摘要： A palindrome is a nonempty string over some alphabet that reads the same forwardand backward. Examples of palindromes are all strings of length 1, civ 阅读全文

摘要： Recently i was doing some study on algorithms. A classic problem is to find the K largest(smallest) numbers from an array. I mainly studyed two method 阅读全文

摘要： Background. AOI software needs to use the OCR feature to recognize the texts on the chips. Because our vision software is based on OpenCV, so the firs 阅读全文

摘要： Matrix QR decomposition is very useful in least square fitting model. But there is no function available to do it in OpenCV directly. So i write a fun 阅读全文

摘要： In OpenCv, it only provide the function fitEllipse to fit Ellipse, but doesn't provide function to fit circle, so i read some paper, and write a funct 阅读全文

摘要： OpenCV has function matchTemplate to easily do the template matching. But its accuracy can only reach pixel level, to achieve subpixel accuracy, need 阅读全文

摘要： 这个转换在我们日常的编码中还是很有机会遇到的，这里贴出来和大家分享探讨。 阅读全文

摘要： Here is an example code to generate transparent shape on image. Need to pay attention can not use cv::Mat mask(mat) to create the mask image, because 阅读全文

摘要： Get from Stackoverflow. The details can easily understand from the below example. 阅读全文

摘要： The interpolate function is used to get intensity of a point which is not on exactly a pixel. The code is written in C++. Because it is template funct 阅读全文