Demo to illustrate simple blob detection (sementation), measurement, and filtering. Requires the Image Processing Toolbox (IPT) because it demonstrates some functions supplied by that toolbox, plus it uses the "coins" demo image supplied with that to

基于OPENCV图像处理的BLOB的检测的例子-Examples BLOB detection of image processing based on OPENCV

For the detection of sign each frame is analysed. First the image is Converted into gray scale image and then threshold is performed. Then by using blob analysis portion of red part is extracted. Then this extracted part is compared with each t