I have studied a lot of example about face detection and also I have detected the eye in iPhone using CIDetector
and HaarCascade_eye.xml
. But I want to detect the pupils of eye and want to measure the distance between pupils. Please guide me something so that I could do that.
To calculate distance between two points using the following formula:
This will get center points of the two eyes (as detected by CIDetector) and compare their locations to output the measurements you're looking for.
if(faceFeature.hasLeftEyePosition && faceFeature.hasRightEyePosition)
{
CGPoint leftEyeCenter = faceFeature.leftEyePosition;
CGPoint rightEyeCenter = faceFeature.rightEyePosition;
float simpleDistance = rightEyeCenter.x - leftEyeCenter.x;
//This finds the distance simply by comparing the x coordinates of the two pupils
float complexDistance = fabsf(sqrtf(powf(leftEyeCenter.y - rightEyeCenter.y, 2) + powf(rightEyeCenter.x - leftEyeCenter.x, 2)));
//This will return the diagonal distance between the two pupils allowing for greater distance if the pupils are not perfectly level.
}
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