adaptative threshold opencv

Question

hi all i use cvAdaptiveThreshold someone can explain me how work this function how determined the block_size and the param1 ?

IplImage *imgPicThres = cvCreateImage(cvSize(img_roi->width, img_roi->height), IPL_DEPTH_8U, 1);

cvAdaptiveThreshold(img_roi, imgPicThres,255,CV_ADAPTIVE_THRESH_MEAN_C, CV_THRESH_BINARY_INV,blocks_size,param1);

Answer 1

cvAdaptiveThreshold() is described in the documentation:

It transforms a grayscale image to binary image.