# Revision history [back]

### How can I find defect points?

I want to find gand and palm. I used below algorithm :

1- Get a frame from webcam 2- Convert to grayscale, apply blur and threshold method. 3- Use canny method and findContours 4- Find the contour which has max area, draw it 5- Find and draw convex hull 6- Apply convexityDefects

My result is below : I wanted to find palm center. For this, I used below code after defects was found.

It calculates average of defects point's coordinate. But the result is not good bacause the defect points aren't found regularly. How can I get better result?

int x = 0,y = 0;
for(int i = 0; i < defects.size(); i++) {

Point p1 = contours[maxAreaIndex].at(defects[i].val);
x += p1.x;
y += p1.y;
}

// draw a circle for palm center
circle(drawing, Point(x/defects.size(), y/defects.size()), 3, Scalar( 0, 255, 0 ), 3);


### How can I find defect points?

I want to find gand hand and palm. I used below algorithm :

1- Get a frame from webcam 2- Convert to grayscale, apply blur and threshold method. 3- Use canny method and findContours 4- Find the contour which has max area, draw it 5- Find and draw convex hull 6- Apply convexityDefects

My result is below : I wanted to find palm center. For this, I used below code after defects was found.

It calculates average of defects point's coordinate. But the result is not good bacause the defect points aren't found regularly. How can I get better result?

int x = 0,y = 0;
for(int i = 0; i < defects.size(); i++) {

Point p1 = contours[maxAreaIndex].at(defects[i].val);
x += p1.x;
y += p1.y;
}

// draw a circle for palm center
circle(drawing, Point(x/defects.size(), y/defects.size()), 3, Scalar( 0, 255, 0 ), 3); 3 retagged sturkmen 6772 ●3 ●48 ●79 https://github.com/stu...

### How can I find defect points?

I want to find hand and palm. I used below algorithm :

1- Get a frame from webcam 2- Convert to grayscale, apply blur and threshold method. 3- Use canny method and findContours 4- Find the contour which has max area, draw it 5- Find and draw convex hull 6- Apply convexityDefects

My result is below : I wanted to find palm center. For this, I used below code after defects was found.

It calculates average of defects point's coordinate. But the result is not good bacause the defect points aren't found regularly. How can I get better result?

int x = 0,y = 0;
for(int i = 0; i < defects.size(); i++) {

Point p1 = contours[maxAreaIndex].at(defects[i].val);
x += p1.x;
y += p1.y;
}

// draw a circle for palm center
circle(drawing, Point(x/defects.size(), y/defects.size()), 3, Scalar( 0, 255, 0 ), 3);