I'm looking to count how many values in a row are identical. The idea is to be able to filter out respondents that have straightlined (ie answered all questions the same), for instance by filtering...

I'm working on OpenCV based project in python, and I have to calculate/extract and show visually the vanishing point from existing lines. My first task is to detect lines, that's very easy with Ca...

When a given image with lines is passed to OpenCV's HoughLine transform, it returns a list of rho and theta pairs, each pair defining an individual line. What is the order in which lines are listed...

So I have Image like this (source: de-viz.ru) I want to get something like this (I hevent drawn all lines I want but I hope you can get my idea) (source: narod.ru) I need some super fast a...

So I have an image like this: I want to get something like this (I haven't drawn all lines I want but I hope you can get my idea): I want to use SURF ( (Speeded Up Robust Features) is a robus...