . The non-transitory computer-readable medium of  claim 14 , wherein the corrective adjustment step is an independent component analysis. 
     
     
         21 . The non-transitory computer-readable medium of  claim 14 , wherein the conversion into a frequency wave pattern step is a Fast Fourier Transformation. 
     
     
         22 . The non-transitory computer-readable medium of  claim 14 , wherein the selecting of a single channel step selects a frequency spike indicative of a highest ratio of peak power over a cumulative power. 
     
     
         23 . The non-transitory computer-readable medium of  claim 14 , wherein the selecting of a single channel step selects a frequency spike where a ratio between a highest spike and a second highest spike is maximized. 
     
     
         24 . The non-transitory computer-readable medium of  claim 14 , wherein the selecting of a single channel step is a most common frequency rate produced by a majority number of channels. 
     
     
         25 . The non-transitory computer-readable medium of  claim 14 , wherein the video feed is captured utilizing a webcam or mobile device camera. 
     
     
         26 . The non-transitory computer-readable medium of  claim 14 , wherein the biofeedback comprises at least one of heart rate, respiration, oxygen saturation, and lactate levels. 
     
     
         27 . A system for non-invasively monitoring a user under a workload, the system comprising:
 at least one video camera mounted in or on a housing and operably connected to a computing module, said at least one video camera oriented towards a user and operable to capture a live video feed of the user;   a computing module with a processor and a memory, said computing module mounted within the housing and configured to:
 store optimal range values of a user, wherein the optimal range values are the lower and upper heart rate boundaries defined by a preferred physiological parameter determined by at least a user's resting heart rate and maximum heart rate; 
 receive the live video feed of the user from the at least one video camera; 
 detect changes in channel values extracted from the live video feed of the user; and 
 calculate a physiological parameter from the changes in channel values; 
   a display monitor mounted in or on the housing and configured to display a biofeedback, wherein the biofeedback indicates at least where the physiological parameter value is relative to the optimal range values of the user.   
     
     
         28 . The system of  claim 27 , wherein the housing is a mobile computing device housing. 
     
     
         29 . The system of  claim 27 , wherein the computing module is configured to automatically present on the display instructions to increase or decrease physical intensity levels based on the relative position of the physiological parameter to the optimal range of the user. 
     
     
         30 . The system of  claim 27 , wherein the biofeedback comprises at least one of heart rate, respiration, oxygen saturation, and lactate levels.