Estimating physiological parameters

摘要

A physiological parameter measurement device (100) comprising a processor (102) and a video processing module (110) coupled to the processor to divide (202) each of a plurality of frames of a video into a plurality of blocks, where the video is of a body part of a subject whose physiological parameter is to be determined. The video processing module further is to select a block (206) having highest peak signal to noise ratio (PSNR) from amongst the plurality of blocks. Further, the video processing module is to extract (208) a photoplethysmogram (PPG) signal from the video based on a block identifier associated with the block. The physiological parameter measurement device further comprises a signal enhancement module coupled to the processor, to process the PPG signal to obtain (210) an enhanced PPG signal for determining a value of the physiological parameter for the subject. P141278/9843605v1 DIVIDE EACH OF A PLURALITY OF FRAMES OF VIDEO OF A SUBJECT WHOSE PHYSIOLOGICAL PARAMETER IS TO BE ESTIMATED INTO A PLURALITY OF BLOCKS COMPUTE A PSNR FOR EACH OF THE PLURALITY OF BLOCKS SELECT, FROM AMONG THE PLURALITY OF BLOCKS, A BLOCK HAVING HIGHEST PSNR EXTRACT A PPG SIGNAL FROM THE VIDEO BASED ON A BLOCK IDENTIFIER ASSOCIATED WITH THE SELECTED BLOCK ENHANCE THE PPG SIGNAL Figure 2 P141278/9844051vl