Semi-Automated Optical Heartbeat Analysis

Features

Platform

 

SOHA (Original Version)

SOHA Version 3

Requires MatLab

 

 

Stand alone

 

 

Analyzable Files

 

SOHA (Original Version)

SOHA Version 3

Black & White *.avi files

 

 

*.cxd files (HCImage)

 

 

Timing

 

SOHA (Original Version)

SOHA Version 3

Based on average fps (.avi files)

 

 

Based on each frame's time stamp (.cxd files)

 

 

Noise Reduction

 

SOHA (Original Version)

SOHA Version 3

Threshold setting

 

 

High and low pass filters for average darkness algorithm

 

 

High and low pass filters for pixel-by-pixel algorithm

 

 

Selectable ROI eliminates non-cardiac tissue from analysis

 

 

Interval Identification

 

SOHA (Original Version)

SOHA Version 3

Automatic, modifiable by average darkness algorithm

 

 

Ability to correct individual intervals if needed

 

 

Adjustable threshold for ignoring periods of no movement (minimum interval)

 

 

New Phase Analysis

 

SOHA (Original Version)

SOHA Version 3

Systolic interval precisely parsed into contraction and relaxation phases

 

 

Diameter Measurements

 

SOHA (Original Version)

SOHA Version 3

Two set of vertical measurements

 

 

Selectable vertical and horizontal measurements

 

 

.avi Movie Output with Movement Highlighted

 

SOHA (Original Version)

SOHA Version 3

.avi movies to .avi output

 

 

.cxd files to .avi output

 

 

Adjustable movement threshold (0-100%)

 

 

New Output

 

SOHA (Original Version)

SOHA Version 3

Contraction Phase

 

 

Relaxation Phase

 

 

Isometric Phase

 

 

Automatic Detection of Unusually Long Intervals