Are there any formal papers on the definitions of X1, X2, Y1, Y2? I am not a cardiologist so I was not exactly sure what they represented. I've only seen them used in https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4694312/, so the lack of use of those values raised a doubt.
Also, in VolumeTracings.csv, assuming that X1, X2, Y1, Y2 are properties of the heart that would vary over the course of the video, why are there different values of those for the same frame in the dataset provided by Stanford? For example:
FileName,X1,Y1,X2,Y2,Frame
0X100009310A3BD7FC.avi,51.26041667,15.34895833,64.93229167,69.125,46
0X100009310A3BD7FC.avi,50.03761083,17.16784126,53.36722189,16.32132997,46
Are there any formal papers on the definitions of X1, X2, Y1, Y2? I am not a cardiologist so I was not exactly sure what they represented. I've only seen them used in https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4694312/, so the lack of use of those values raised a doubt.
Also, in VolumeTracings.csv, assuming that X1, X2, Y1, Y2 are properties of the heart that would vary over the course of the video, why are there different values of those for the same frame in the dataset provided by Stanford? For example:
FileName,X1,Y1,X2,Y2,Frame
0X100009310A3BD7FC.avi,51.26041667,15.34895833,64.93229167,69.125,46
0X100009310A3BD7FC.avi,50.03761083,17.16784126,53.36722189,16.32132997,46