Range of Polygon Threshold and Binary Threshold

[kXborg]

Hi @MhLiao,

I have been experimenting with the values of Binary Threshold and Polygon Threshold. In OpenCV Docs the following is mentioned.

Configurable parameters:

 - (float) binaryThreshold - The threshold of the binary map. It is usually set to 0.3.
 - (float) polygonThreshold - The threshold of text polygons. It is usually set to 0.5, 0.6, and 0.7. Default is 0.5f

While checking, I found that binaryThreshold = 1.1 and polygonThresh = 1.2 combination does not work.

What is the exact range? Are there any conditions?