HoughlinesP with openCL is not as fast as HoughLines
I use openCL modules and find Houghlines with openCL is about 10 times faster than that with CPU, but HoughLinesP with openCL is only 2 times faster. Is there any people test HoughLineP with openCL
Did you measure the calculation time of HoughLines against HoughLinesP on CPU and GPU? The more the code of a function can be parallelisized the more you benefit from GPU calculation. So I guess that the HoughLinesP can't be calculated parallel that much than HoughLines can.