Problem calculating DevStd for Burned or reflective Image

[GoogleCodeExporter]

Hi, 
i have a problem with StdDev function and "Burned" or "Reflective" Image. I use 
this function to calculate the point of focus for images captured with a 
camera. 
When the image is burned or reflecting the values ​​of standard deviation, 
moving the optical device that adjusts the focus, taking contrasting values 
​​of the area burned because that changes its size.
n general, when the image is focused by the standard deviation has the highest 
value. With these images does not work that way. It seems that the object 
reflecting increases reflecting the area and damaging the calculation of 
standard deviation.

I attach 3 images:
- First image on Focus with STdDev = 110
- Second Image Stddev =  114
- Third Image Sttdev = 141

Thanks and Best Regards
Andrew

Original issue reported on code.google.com by stacch...@gmail.com on 6 Oct 2011 at 9:19

Attachments:

• 110.bmp
• 114.bmp
• 141.bmp

[GoogleCodeExporter]

I actually the sum of the deviations of the 3 channels

Original comment by stacch...@gmail.com on 6 Oct 2011 at 9:20

[GoogleCodeExporter]

Is it a question or a bug report?

If it is a question, then the ticket will rejected. The tracking system is 
aimed for bug reports and feature requests. It not for discussions. There is a 
forum for this.

If it a bug request, then it is missing information. What is the version of the 
framework in use? How do you calculate std.dev.?

Original comment by andrew.k...@gmail.com on 6 Oct 2011 at 7:54

• Changed state: Pending

[GoogleCodeExporter]

Original comment by andrew.k...@gmail.com on 10 Oct 2011 at 7:44

• Changed state: Invalid